EGO 56V ARC Lithium Battery Teardown

[@maddmikemu]

The green flashing LED is explained in the manual. It means that the battery is discharging to 30% charge level for storage. It is supposed to do this discharge after 30 days being off the charger, but yours is malfunctioning. My guess is that the timer chip on the BMS has failed, or a component that sets its timer interval or a short or failure on a nearby discrete component so that it begins this discharge cycle immediately. Another thing you could have found out would be to wait to see if the BMS stops the discharge at 30% as it is supposed to. If it drops below 30% charge level at about 50v pack voltage then the failure is also causing it to continue draining the cells to failure. However if you always keep it on the charger between uses it will continue to work like normal. If it does stop discharging at 30% then you could just continue to use it without risking over discharging and failure of the cells if you ever leave it off the charger, but it will only have 30% if not kept on the charger.

[@ThriftyToolShed]

As mentioned in the video it is definitely defective and it will go all the way to zero if not on the charger. I repaired this pack about a year ago. Link in description and at the end of this video.

[@stevestone5524]

Right on! Great tutorial! Electricity is the way of the future.

[@ThriftyToolShed]

Steve Stone, indeed, thanks for your comment!

[@propelproject]

Thank you for making these videos, now I really want to make my own 56v DIY battery backpack. It's such a simple system.

[@paulklapperich7520]

Do we know what the T and D terminals do? Some digital signal used by the charger, maybe? My snapper (rebranded greenworks) 48v battery also has 4 pins, but you only need - and + for DIY use cases.

[@mictrenor5953]

Any advice on getting the battery apart? I have my screws out but the shell/housing does not want to come apart?

[@ThriftyToolShed]

They can be a little stubborn, but if all screws are out then it will separate. The end caps first being very careful pulling on the board side end cap. After the end caps are off then the 2 halves will come apart.

[@jbriant29]

Can you give us the order of the colored wires in each connector? I ripped out some terminals when i tore off the lid

[@ThriftyToolShed]

I have a video on the 2.5ah pack BMS wiring. It was to help with a similar issue back then. It may differ some on different sizes and pack generations, but hopefully it helps. kzbin.info/www/bejne/iJe3e4J6pM1rh5Ysi=QhJ8d9pLiBBaY_CJ

[@vigibill]

What are you sticking that tape too while checking the cells? Looks like some type of plastic sheets.

[@jhlewis10]

Noob question here. Just broke down two batteries this am looking for reasons why they are not lasting. Took one of my 2.0's and tested each cell, range 4.08 to 4.10 and 57v total. Took apart the big 7.5 amp hr one and it looks a little more complicated to take apart. The total V out is 57v. If its 57v do I still have to test each individual one? Cells are Samsung INR18650-25R which is good they at least are labelled if I need to replace some. Great videos thanks.

[@ThriftyToolShed]

Man it hurts me to hear you have a bad 7.5AH those are really expensive. Hopefully it's under warranty? I have not had to opportunity to look inside of the 7.5 but sounds like your cells are fine though! Are you getting the full voltage at the + and - terminals of the pack? I did show in one video on a 4.0AH that the fuse had blown on the connector board? So the cells were like yours almost full chargered and at 57V but I did not have it at the battery terminals...

[@jhlewis10]

@@ThriftyToolShed yes 57v at the terminals. Out warranty I believe will check my records. I just know it used to cut the whole lawn but now will only last for half of it. Last summer we did have really long grass though with all the rain.

[@jhlewis10]

I have the 5 ah one also and 3 2ah ones.

[@ThriftyToolShed]

@@jhlewis10 ok, They are charging fine and work "ok" it's just capacity? Not lasting as long? What I usually do then is run a pack down as far as I can. If it stops and blinks red, I will even let it sit and run it in my blower etc. Until it cuts out again, I may do that several times and then after it's really pulled down low, you can check which cells individually( or group of cells in case of the 4.0 and higher packs) are the lowest voltage level, usually it's obvious which ones are pulling low, my experience is one cell or one group of cells is what is making the pack cut off to early! Hope it helps and best of luck!

[@jhlewis10]

@@ThriftyToolShed Yes just capacity. Ok I will get the kids mowing early to get the big battery drained and recheck the voltages.

[@zoemayne]

I wonder if moisture would be a problem with the ventilation they have.

[@ThriftyToolShed]

I think that's why it has so much potting on the electronics. I have still seen issues on the individual cell connections as well as the bms connectors with corrosion causing issues though. I have now repaired several of these packs and after the time to remove the potting, I am not putting it back so far. I just try to keep mine from getting damp if possible.

[@DrDennis]

What kills these batteries cold or heat? I’ve got two 2.5 ahr and looking how to take care of them the best since so pricey!! Should you ever run them completely dead or chg up before?

[@ThriftyToolShed]

In my experience overheating is one of the biggest killer of the cells. This is one reason I really like the additional step engineered in these batteries for cooling. The battery management system (BMS) if working correctly will not allow the battery to overheat or over discharge without shutting down. I personally still charge mine after modest use even if still showing above 25% but I feel it's just good practice.

[@subguy3020]

These batteries don't develop a memory, so there is no need to completely discharge them before recharging.

[@Lilmiket1000]

Yea all my li-ion powered tools will shut off before it allows you to completely discharge overheat or damage them.

[@MrPageyjim]

After owning and using EGO batteries for several years what are your thoughts on them?

[@ThriftyToolShed]

I really like the arc lithium design. One of the only ones to engineer the packs to help with cooling. The cooling, spacing and the phase changing sleeves are all vast improvements to me over the common tight brick design. I have seen lots of issues with the BMS unfortunately. To be fair since they are the only pack I have seen to actually monitor the temp of each cell, balance each cell and several other temperature monitoring. One on the board and 1on each pack half as well. So I guess they are pretty complex so maybe some BMS issues should not be a surprise. The 2 things going forward for me is if they will continue the good warranty replacement that they have been known for so far for me and also if the newer BMS design they have, hopefully it does fix alot of the past issues. My thoughts so far! I really have not seen any other platform that can truly compete with the pack design. I do hope more companies push to design better packs in the same manner. Competition is great!

[@MrPageyjim]

@@ThriftyToolShed Thanks for the great videos and quick and detailed response.

[@vxnova1]

Do you know what type of cells being used are they 18650

[@ThriftyToolShed]

It is hard to say for sure which cells are in the packs due to the unmarked cells but we know they are 2500mah due to the 2.5ah, 5ah etc. rating. I bought several bad packs from eBay over the last 4 years or so and tested and collected the good cells from some packs while that helped me repair many packs. We know they will be high current cells. We have had some comments from viewers on here saying the cells they thought their packs have..... (Jonathan Ridder) mentioned his had Sanyo UR18650NSX. (Ipissed) mentioned his are Samsung INR18650 with phase change sleeves made of paraffin wax/carbon graphite.

[@vxnova1]

@@ThriftyToolShed thank you

[@manborn]

@ThriftyToolShed , how do you determine a jump fix with another good known battery was not the answer rather than opening it first? Was it the endless blinking green light that gave it away?

[@fredjones4818]

is there a video on how to take the black cell trays apart that hold the individual cells on the 7.5 mah so i can replace 1 ? mine seem to be stuck onto the batteries. thx

[@ThriftyToolShed]

You will have to remove all cell spot welded tap connections to fully remove the black tray/cell carriage holder. Then it is screws holding the tray halves together. So on some of my videos I will show removing one cell and replacing, you would have to do them all for each pack you want to separate.

[@fredjones4818]

@@ThriftyToolShed thx for the quick reply. will a 100 watt soldering gun hot enuff? what size do you use

[@ThriftyToolShed]

@@fredjones4818 Yes, typically I use a 100/140w gun on the larger tabs etc. When taken a loose the spot welds, I just carefully pry with a small screwdriver and pop the tabs off.

[@07SATS]

where did you buy the screw driver bit? Do you have the link?

[@ThriftyToolShed]

I have a link of tool I like in most video descriptions. This is a couple examples.... amzn.to/3EEzwvt amzn.to/3FLlycA

[@sabianfirst]

Great video! Emphasis needed on REGISTER YOUR PRODUCT, EVERY TIME. WITH UPLOAD OF RECEIPT. Some companies require this for warranty reasons. If you spend more than 50 bucks for your component, no matter what it is, take 5 minutes to register it. Many people don’t take this step, even with $1000 washer/dryer (as example), believe they can just take it back to the store after 30 days have passed, and they are met with disappointment. Excellent view and insight into arc-lithium arrangement. Thanks!

[@ThriftyToolShed]

sabianfirst, Very true, thanks for your comment, also check out the video a week later I was able to repair the pack! kzbin.info/www/bejne/e3mTeIZmnrqtsK8

[@todtalk3912]

Also, we never really keep stuff, but snap a pic of ur receipt (or if its online, save it somewhere) take a pic of ur serial number and then you have proof in the future, in the event they claim you never registered it if u in fact did. Also, I'm sure other brands do this too. Ego, of you buy a mower with 2 batteries and a charger or a blower with batteries and charger, those items will all match up. I.e. it be 12345S for the mower and charger and the batteries will be 12345A 12345B so its pretty cool how well they even thought out the serial numbers. I was pretty impressed so far with everything. The mower is excellent quality. I truly don't believe the advantage to be not dealing with oil changes or tune ups as most lawn mowers will run for 10 years doing nothing but adding fuel, at least in my case they all have, n I usually buy cheaper ones that have a standard Briggs and straton motor. Anyway, the advantage is just simply having something quiet. Something anyone can use. Something you can store for long periods without much use and it will always work, like a snowblower or something. Eventually those little engines will need a full rebuild or replace when they start burning oil n then never run again. My point, is that I have a small property and having large gas items makes no sense. I still have my gas trimmer, but one day when it goes, I will replace it with an ego. I have had it for 4 years now and only use the pre mixed non ethanol fuel. If O mixed it myself id have gas that is 4 years old as i have probably only used a gallon or 2 total since buying it. This is when battery operated stuff excells. Also, when storing lipo batteries long term, they're not meant to be stored fully charged even though everyone does. Now, for regular use, fine. If its sitting for 3 months, the same way you get the battery is how it should be stored, with 2 bars max if u have the new ones. That will prolong the use tremendously.

[@ThriftyToolShed]

The EGO packs will self discharge if in storage with no use over 30 days. It's a built in feature to help with this issue of packs stored long term fully charged. It's unfortunate if you have the Nexus power station though and wish to have the packs fully charged and ready if needed. You will have to stay on top of it and charge them every so often to be ready.

[@ucdbnxt7318]

Mine wasn't charging and others had dropped theirs to get them to work. I wrapped mine several times with a rubber mallet and it works. Do you see ANYTHING that might jiggle loose to require a good whack to get it to charge again?? Thx.........

[@ThriftyToolShed]

No, I did not. I repaired this pack in the next video. it was a shorted transistor. Mine would charge even while blinking, but if not repaired it will pull down to zero volts because of the transistor.....

[@ThriftyToolShed]

The only issue I can think of that might be possible is if a loose solder connection or spot weld on the cells, could be bumped into making contact, you would think this issue would come and go though!

[@timm2845]

How can you check each battery individually when they were still hooked to one another for the series circuit

[@ThriftyToolShed]

In the next 56V EGO video I posted, I showed alot about the pack, testing and repaired it.

[@corneliusw09]

What's the exact bit you used to remove screws?

[@ThriftyToolShed]

T15 security torx bit. Similar to this set: amzn.to/3wpbsuX

[@johnnewman672]

How is the configuration

[@desotopete]

What can you say about the self discharge feature...I noticed after 30 days it would go into self discharge in order to protect itself. I noticed when the button started flashing. Since I didn't know what was going on I pressed the green button. That made it stop the self discharge process and it waited another thirty days to start the discharge all over again. There is not anything in the manual about this...at least that I found...Only that it will start a self discharge mode after 30 days. Anyway, I'm still figuring this out.

[@ThriftyToolShed]

Yes the manual is very vague and I believe it is several different versions of the manual and one that I downloaded to share with someone did not mention the Discharge at all. As far as I know the blinking green after 30 days in storage is the indication of the discharge down to 30%. I have not seen any other manufactures pack do this. Apparently Lithium ion cells do not like being stored fully charged and for longer life it is recommended not to store for long periods fully charged and I guess that is why most cells or packs we buy new are below 50% charged. I always thought the manufacturer was just being cheap, saving charge time and electricity, LOL. I really am not a fan of this and I wonder if the newer packs ( I call them Gen3) with the fuel gauge actually still has the feature? The 2 cons to this: People with Nexus power stations full of fully charged packs ready for a power outage do not want all packs to discharge to 30% before they use it. The other issue is the Gen2 boards like mine are bad about that transistor shorting out and it causes the pack to constantly be drain all the way to zero and ruins the pack. I don't think it helps as much as it hurts. So I am hoping the new packs don't have it, but I am unsure?

[@desotopete]

@@ThriftyToolShed Thanks for response. Just a note. The pack that I have that appears to have gone through a discharge cycle is a 2.5 AH EGO weed trimmer I bought new in spring 2019 that has the segmented circle fuel cell. Gen 3 maybe? After stopping the discharge twice by pressing the button...each 30 days apart...the third time I just let it do it's thing...So the button flashed red at ten second intervals, on ten seconds, off ten seconds...for about an hour before stopping. When I finally pressed the fuel gauge button again it was a two green bars.... Side note, I just bought the 16" chainsaw with 5.0AH battery in Dec 2021. I was a bit disappointed that it didn't come with segmented fuel button.

[@ThriftyToolShed]

Well that answers that. The new segmented (Gen3) do for sure have the discharge feature. Well dang. I know what you mean about the older style battery in the kit. I have seen alot of complaints about that, sometimes even the box shows the new style in the pictures of the tool etc. Seems they had alot of packs or at least parts for the old packs to keep on making them well after the new Gen3 were in production. A bit strange! I like the Gen2 ok, it's all I have, but I always wondered why from the very beginning with all the cuircutry on the BMS with 2 processors why the heck EGO did not put a descent fuel gauge on the suckers...

[@pratzert]

Hi. I noticed one of the commenters below had asked if you do repairs on these batteries (for a fee).Is it just a hobby and curiosity, or do you, in fact, perform repairs?It may be a decent side business for you considering what they charge for brand new batteries.Thanks!

[@TCPUDPATM]

I’m distracted by that bit holder and those bits! Lol Thanks for recording this tear down.

[@ThriftyToolShed]

Thanks for your comment, its been a while since this video. I also was able to repair this pack in the very next video!

[@romanykemp9042]

The "phase" material on the cells of one EGO pack I worked on was a paste at room temp - very smelly. Probably an earlier (perhaps later) change in design...Good video. Do you have any advise on how to pick a replacement cell (hi current like these) when you don't have an exact replacement? And don't have the specs?

[@ThriftyToolShed]

I keep lots of spare cells from almost new packs parted out as well as other cells tested very well for capacity. I just about always have what I need for spares. I usually do not recommend cells because so many times it's hard to verify that they are not fake cells. The main thing to make sure is that the seller is truly selling genuine cells. I have had great luck using 18650batteeystore.com in the past. Some have mentioned that the cells in the 2.5, 5.0 and 7.5 AH units may be Samsung INR18650-25R. The cells are rated at up to 20A discharge. Sanyo UR18650RX cells were found in a 2.0AH and 4.0 AHpacks. These cells are also rated at up to 20A. I share some of this in this video if you find it helpful. kzbin.info/www/bejne/nGq2gIOMetaaodk

[@OKBAOK]

If under warranty Ego will send you a new battery. They know the problem in this batteries. They will let you keep the bad one. That's what they did to me got the new one. The new battery is going strong no problem holds a good charge no more issues..

[@ThriftyToolShed]

Right. That is why I stated that in the video and I also repaired the pack they let me keep on the next video which is in the video description as well!

[@zoemayne]

I've heard that these batteries had a fan inside of them. Is this true for some models?

[@ThriftyToolShed]

No, not the pack itself. The charger has a fan to circulate the air through the arc designed case and the fast charger has 2 fans in it.

[@donsutherland2143]

My light is blinking as well...What should I do and could this be dangerous?

[@ThriftyToolShed]

You can call EGO as I mentioned at the end of the video, you can then recycle it. I also showed repair of this pack in the next video. As far as danger, it is always a risk with that much energy in any form of storage, however, I have not had any issues with any EGO pack as far as being dangerous, catching on fire etc. The blinking green is usually just slowly discharging.

[@rickyparacuelles2608]

I am looking for the wiring diagram for the charger mine has power going into the charger but it does not show power going to the battery

[@ThriftyToolShed]

Ricky Paracuelles, I wish we could get our hands on all of EGO schematics but they would most likely never let those get released. I have not had to troubleshoot mine at this time. Are you sure it’s the charger by chance do you have more than 1 battery to test it with?

[@AndreyBanyuk]

The unit comes with a 5 yr warranty, why break things when you can get it replaced?

[@BrickBike]

Andrey Banyuk I had one fail and they replaced it under warranty. They send you a new one and don't ask for the other one back so I have one of these in the garage I'd like to tinker with. I'm sure it's a simple problem.

[@joefro9473]

I've had the exact same thing happen to mine ,luckily it was under warranty and they are sending a new one out ,hopefully no more problems with it .

[@ThePhosee]

how is this battery 56V??? Even if you assume each cell is 3.7V then 14 cells connected give you 51.8V

[@ThriftyToolShed]

Because 4V X 14 = 56. Most packs use the MAX or close to max charge level and some like the first ECHO 58V used the absolute max of 14 cells to call it 58V and really it's the same as any 14S pack. The newer ECHO line is now 56V oddly enough... Some manufacturers use the nominal 3.7V per cell but very few today...

[@bsn2fnp]

Where did you get the bits in the blue holder?

[@ThriftyToolShed]

ebay, the long bits are really nice! rover.ebay.com/rover/1/711-53200-19255-0/1?icep_id=114&ipn=icep&toolid=20004&campid=5338325412&mpre=https%3A%2F%2Fwww.ebay.com%2Fitm%2FExtra-Long-6-Security-Bit-32pc-Set-Tamper-Proof-Hex-Torx-Star-Pozi-Tri-Wing%2F111824191857%3F_trkparms%3Daid%253D111001%2526algo%253DREC.SEED%2526ao%253D1%2526asc%253D20160908105057%2526meid%253D2ae5d0d969a94c0a8c1c25a93e236b6c%2526pid%253D100675%2526rk%253D1%2526rkt%253D15%2526mehot%253Dpp%2526sd%253D111824191857%2526itm%253D111824191857%26_trksid%3Dp2481888.c100675.m4236%26_trkparms%3Dpageci%253A0ad76450-6c67-11e9-b583-74dbd18032b9%257Cparentrq%253A75aead2e16a0ac1d207c3a27fffb843b%257Ciid%253A1

[@gerryc7670]

@@ThriftyToolShed Thanks for sure will get a set and thanks again

[@truthprevails6251]

If you hold the button down for a long time you are making the battery electronics think there is a bad cell so the led flashing makes the battery go dead so it cannot be recharged so you send it in for warranty or recycle it.

[@PresentedByBailey]

what size security bit is used on the battery?

[@ThriftyToolShed]

T15 security

[@Sdelgado0267]

I have the same issue with one of my battery packs. it is a 56v 2.5 Ah and I will call the company tomorrow to get a replacement. these batteries are really expensive.

[@ThriftyToolShed]

Steven Delgado,If EGO still let's you keep the old battery to recycle it, keep this repair video in mind! kzbin.info/www/bejne/e3mTeIZmnrqtsK8

[@Sdelgado0267]

@@ThriftyToolShed Today is my lucky day! called EGO and they were very helpful, I did not have a receipt for the purchased of the unit. They asked me to go to Home Depot where I bought the unit and get a copy of the receipt. HD could not help with providing the copy but, the store associate were willing to replace the battery at no cost to me. So, HD did not have the battery in stock then, the store associate tells me, look bring your old trimmer (Which was 1 1/2 yrs old) and I will do and even exchange. What???? this new unit has an auto load cutting line. It is pretty slik. Cudos for Home Depot that did above and beyond to keep a customer Happy.

[@stilesevans1]

Great video 👍. Like you say the battery construction is clean, rugged, and well thought out. This is one of the power units I am considering.for portable power. Can't figure out why people are complaining when there is a three year, no argument warranty. Then they say you can just recycle the battery. Use the cells in your flashlights etc. Pretty generous. Who makes that blue and black powered stick screwdriver.

[@ThriftyToolShed]

Thanks for your comment! It's a hammerhead like this one: www.ebay.com/itm/1-NEW-Hammerhead-HCSD040-02-4-Volt-Rechargeable-Screwdriver-Circuit-Sensor-/292726370048

[@raydioz]

Howdy... I don't own a EGO but I was thinking of buying just the skin so I can use my many 7S lipo batteries. So 7s + 7s in series = 49v-58v. The issue is the 3rd and 4th pin and what they do. I'm happy adding a thermistor but I need to know the resistance... any chance you can enlighten me? I'm sure just adding + and - aint gona work, so what do I have to do? I can see the original pack is using 14x 18650. Thanks.

[@stoddern]

I've been trying to find what these 170377 really are, they look a little bigger than 18650's to me

[@maukaman]

I’m wondering the same. Ever figure out those other two pins?

[@Hundert1]

Excellent work! I have EGO blowers and am pretty much very satisfied. I just ordered their cs1800 chainsaw and am so looking forward to using it. I have their small, medium and large amp/hr batteries. I'm trying to decide which of their rapid chargers to get because they very soon will release a dual port rapid charger which is 30$ dollars less than purchasing two single port rapid chargers at 100$ a piece. If they are otherwise identical it maybe wiser to spend the extra 30$ dollars for the two because then they are functional separately away from each other. I'd like more of their batteries except they're so darn expensive. ENJOY!

[@ThriftyToolShed]

That is the best way to get batteries for sure. I bought a 16" chainsaw a couple of years ago and did a video review. One thing I mentioned was that the $299 deal was a awesome deal because it came with 5ah pack as well and the battery alone retails for $199 and I believe the tool only saw was $219 or so. The prices have gone up since then. I still love the string trimmer, blower, hedge trimmers, edger and chainsaw. I also have the mower and it is getting really close to keeping up with gas, but not quite. I do have the older push only, though. It still does the job, but is a little bit weak. The one thing that most likey get much better the longer you can hold out, will be the mower.

[@Hundert1]

@@ThriftyToolShed you mean the EGO mower needs improvements and we should wait until it get better? If they have a 22 inch mower I may get it soon because my old Toro gas mower wasn't easy to start yesterday. I'm thinking the EGO mower that's not self propelled would be more powerful at cutting thick tall grass because all the power goes to the cutting blade, but I could be mistaken. Maybe the self propelled mower just won't cut for as long a time as the mower we must push ourselves.

[@ThriftyToolShed]

I would think the latter. It will reduce battery life a little. I would think the power would still be about the same for cutting. I don't have one to say for sure though!

[@Hundert1]

@@ThriftyToolShed yep, makes sense to me too. If you can please try cross reference the bar and chain specs so we all can get much cheaper replacement ones on Amazon. For example on the EGO CS1800 I think any 18" chain, 62 link .050 gauge, 3/8 inch pitch will work fine. I called Oregon (the company EGO uses for their bars and chains) and the tech lady said any single rivet, 7 sprocket 18" bar with last digits of item # being A041 should work properly. The last four digits describe the bar end design that attaches the bar to the saw. Have a look on Amazon at the UpStart Components bar and chain products,sold from Certified Battery in Canada. I emailed the seller Certified Battery and they couldn't tell me which of their bars and chains would fit the EGO chainsaws. I'm hoping we can get a good EGO CHAT FORUM going somehow. Maybe we can get something going so we can find or make our own EGO aftermarket batteries too!

[@ThriftyToolShed]

@@Hundert1 The 16" actually gives the oregon part number for the bar in the EGO manual which I like. I do believe I mention that back in my review. I have tried hard to learn the EGO packs and I have a video about the D-terminal that the tool and pack communicates with and how we need to understand more about it to build our own pack. I have taken it as far as I can at this point. I am on the Ego power powered products Facebook group. It is pretty good group. I was wanting to create a group or blog and then found these guys.

[@davidpetrusewicz8172]

How much $$ to make the mold with a 4-D printer

[@ThriftyToolShed]

I don't understand the question?

[@davidpetrusewicz8172]

Thrifty Tool Shed sorry I was saying if someone had a 3D printer made plastic parts and and Cir board and battery cell buying separate how much do you think it may cost then buying a battery from store 163.00 for a 2.5 amp battery could it be cheaper

[@ThriftyToolShed]

@@davidpetrusewicz8172 I really don't think so. Just due to the cost of the 14 2500mah cells in the 2.5ah pack or the 28 in the 5.0ah pack since they are premium cells. Genuine cells of this grade would be maybe $8-10 each. Of course we have another issue as well. If you wish to use it on the EGO tools the BMS must talk to the tool trough the D-terminal (as mentioned in another video about the D-terminal). So that has been a challenge to figure out and would not matter if simply wanting a 56V pack for other projects such as a e-bike etc. I have actually bought many of these packs as parts or non working just to get the cells from them because they are expensive. That is how I get my spares, tested used cells from bad packs that have great capacity. Always good to think out of the box as you have here for sure!

[@davidpetrusewicz8172]

Thrifty Tool Shed I think I’m over my head on this looking at your response thank you for answering my question.

[@mashedpotatoes5323]

I got one of these battery packs for free, are these 18560 cells? I haven't opened my yet because I don't have a hex bit thing with a hole in the middle, but I cut a little hole in the top of the pack and the cells look bigger than the 18650's , is there something covering the cells??

[@ThriftyToolShed]

Yes they are18650 type cells and they are covered with a phase changing sleeve. I mentioned these in the next video when I repaired the pack! Yes you will need the security bit to get in it easily.

[@blackz06]

@@ThriftyToolShed so, there are 14 cells total? That's only 51.8v at the nominal rating of 3.7v per cell. Interesting!

[@ThriftyToolShed]

@@blackz06 , They charge to around 4.1 to 4.2 volts for maximum capacity. Oddly enough Echo brand calls theirs 58v with 14s also so they are stretching it a little!

[@blackz06]

@@ThriftyToolShed yes... they are both lying a little bit for marketing purposes!

[@zigatron]

Do you repair them? how much do you charge?

[@jeffshort6766]

Your tool bench is way to organized. No way any work can get done there! Lol

[@johnnewman672]

Right

[@stephenpeck10]

I've got a battery where some of the connections have been pushed out of the 10-pin header. there are two black connections on the far left (I'll call these position 1 & 2) and green & black in the far right (position 9 & 10). does anyone know the correct order for the pins so I can put them back in place? Thank you.

[@ThriftyToolShed]

Stephen Peck, BLK,BLK,nc,brn,wht,yel,Blu,Rd,grn,BLK.

[@stephenpeck10]

Thrifty Tool Shed awesome thank you sir!

[@stephenpeck10]

Hoping this fixes it, if not on to cell repair!

[@rinzl3rs349]

Same issue. The battery becomes stuck in self discharge and needs to be reset. The only solution I have found so far is to pull all the connections and reseat them

[@ThriftyToolShed]

Kenneth Oslund, Glad to know yours is reset. I have not come accross any that would "reset" the only fix has been like the one in this video. kzbin.info/www/bejne/e3mTeIZmnrqtsK8

[@edridenour3974]

where can we find the replacement cells

[@ThriftyToolShed]

I have used spares so far from a lot I bought on eBay of defective packs about 2 years ago. We have had several comments from viewers that state they found which battery is in the ones they have..... (Jonathan Ridder) mentioned his had Sanyo UR18650NSX. (Ipissed)mentioned his are Samsung INR18650 with phase change sleeves made of paraffin wax/carbon graphite.

[@azalru]

I enjoyed and learned a bit, really cool teardown and tools.

[@ThriftyToolShed]

azalru , Thanks for your comment!

[@PresentedByBailey]

thanks!

[@jmm1000]

any more progress or update on this issue?

[@ThriftyToolShed]

jmm1000 , I have the battery apart on my bench again at this time. I am hoping to do a follow up video. I am troubleshooting the circuit now after digging all the silicone off the board. EGO Sent my replacement quickly so as I have time I will look into this circuit board more.

[@ThriftyToolShed]

jmm1000, I have received the components needed for this battery repair and will be finishing the edits and hopefully get the video uploaded today. It is fixed!

[@jmm1000]

what king of heat absorbing wrap will you use on the cells? what kind of cells / did you have to replace all at once to match them, or just the weak ones? thanks!

[@ThriftyToolShed]

HI, I have uploaded the video now. I am sorry i do not know the info on the cells. I was sure that I would have to go that deep in the cells the way they discharged. But even though my cells did get pulled down below a safe level for them (due to the bad component) the batteries balanced out and held a charge very well. After several tests all my batteries are holding strong.I will be surprised if eventually i do not have to get into the cells as deep as you have mentioned above. If i do have to take my pack back apart i will let you know.

[@DragonsREpic]

Thrifty Tool Shed I want an update to what happens what was wrong with it???

[@supakamario]

Y not use the 3 yr warranty

[@ThriftyToolShed]

Y not watch the video!

[@supakamario]

@@ThriftyToolShed did watch

[@ThriftyToolShed]

15:30 I also repaired this pack in the next video!

[@mathiacithu]

Name of the screw driver please

[@ThriftyToolShed]

I did a video on these. Link also on description. kzbin.info/www/bejne/nJu0qWCKgseVZ80

[@imaudm]

They are torx security bit, has a tiny bump in the center

[@DylanFkinGuenther]

Just got into the ego gear, great vid I'm sure ill be making use of it in no time

[@toolshopguy2080]

Finally I found someone that has had the same issue with there battery. Thanks for the upload. Nice to see how podded everything is tho.

[@doubleganger2]

potted

[@markwetty2269]

I like the EGO equipment and use the batteries frequently, every battery i have has started blinking within warranty at some point. Customer service although is excellent.

[@tomkatt2321]

Mark Wetty I also had this same issue after 1 year. I believe the batteries are fine but the charge controller has failed. As you mentioned, customer support was truly excellent and I got a replacement battery in less than a week. I notice the replacement battery has a different controller design... I suspect the blinking issue was prevalent in the earlier version and hopefully they have corrected it. So far so good - I’m going into year 2 on the replacement battery with no issues.

[@iJacker]

@@tomkatt2321 wow so the cells are still good? I found one in the recycle score!

[@davidg5991]

It's normal behaviour for the LED to flash green after 30 days of not being charged. It's in the owner's manual. It indicates the battery is self discharging down to 30% capacity to prolong the battery's life.

[@rcrick00]

Hey good video. I have one to tare down myself. On year old. Got a warranty replacement coming also. I plan on keeping the dud for spare parts. Maybe use some of the cells for projects. If you plan on doing the same. I would take it back apart and disconnect the cells as not to bring them completely down. Good video . Thanks !

[@ThriftyToolShed]

In the very next video I shared the repair of this pack. I have shared many videos on the packs over the last 5 years since this first video. Thanks for sharing.

[@arnoldrimmer8008]

Try cutting the DC to the front panel momentarily rebooting it.

[@ThriftyToolShed]

You can watch the repair video that shows the repair, so just unplugging the BMS will not solve the issue. If your battery is faulty like this one unplugging the board is necessary to stop pulling the voltage down until you can repair it. Thanks for your comment!

[@slingshot6722]

@@ThriftyToolShed will it charge the batter slow and safe with the BMS unplugged?

[@ThriftyToolShed]

@@slingshot6722, It will not, fortunately I was able to repair this pack, and I shared that video as well. Thanks for your comment!

[@slingshot6722]

@@ThriftyToolShed My sister has the problem. I dont know if its the light like yours or not. But her first battery lasted a year and a half now this one only lasted 9 months. Hers is black and decker

[@windsurfed1]

Great video thanks for breaking that battery down. I always wondered what it look like inside. I have two batteries.

[@oliverstoys8411]

Nice video, I have issue with my battery charger, it started releasing smoke( probably one capacitor leaking) after 15 mins of charging, and I do have a spare charger, but when I plug it in no power, even the led red and green did not blink at all. I am not sure I have a bad batch of charger, I will call ego about it and hope they will replace both charger, one six month old and the new one, I just bought it 2 months ago.

[@ThriftyToolShed]

Ego should replace both for sure. I have not had any issues with a charger yet. Just curious, Do you have the basic charger or the rapid charger?

[@oliverstoys8411]

@@ThriftyToolShed I have the basic charger that is included with the blower and grass trimmer.

[@ThriftyToolShed]

@@oliverstoys8411, Thanks for sharing, that's the same one I have. Very strange! Hopefully EGO will make it right!

[@oliverstoys8411]

Thrifty Tool Shed thanks for sharing, have a great day👍🏻

[@christiangibson1120]

Thnx, great clip! But I would like to have seen more about the connections and wiring - and it would have been top if you had opened the sealed electronics housing to take a look at what is inside, what is does, how it works and.... why the LED is flashing! (My guess is that it is some sort of controller which monitors the charging and discharging of individual cells and somehow controls the charging and discharging to ensure that the cells are yoked up to each other and perform as a team???)

[@ThriftyToolShed]

christian gibson , check out my video that shows it repaired! kzbin.info/www/bejne/e3mTeIZmnrqtsK8 Thanks for your comment!

[@jeremylongton2879]

Hi mate do you know if I can buy an ego 56v blower with battery in the USA and use it in Australia? Is there any issues with charging voltage? I have other ego products and charger with Australian plug. Thanks great video 👍

[@ThriftyToolShed]

Jeremy Longton , I have not been into the charger yet at all. So all I can say at this point is the rating on the charger is only for 120V 60HZ. I would not be suprised if it is easy conversion since surely they sell the products there with minimal changes but I just do not know yet.

[@ThriftyToolShed]

Jeremy Longton, If you were asking if the charger you have there would charge the 56v battery from here, I dont see why it would matter. But I do not have both to be sure though.

[@willgeorge5644]

egopowerplus.com.au

[@brianmellinger7981]

Nice video love looking what’s inside thank you🔋🔋

[@TheManChise]

Nice job taking that bad boy part...you're brave those suckers cost 100 bucks..

[@ThriftyToolShed]

TheManChise, in the video after this one I repaired this pack and saved that $100. Thanks for your comment.

[@subguy3020]

Why brave? It's defective. And it's under warranty.

[@streak2645]

Battery only six months old and ego wouldn't replace it? O better get more than six months out of it.

[@ThriftyToolShed]

Sorry to see that! They have been really good at replacing in the past. I have not had another failure since I had to repair this one and that's good, I guess it was some faulty components in the mix, seems to be hit or miss. I had one fail out of 6 batteries.

[@streak2645]

@@ThriftyToolShed I may have worded this wrong. I just purchased it a month ago and i thought I heard you say yours only lasted six months. I was just saying I hope I get more than six months out of it. And, I would hope that they replace it since my tool has five year warranty. Thanks for the reply. Love your vids.

[@ThriftyToolShed]

@@streak2645, Ok, I am glad. Yeah I have had good luck with all the others, lots of others in the community having similar issues I guess it is hit or miss! Thanks for your comment!

[@jboutdoors2123]

I had one battery last 2 charges and the other one is doing the green light death flash after about 3 summers of use. Not sure I'm going to continue buying the EGO products. I do use mine on commercial property so they get used more than say someones small lake cabin. I really wanted to love them, the trimmer and blower have lots of power but the operating cost has so far greatly outweighed my Stihl gas equipment I had in the past.

[@ThriftyToolShed]

@@jboutdoors2123, Sorry to hear that. I have only had the one failure out of six batteries now and I have been using the ego products for over 2 years. I do love the power and I hope the issues with the packs are resolved. I can appreciate the efforts in the design especially the cooling, but the electronics have to be solid as well. I do love the convenience of the packs without compromise on power. I personally will not be going back to gas.

[@ATP360]

You pulled the ends right off! I can’t get mine off.

[@ThriftyToolShed]

Some are stuck very well. Just pry very easily on the end with the indicator/fuel gauge. If you pull too hard and pull out too far you can pull the BMS wiring from the connectors.

[@ATP360]

@@ThriftyToolShed Mine is slightly different color. Mostly black with smaller areas of green. The ends seem rubberized, not a hard plastic.

[@ThriftyToolShed]

All the EGO packs I have worked on have rubberized coverings. I have not worked on the newest 3rd Gen packs with the fuel gauge to say how different the end caps may be. I know the aftermarket solid black batteries from China don't have the rubberized covering.

[@ATP360]

@@ThriftyToolShed ok thanks for the reply. Yours came off so easy , I thought maybe mine were different.

[@SolarizeYourLife]

My 2.5 ah battery lasted a whole year sadly...

[@tranebullard7588]

They have a 3 year warranty. Just call them.

[@kookamunga4714]

All the cells are connected so they would show the same voltage. you would have to measure each cell separately under load. measure the voltage drop across a resister.

[@ThriftyToolShed]

Kooka Munga , No sir. They are in series not parallel. You can most certainly check individual cells, that's how the bms monitors the cells. To learn more about how it works check out the repair video of this same pack the next week. I have been using this pack ever since repair last year. kzbin.info/www/bejne/e3mTeIZmnrqtsK8

[@ZENO357]

This channel is a bit like BOLTR but without the humor, bad language and complete disrespect for the tools he's working on. He also sounds like he must be from near where I live (NC). Good video - thanks.

[@ThriftyToolShed]

Not very far, I live in Augusta, Georgia. We do love the NC area and visit there often. We visited Biltmore estates in Asheville last year and when my son was still young we loved going to the Fun Depot up there as well! Thanks for your comments!

[@pierretremblay3897]

Battery Status IndicatorBattery Status Indicator The Pushbutton / LED indicator on one end of the battery is used to determine battery status. Depressing it momentarily activates the display: Green - OK, 15% more more charge Flashing Green - Battery has not been used for about 30 days and is in the process of discharging to storage level (30-50%) Red - Charge level is low, prepare to stop using this battery Flashing Red - Charge level is very low, stop using and recharge Orange - Battery is overheated (70C), allow it to cool Flashing Orange - Battery has been overloaded, allow to cool and reduce load The Pushbutton / LED indicator on one end of the battery is used to determine battery status. Depressing it momentarily activates the display: Green - OK, 15% more more charge Flashing Green - Battery has not been used for about 30 days and is in the process of discharging to storage level (30-50%) Red - Charge level is low, prepare to stop using this battery Flashing Red - Charge level is very low, stop using and recharge Orange - Battery is overheated (70C), allow it to cool Flashing Orange - Battery has been overloaded, allow to cool and reduce load

[@ThriftyToolShed]

This battery had a shorted transisitor on the BMS which I repaired a couple years ago in the very next video. Thanks for your comment

[@ReverbAndBeer]

Why would a company have a blinking red light labeled "DEFECTIVE" built in to their product? How many defective products are they selling? I agree, Customer Service was excellent, but it was like they were expecting my call. "Hi, I've got a blinking red light". "OK. We will send you a new battery. You should receive it in 5 business days". It sure sounds like they know that a certain percentage of their batteries are defective, and it's cheaper to let their customers discover the defective ones rather than find them themselves. Of course it's Fall and I gave away my corded blower. I like rakes better, anyway.

[@josilem1234]

Very nice 👍

[@user-vz2ei3sb7r]

The battery is in a maintenance mode if you were to call ego they’ll give you a free replacement the battery is not fixable.

[@ThriftyToolShed]

john miller, That was mentioned in the video. I also did repair it in the following video the next week.kzbin.info/www/bejne/e3mTeIZmnrqtsK8

[@natelalonde8117]

You can put a new BMS on it and use it for an e-bike scooter that's what I use mine for

[@ThriftyToolShed]

That's another great way to repurpose these for sure! In the next video I repaired this pack and got it back in my tools working! Thanks for your comment!

[@natelalonde8117]

Ask them to send u a new bms

[@ThriftyToolShed]

As mentioned in the end, they sent me a new pack. In the next video I repaired the BMS in this one!

[@cp1699]

not sure what was learned here

[@ThriftyToolShed]

cp1699, try this one. kzbin.info/www/bejne/e3mTeIZmnrqtsK8

[@truthprevails6251]

cp1699 you’re right we learned nothing

[@ChuckD59]

@@truthprevails6251- Your loss then. Not mine, I thought it was very worthwhile.

[@MP-zf7kg]

A little humor for me: You're meticulous and everything on your bench is in its place.....then you pull out a plastic bin and just plop!! the screws in it. I am betting, though, that when it really matters, you sort out the screws and label them (I am NOT meticulous, but when I'm not being dumb, I make a fastener-map on a sheet of paper). Good video, I enjoyed it.

[@HelamanGile]

I want to hack one of these and use them with a scooter

[@ThriftyToolShed]

A lot of people have done that very same thing!

[@HelamanGile]

@@ThriftyToolShed so it works?

[@ThriftyToolShed]

@@HelamanGile Apparently it works well on some. Lots of comments in my EGO videos are about the projects they are working on. Many of these projects are scooters and e-bikes. You can get the full 56V out if the + and - terminals, however, you have to make sure you don't pull the pack down to far. It has communication with the tools to shut down if over temp or undervoltage. So when bypassing that you have to monitor or add you own BMS on the scooter.

[@WV591]

should have cut the wires to save the batteries.. that's the problem with electric trimmers. will cost as much as new trimmer replacing battery. so overpriced.

[@ThriftyToolShed]

I ended up repairing this pack in a later video! still going strong and the new pack has had no issues! I will not ever go back to mixing the gas and oil myself. Now even my chainsaw is a 16" EGO I love it but it may not be for everyone!

[@WV591]

@@ThriftyToolShed ..I know what you mean I have two completely torn apart GAS trimmers I'm about to trash and one that I replace or rebuild carb on it every time I don't use it for couple weeks and then there's problem finding ethanol free gas in Houston. I have had it with gas myself but these electric one's are way overpriced and out of most people's budget. I guess it's all matter of priority.although was surprised to hear 3 year warranty on the battery. that's very good.I also like the fact that your electric has flat edge trimmer and not stupid curve shaft that gas trimmer have and are way unbalanced.

[@9028336miltonchoto]

EGO batteries are a total failure !

[@ThriftyToolShed]

I definitely believe they have had issues and so far since I have repaired several it seems to be more faulty components from there supplier. As I had the transistor short on some batteries and once I replaced it, it has not failed since, and it's now been years later. I do really like the idea of the cooling they attempt to design in the packs because so many manufacturers now make the packs as tight and compact but they are killing the cells by overheating them. I still use and enjoy the EGO products and will continue to do so, sorry your experience has not been good with them. I can understand the frustration of failed packs for sure. I was on the fence about the time of this video and I guess once they were good about sending a replacement right out and then told me to keep and recycle the old one and I was able to repair it, I guess I automatically became a fan.

[@leochen4891]

Open the cover is not teardown...

[@ThriftyToolShed]

Lei Chen, Does this one go far enough for you? kzbin.info/www/bejne/e3mTeIZmnrqtsK8

[@billfischer1552]

Less than 6 months? well thanks for wrecking your warranty so I dont have to

[@ThriftyToolShed]

At the end of the video I share that EGO had sent out a new one under warranty and I was able to keep this one and recycle it. I was able to repair this BMS board in the next video.

[@maytim007]

Ego battery is a scam. All of my 4 packs died the same day. All on 4 different chargers. Puzzled me a while. I find out that the TI battery management chips inside the pack not making charge after certain usage which is roughly about when the warranty running out. Almost $1000 worth of batteries are PoS now. PLEASE DON'T buy EGO

[@superspeeder]

Baloney

[@maddeusdoggeus1]

Tim May you did something wrong man. Or Something wrong was done to the batteries that you don't know about.The Chances you got 4 bad batteries is why too high. I have 3 for over 3 years no problens. There is some type of commonality that you have missed.

[@Leon-Servant-of-Christ]

No different than any other lithium ion battery setup, total junk!

[@truthprevails6251]

My ego mower still works perfectly and I have had it for 3 years

[@tjncooke]

Did you see the follow-up video? Much deeper dive than I've ever seen for this battery.

[@jmorgan3993]

My 6 year old Tesla's still going strong.

[@vigibill]

What are you sticking that tape too while checking the cells? Looks like some type of plastic sheets.

[@ThriftyToolShed]

It's actually diffuser layers from an old monitor with a cracked screen. I always repurpose items I can before junking it. They have always come in handy. Another larger one is what is covering my work area below the camera in most of my videos. I have always like being thrifty as possible!