20KWh DIY RackMount Backup Battery for Half price

[@ThanosSustainable]

Excellent project. Only drawback is that the scooter batteries are li-ion, which are quite more dangerous compared to the LFP cells the Jakiper batteries use.

[@ThanosSustainable]

@@AllAroundTube50 I too am on li-ions for over 3 years. DIY power wall. But I keep them in the cellar, along with some fine wine, so they behave! 😃

[@niktak1114]

Plus the cycle life is about 1/6th that of LFP so it's about 3x as expensive per cycle

[@ThanosSustainable]

@@niktak1114 li-ions used in a storage project will last a looooong time. Over 2000 cycles for sure.

[@niktak1114]

@@ThanosSustainable Maybe if you only use a DOD of 70-80%. At that DOD, LFP will have 7000+ cycles.

[@niktak1114]

@@AllAroundTube50 $6-6.5k. Or about $3.2k per 14.3kWh for seplos kits.

[@diskdrive123]

Points of concern: 1. The front mount lug connector (thru-hole) is only a small air gap between case. Air gaps quickly disappear on flexible frames and tensioned lugs, not counting accidental damage to either, there should be physical isolation there. 2. PCB should not be used for anything structural beyond its own weight. You put high gauge wires on that and you will be putting torque across the PCB, over time it will flex, crack, and likely tear at some point. 3. I don't know the schematic or spec of batteries on that but I have a general dislike of direct connect systems like that. Without a BMS or monitoring like the other one, it almost certainly will not last as long.

[@jehugarcia]

No air gap, there’s an isolator, and all these have a built in bms

[@jehugarcia]

No air gap, there’s an isolator, and all these have a built in bms

[@diskdrive123]

​@@jehugarcia Not the pass thru bolt isolation, the PCB face to case gap. Long story short, I can't for the life of me see how that much power, with that much exposed copper, while on that type of support structure, does not violate some sort of safety regulation.

[@justkiddin1980]

These are li-ion also…

[@Syncere20]

​@@diskdrive123 Are you a fire inspector.

[@deronthomas7904]

I would probably drill holes in the back and all along the back install external case fans. This will help keep the batteries from overheating.

[@ddub9968]

I would like to see this build as a LiFePo4 48v with the same features. That would be a much better comparison for off the shelf vs diy. Other than that, great video.

[@thekingoftheworld9553]

LiFePo4 is wayyy safer. I wouldn't feel comfortable with anything else in my home.

[@ddub9968]

@@thekingoftheworld9553 Absolutely agree!

[@benconverse6158]

Also, 36v inverters are more uncommon. 24 and 48v seem to be the standard.

[@xLopez210x]

I’m waiting for a solid 48v build for sure.

[@JeremyWhittakerAZ]

You should do a video on how to discharge batteries during peak demand hours. A big problem in Arizona is the power providers hit us with energy costs that are like 100x during "peak demand hours". We need a solution to charge during cheap hours and then offset demand during peak hours.

[@jehugarcia]

Super easy to do, I have a project in mind just for that in the works

[@JeremyWhittakerAZ]

@@jehugarcia nice! Need something that can read the wattage being consumed so it can only discharge to offset back to zero. If you solved this problem it would solve a huge headache for us on SRP in Arizona. They are basically price gouging solar customers during certain hours when the sun is down and we can't generate enough solar to offset our usage. For example, you could have a pv system large enough to offset 110% of your energy usage and you would still have a $100+ monthly bill. That to me is legalized robbery

[@robertsmith2956]

of course if everyone does it, then that becomes the peak hours.

[@DavidHalko]

@@robertsmith2956 - “if everyone does it” then there will be no peak hours and it will just be close to flat rate all the time

[@daveyd0071]

buy solar panels and tell the power man to fuck-off with their rate hikes. Been off-grid since 2014 and have NOT paid the power man a single dime.

[@peterxyz3541]

THIS is what I want: a cheap system I can add to as I go! Thanks

[@scottc346]

Just bought 15kwh from Signature Solar for $4700. 10 year warranty. I'll take the warranty and support.

[@thecatat7]

Thanks for your upload, I have always liked your "cowboy/no fills" apporach to DIY - it resonates with me.

[@russell7489]

Brilliant I'd keep any whole house or otherwise substantial energy storage out in the garage, even if had to build and heat an enclosure just to be safe. It's a lot of energy and that's always a fire problem. I've just bought a pre made Battery Queen 4.8 kwh at 25 cents a watt, and a EG4 3000 watt inverter, transfer switch, charger to play with before committing to 20kw system and probably PV to power it up (and otherwise power up low load emergency circuits in house. An emergency power system that requires no maint, no fuel, AND pays back a little every year. WOW

[@cameronbarnes5882]

5:45 best template dismount ever, almost fell off my chair 💺 🙃

[@grindychum]

Very cool. Unfortuantly I have already bought my scooter batterys awhile ago when we would clip off the white connector and replace with a xt30 to wake up the bms.

[@CherokezPittman]

Great video! I really value having a reliable backup power solution at home, especially when I'm out camping or spending quality time with my family. The Segway Portable PowerStation Cube Series seems like the perfect choice with its massive capacity, fast recharging, and versatile sockets. Plus, its waterproof technology gives me peace of mind during outdoor adventures. Definitely considering getting one for myself!

[@ARLGD]

Thank you for sharing your thoughts on the video! I completely agree with you about the importance of having a reliable backup power solution, especially during outdoor adventures and quality family time. The Segway Portable PowerStation Cube Series sounds like a fantastic choice with its massive capacity, fast recharging, and versatile sockets. The waterproof technology is definitely a game-changer for outdoor enthusiasts like us. I highly recommend considering getting one for yourself!

[@RealSenseChannel]

That's pretty sweet, you just keep making it easier. I already did a 3kh build with the R5 batteries for my office which I made a video for. My next build will be with LiFePO4, cant wait for those to become more affordable too.

[@drewski23_7]

Strong Casey vibes in that intro!

[@witness1013]

This pcbway channel is one of my faves!

[@MARINECORPS61992113]

You can always repin those connectors if you have the time to do so so all the wire colors match

[@stephenross4333]

Definitely worth re-pinning to eliminate confusion (or at least add colored electrical tape to ‘correct’ the mismatch.

[@volksbugly]

Nice one! I'm watching all your videos and deciding on what to build.

[@bradleyclark5936]

Working hard to understand this setup style and concept better. This would be ideal for what I dreamed up in my head. Built to add capacity more over time.

[@philipng6598]

Very informative. I was wondering how to get parts as I might build something similar but different from your designs. Thank you for the video

[@RitzRT]

What is the plan to keep the battery packs cool when they inevitably heat up inside the metal case that no longer has any cooling fan??

[@mr89firebird]

Love the template idea, but, wouldn't it make more sense to have the spot for the step drill hole be a centering guide for the initial hole?

[@Shmade0304]

Hell ya jehu always coming thru with the best diy content …NMC is still a great chemistry🙌🏽🙌🏽🐐🐐🔋🔋👑

[@ErvigHenry]

Reply: "Wow, the Segway Portable PowerStation Cube Series seems like an amazing backup power solution for outdoor enthusiasts like us! The massive capacity, fast recharging, and waterproof technology make it a reliable choice. Plus, the smart app control adds convenience. Thanks for sharing this recommendation, I'll definitely look into it for my next camping trip!"

[@andrewmutavi590]

Dope stuff as always,would love to see u do an updated powerwall video for say an EV recharching pack

[@martinmooren9536]

For half the price you have to diy a battery with a difficult to use 36V, with around 1000 instead of 6000 cycle life (cut from the video) and without any warranty. That doesn't seem very attractive to me. Nevertheless I really like your inspiring ideas and creativity on these kinds of projects and builds!

[@robertsmith2956]

Have you thought about the COST of mailing your warranty battery back for service? The shipping cost will be more than buying a replacement battery. You don't need to use scooter batteries, you can use lipo4 ones, and get the 48 volts and 6000 cycles.

[@about2088]

Hard pass. Cool project though

[@DavidHalko]

36v? Genetry Solar inverter & walk away happy

[@Fluxkompressor]

Very nice concept. Good job. But could you please google PCB mouse bites. These huge break away tabs leave a unpleasant edge. If you do them with mouse bites, you can have the sharp edges sort of sunken in to the edge of the PCB

[@mr.brightside3211]

Wow great video! Thanks for sharing and answering those questions! Awesome Job 🤓👍🏻

[@jacquesb5248]

yet another clever idea

[@surepowersolutions7260]

that's awesome! Seems like a fun project. fyi, Powerupess lfp rack type systems are 5.1 kwh systems for like 250 per kw. Local in phoenix az, not across the big pond..

[@markj284]

Love these videos. What kit would you suggest for a 48v solar setup currently using 4 x 48v lifepo4 batteries. I would like to add more batteries to my setup. Thanks for sharing.

[@jehugarcia]

Here you go 16 of the LEV60 cells makes 3.8kWh jag35.com/search?q=LEV60

[@Zodiac83104]

You could just buy new lifepo4 cells from 18650batterystore. I did the math. It’s exactly half off if you build them yourself. Either 100ah or 280ah cells. 😊

[@kalbarriman]

Great video...any suggestions for the solar inverter you could connect to those batteries?

[@Dandoestilla]

I like this idea and it seems like a great kit however I didn’t see you using any grommets for any of the metal openings

[@ikani1]

As a heads up, there are some states in the US that are currently planning on banning new installs of NMC battery systems due to the fire risk, and requiring LFP. DIY is great and I am working on my own system currently, but if you plan on being connected to the grid at all, you'll need to pass inspection!

[@thamesmud]

Seplos Mason kits seem a better bet, at least they are lifpo4 batteries rather than lion. I have just bought 34kwh for just under $7000 delivered to the UK so about $206 per KWh. A bit more expensive but new lifepo4 cells, a quality bms and a lot less hassle.

[@jehugarcia]

Good for you

[@Roll2Videos]

Very cool! It looks like a fun build.

[@b3owu1f]

Love the project idea.. but I am concerned about the battery pack.. it indicates they are used batteries.. most 18650 batteries have 500 to 1000 cycle rating, new. I think I read these packs you are recommending come from a brand that is rated for up to 3000 cycles.. but from the link there is no guarantee or testing done to ensure all batteries work/charge, what sort of capacity, etc. With that in mind.. how far of a stretch is to look to purchase/use NCR 18650s or even cheaper options and make your own packs for this kit? I think that would be an additional great option you might be able to share (in a separate video perhaps.. how to make a battery pack for this larger battery solution).. maybe some different 18650 battery options/prices.. and how to put each of the 18 packs needed for this battery kit to use.

[@Dmpddiver]

Would really like to see a 48 volt system or even a 24 volt system so I could use it with my sol-ark system

[@jehugarcia]

Both are coming soon

[@Dmpddiver]

Fantastic 😊

[@robvermeulen]

Wonderful project! Too bad it is difficult for EU people to start on it, as shipping your batteries to here will make the whole project not as cost-effective anymore (and some of the parts will also be unavailable from the websites you selected). But it is very inspiring to see how it can work.

[@gijs3926]

Agree! Maybe a video for something in the EU in the future?

[@kwinzman]

Absolutely amazing project. +1 for a battery source in EU!

[@cdoublejj]

they all come form china, rack mount lifepo4 isn't new, i'd image they are shipped to the EU by the boatload unless yall have big ol tarrifs

[@randywelt8210]

U can make 16s EVE, CATL.. 280 48V 14.4kWh plus Daly BMS also for around 150Euro/kWh. There is also stock in NL for around ca. 170Euro/kWh?! Check out some German DIYlers.

[@johnsherby9130]

I live in the states and his website is basically like a candy store for battery nerds. only problem is I'm about 2000 miles from his warehouse so shipping is still pretty high. I was able to get 10 of those packs shown in the video for $240 shipped though, so still not bad. hopefully someone in the EU does something similar with reclaim batteries soon

[@newhomeownersideas4658]

great work, I was wondering if this battery storage can be used for EV charging?

[@Subgunman]

When power from the grid was a bit cheaper, individuals who had off peak metering would charge their batteries off of the grid and during peak hours they would switch to inverter power to save money. An alternative until one installs solar and wind power.

[@oso2k]

Careful with your terminology. That's a 5 battery unit, 19" wide rack. A "Rack Unit" (or U) is a standardize size of 19" wide rack equipment that is 1.75"/44.45mm tall. Common in computer industry, audio industry, telco industry. You can find racks of 8U, 10U, 24U all the way up to 42U. Most will not have wheels on the bottom. Instead they are intended to be mounted to the floor w/lag bolts since they become quite heavy (even when empty), to distribute their weight to floor or platform, and to avoid tip over hazards. You should likely avoid going to tall with a battery rack, because it they far heavier than the typical equipment they are intended to hold.

[@ikani1]

at my day job, we even had a few super tall 52U racks :D That was definitely pushing the limits of being manageable, though

[@budmartin3344]

Since you have mutiple battery packs, each one with its own BMS, so how can you tell if one or more of the BMS has gone into shutdown? No circuit breaker on the front panel for quick shutdown like the more expensive rack?

[@kimrobingraham]

I would love to make one of these and shoot for around 40kwh. Do you have info on how to connect multiple boxes together? Do you have info on how to connect this to an inverter and connect it to your home? What inverters do you recommend? How safe are these batteries after you remove the fan? Could you just move the fan to the outside of the case?

[@mschaus]

Once this project is made, it would connect to inverters etc just like other rack-mount batteries that have tons of videos here and other channels. Only oddball part to this project is that it is at 36V, so you (probably) won't find all-in-one hybrid inverters at that voltage. But you can certainly find standalone 36V inverters!

[@dontbanmebrodontbanme5403]

The batteries must be giving off a lot of sunlight! 😂

[@itravel1177]

Which 36v inverter can you run a whole house with?

[@RRmelgar]

Complicated for sure limited to Chinese off brands many with modified sine wave which may not be reliable remember one need split phase 240v

[@itravel1177]

@@RRmelgar seams like the savings is not worth the headache.

[@robertsmith2956]

@@RRmelgar Actually you could hook 240v devices to it's own 240v inverter. 110v don't care if the other 110 volt socket is 180 degrees off, it only cares about the one phase. You could have them 3 degrees off, and everything will work fine no matter what socket you plug into.

[@powerwall]

Great help, more options.

[@RokDAWG1]

Interesting…so could put together a full high powered off grid battery setup with these.

[@mfgxl]

Great editing as always. Wish more channels would take notice.

[@JankyShack]

I had a 13s8p lithium ion BATTERY FIRE in my garage and I 100% absolutely DO NOT think saving a few thousand $ on batteries is worth losing everything I own. Lifepo4 is the only way to go with a pack this large unless you're keeping it in a shed 50+ feet away from you house. If I wasn't home when I heard the cells exploding I would have came home to a concrete slab, within 15 seconds the flames were already 24"x24"ish and I hit it with a 5lb ABC fire extinguisher which killed about 1/2 the flames because even though it didn't put the batteries out it put out everything around the batteries that were on fire. I eventually managed to push the flaming batteries out with a broom and drown it with water.

[@Rj-nh1df]

I was thinking someone should invent an easy rip off the wall disconnect in event of fire 🔥 😂

[@JankyShack]

@Rj a 5kwh battery weighs about 100 lbs, so idk how easy it will be lol

[@StahlFirearmsNo2]

how clean is the power coming out of these or does that depend on the inverter? next question whats the best inverter I want to build a modular battery backup for a future server setup.

[@jehugarcia]

Depends on the inverter

[@StahlFirearmsNo2]

@@jehugarcia do you have any recordation's for inverter series or brands?

[@brianolson1158]

What would happen to lithium batteries in your home , if a carrington Type event were to happen , I’m curious. I read it could cause thermal runaway in the battery

[@sundance2005]

Great project. My problem is I have a Tesla Powerwall and I would like to have something like this for extra storage (can't run my A/C with one Powerwall) to run along side my power wall totally separate but I don't know how to do that. Also I am not comfortable with NCM batteries in my home (garage). If you could do something similar and save us money but with LiFePO4 that would be great.

[@lugo2214]

Cool Any of these combos that would be 48v compatible?

[@jehugarcia]

I’m working on one now

[@theMekanik]

Use the DIYs with your Grid Tie Inverter to dump all the power Back onto the Grid. Problem Solved for 36 Volts or use them as Explanation Batteries for your EkoFlow / Bluetti / Anker Solar Generators.

[@sh839c]

Really good video. Can you give me a link to the rack that the Jackiper batteries are on please.? Also, any chance of a 48 volt diy build?. Thanks.

[@uhjyuff2095]

2000 cycles. Nice!

[@greensunsolarJoeNi]

Great vedio, the battery which we produced is also great

[@sheeplehurder1449]

The cells in the DIY setup---->Battery chemistry that can catch Fire. The cells in the Jakipur---->Battery chemistry has a minimal chance of fire.

[@medfly101]

I really need this in 48v for my sol-ark 12k.

[@memadmax69]

Oooooo... I see some smexy Vdub buses back there. ^.^

[@jonmat1632]

what is a good 36v inverter?

[@vhaakmat]

I have 2 left hands. Do you sell these readymade including inverter?

[@larrybell4599]

Interesting concept, but I’m sticking with 48 volt LiPo4 batteries.

[@GHILLIESARCADEANDMORE]

Curious to know what's the weight on one of those Box units complete

[@jamescole6846]

18650 is 1.23 ounce. 35 lbs in batteries, the case is 15 lbs plus another 5-7 lbs for wiring, battery cases, PCB, BMS etc. So 55-57 lbs

[@HostileTerritory]

Do you have a link to the $7000 system?

[@johnbailley4468]

how would you use this to expand your ecoflow delt pro 3600?

[@stevepriority4219]

According to your site: These packs are reclaimed from e-scooters and are "untested" Also, is there no bms? This pack is not going to last long. That more expensive battery you have up there is going to last at minimum 10 years and probably 20 years. Lastly, what inverter do you use with your pack to power your home? 36V is such an unusual voltage to work with when doing a home backup. This whole plan is a bad idea.

[@DavidHalko]

A Genetry Solar inverter is available in 12k and can use 36v… so no big deal on that front.

[@acefire4050]

So I won't have to worry about the drill bits because I got every type of drill bit.

[@terryterry1655]

any NMC532 batteries in the market (apparently can last for 100 years if maintain at 25 deg Celsius and charge from 20% to 80% each time.

[@benjiebarker]

0:33 when you say install into an inverter…is it possible to connect the battery rack to a delta pro which is connected to the home via generator port? What port on the delta pro do i connect the battery rack to? Thanks. I just subscribed 😊

[@JohnBraman413]

what rack was that? have a link for it? batteries seem to fit good in it.

[@ITshnikBro]

Just curious - does US have cities/states where there are issues with electricity or it's delivery ? Why you using them ?

[@KuramaKitsune1]

Since the scooter batteries have their own BMS system can I just leave them plugged in 100% of the time? I have a growatt infinity 1500 system and it totally has a solar power input Just trying to think of how I would keep these charged at the same time

[@herbertvonsauerkrautunterh2513]

Great project and looks good but it's not quite the same thing. I'll stick with the jakiper...

[@TwstedTV]

Do you have the links for the rack complete setup on the left side ???

[@marshallwilliams4054]

Have you thought about doing a lower capacity 24V version? That would overcome the limitations with 36V if two batteries were wired in series

[@isovideo7497]

Careful - the BMS in each 24V battery would have to be designed for connection in series. They usually put such limitations in the small print somewhere...

[@lennieadi]

Please send links to 36v inverters that can daisy chain. I can’t find anything, not even a stand alone inverter. Is there any point to a 36v battery if all inverters are 12/24/48 and above??

[@MichaelEricMenk]

1:10: no... This is not a 5 unit rack. One battery is at least 4 unit high. So the rack is most likely 20U, with 16U currently used.

[@robertsmith2956]

I don't see any 1u holes. It only excepts a 4u case, so still a 5 unit rack. With the weight, probably a good idea NOT to use a standard 20u rack.

[@robertsmith2956]

I don't see any 1U mount holes. It only accepts 4U cases, so a 5 unit rack. With the weight I wouldn't recommend using a 20u rack either. You want those solid rails.

[@ljaieljai]

Dude is thorough......

[@josephcatano4705]

Is there not a concern for accidental shocking when opening/unlocking the panel door/cover?

[@stevevarberg8005]

When are 20kwhr of LiFePo4 be less than $600? These prices are still painful

[@robertsmith2956]

Go shopping with the rioters. They probably don't even hit the battery isles.

[@peterthomson6161]

Nice kit.

[@letterglettera9318]

36v, so any suggested inverter solar charger?

[@fuskeiro79]

I have a 10KWh system with Enphase inverter using 25 microinverters for the solar panels(400W). Can these batteries work with my system?

[@fuskeiro79]

@jehugarcia

[@jehugarcia]

Yes and no. Your system is closed loop, doesn’t have a way to add a battery. But you can add a grid tied battery, they are called ac coupled battery system, google that to see how it works and how you can install it in your home.

[@fuskeiro79]

@@jehugarcia Thank you So much. Hopefully I will find a batt that doen't cost $10K.

[@murbella7]

I am interested to know how many homes have burnt to the ground using this or similar DIY battery systems. Also, the cost of the inverter is 2-3 the cost of the battery.

[@jehugarcia]

Nope.

[@Ken2ndAmendment]

Both option per the total life of use they are not cheaper. LFP vs Li-on your lose the number of cycles. Then what do you do when the batteries are depleted? Come back for another DIY?

[@pierre-alexandrelemay1720]

how they get balanced ???? i see the cable but no bms controller no safety like the other one ?

[@jehugarcia]

Each one has its own bms

[@pierre-alexandrelemay1720]

@@jehugarcia but how u get them balanced between each of them ? Because .. if its goes out of balance ...

[@bnk28zfp]

what kind a variable power sup do you use?? 11:15 thank you

[@MrRich1068]

How about building a 24 volt and put 2 together to make 48 volt. Is that possible.

[@jehugarcia]

Not with these battery packs but we have other battery packs that can be setup in 24v in that same box, future project perhaps

[@FirstLastOne]

You should probably start your video with a full disclosure statement that installing this NON-certified backup battery in your home will absolutely guarantee your home insurer will not pay out if the cause of the fire was due to your DIY battery.

[@kobibr9362]

would you use these for a van?

[@michaeld954]

I came across some one selling 3 pellets of oso lifepo4 batteries for 700 is it worth the risk

[@bdaddy355]

I have a question. Can you just leave a couple cells out and make it a 24V instead of a 36V? Everything I have is 24V and i would love to build several of these and hook into the system I already have.

[@jehugarcia]

No these are 36v packs

[@bdaddy355]

@@jehugarcia thank you

[@Rj-nh1df]

Recommend this setup or 18650 power wall??

[@DavidHalko]

This is effectively a used 18650 power wall

[@justkiddin1980]

When it comes to these batteries i don’t want “affordable” i want reliable…

[@EvanCarrollTheGreat]

No active cooling?

[@biggregg5]

Do you, by chance, know anything about Fengchao battery cells? I'm considering buying a scooter that uses them, and I can't find anything about them.

[@MinhTrinh918]

Heh Jehu, can you do a video of how to connect server rack battery (eg4, jackiper) to charge power station like Ecoflow delta pro? Thanks

[@lion-kz2ks]

can you do a diy with inverter too ?