DETAILED Replacing Ryobi Riding Mower Batteries

[@RonSamson]

Maybe the best DIY video I have seen. Very accurate, great camera shots. I didn't have to guess where each component was or how to get to it. I need to change a battery this week so it was great finding this video. Thanks again.

[@beaterboxgarage]

Wow thank you so much for the kind words. I appreciate it!

[@fritzleboo]

Deserve tons of thumbs up

[@gabriellerousseau2277]

I am so happy I found this today. I'm not good at doing this kind of thing ( 66 yo Grandmother - this picture is old ) and didn't remember where that sensor connected back. The connector for mine broke as I was pulling the tray out. So I realized I could just remove it at the battery, connected it back, and taped it. I just forgot which battery I took it off lol. So thanks so much for that. As well, I didn't remember where the spacers went. Now I do. I'm waiting on a charger. Apparently some chargers can help a battery to somewhat repair, it's called "Battery Maintainer and Desulfator," so I am going to do all 4. This might be a marketing gimmick, but it wouldn't hurt, and one showed 11.5v using my new multimeter. The rest showed 13.1. I'm going to watch the full video even tho I got what I need from it at 17.36 so thank you for being so thorough. edited to add: I am using one of those old hard plastic milk crates to hold the entire tray. It's very close to the perfect height and it is holding the entire weight on it. I wanted it out of the way. further edit: when the tray is out of the way the transaxle is exposed. So I drained it and refilled with good gear oil. I hadn't done this in 450 hours so I hope I didn't ruin it. It had been stopping all the time and I thought it was the battery. Maybe partially, but I think the transaxle oil is the main issue. I hope.

[@beaterboxgarage]

Thanks for watching and commenting!

[@nickeckhardt1168]

Currently changing out my four 75 amp batteries which are 5 years old and starting to not make it to 100% charge. I feel blessed that none of my batteries have failed, but it's possibly due to hardly ever running them all the way down, or the mild weather in Florida. Amazon prices for the batteries were $160 for the 75 amp and $170 for the 100 amp, (March 2024) and I decided to replace with four 100 Amp batteries, which are longer and the brackets at each end of the tray will need to be either removed or moved much closer to the ends of the tray (I am going for bolts to replace the threaded rods today). The higher capacity batteries should mean that they will not be run as far down, which should lead to longer life. Thanks for such a comprehensive video. I will certainly remember to install the battery hold down correctly, (thanks for leaving that part in). I have used two cinder blocks, two pieces of 4x4, and a piece of 3/4 plywood (or 2 pieces of 1 by 4) and build a platform that provides very stable support for the battery tray. It uses what I have, and I just build it behind the mower.

[@beaterboxgarage]

Awesome deal on the 100 ah! Thanks for taking time to write a comment appreciate it

[@Dm3paintball]

Dude! Thank you, this was an awesome step by step All of my bats were 12.7 to 12.8 volts but 3 of them were giving under 50 CCAs. Just a note, any auto parts store can test these for you, just throw them in the trunk and they come right out to you. I think I’m back up and running!

[@beaterboxgarage]

Glad it helped!

[@LockerC4]

Just used this video as a reference to replace all 4 batteries in my RM480E. Running great now. Thank you so much!

[@devinwinterbottom]

Hey where did you get the batteries? See you in a lot of negative reviews on the ones from Home Depot.

[@beaterboxgarage]

Amazon. Link is in the description

[@beaterboxgarage]

That’s awesome you got the batteries replaced!

[@pdj9mm]

Thanks for the very detailed how-to video and taking the time to show us how to replace these batteries. I am definitely using this video as a reference.

[@beaterboxgarage]

Glad it was helpful!

[@MzMRL]

Thank you for the detailed video!! I was having issues with the mower stopping and then start beeping and battery drained after a half hour. After investigating here and there figured out it was due to the short life of the batteries.... of course they don't mention that when you're looking to purchase the mower!! Seems like all the videos are about replacing the existing batteries with an upgrade and not just swapping them out. I'm not mechanically inclined to be replacing the charging port, battery meter, as well as the batteries so I really appreciate your video! Now, about that squeaking... 🤔 going to have to search your videos for that cuz I'm having that issue in the front end too.

[@jamescanning1364]

Thanks for making this video. I will be buying this mower and IMMEDIATELY be replacing the SLA with Lithium Iron Phosphate. Now I know how to do it! I plan to cut the charger end off the factory charger, and replace the charger with an EG4 48 volt fast charger, and I should be set for the next 10 years.

[@beaterboxgarage]

Sounds awesome !

[@joescott991]

This video was extremely helpful in replacing these batteries! Very detail oriented and didn’t skip any steps which a mechanically challenged guy like yours truly needs! One suggestion: would be awesome if you could put a disclaimer at the beginning of the video for when you accidentally put the big yellow metal bracket on backwards that would be super helpful and not nearly as time-consuming. 😅🙏🏼

[@beaterboxgarage]

haha! Glad it was helpful!

[@j-dog9800]

I'm going to be getting the exact same model for Father's day. I've subscribed and saved... might need your other videos as well...thank you!

[@beaterboxgarage]

Thanks for the sub! There will be more videos on this mower for sure, stay tuned 🙂

[@mikemannion788]

Appreciate the attention to detail and the time you invested.

[@beaterboxgarage]

Thank you so much

[@rickcowan7527]

Superhelpful. Thanks for taking the time to share your knowledge with us!

[@beaterboxgarage]

Thanks!

[@bbaillod]

Nice video, I just did this myself after watching your video. Very helpful!

[@beaterboxgarage]

Awesome, thanks for the comment!

[@joanbarber5384]

Thanks loved your video and the Amazon list!

[@beaterboxgarage]

You are so welcome!

[@Vizjion]

I see two different Mighty Max batteries and one says deep cycle in the description and the other in your link doesn't, what's the difference between the two and is the deep cycle compatible with the mower 🤔

[@billverine765]

So the Ryobi charger works fine with the AGM batteries? I have an electric fishing boat and I used to run AGM before I upgraded to Lithium and my charger had a specific setting for AGM. My Ryobi mower just started acting up with losing charge in a big hurry. I have elderly folks on both sides of me and I clean up their leaves for them, and I used to be able to do both of their yards and mine and never even get down to 50%.

[@jimwoods7639]

GREAT VIDEO! What function does the sensor wire you forgot to unplug when pulling out the battery tray perform?

[@beaterboxgarage]

Not 100% positive. Usually sensors on the battery terminal either are a secondary voltage indicator or a battery temperature sensor. In my automotive field they’re used as temp sensors. But I cannot say with certainty what ryobi uses this sensor for.

[@woodyfitzgerald7367]

Thanks so much for this tutorial! I've got the same mower...and battery issues. Wondering if you ended up being happy with the replacement battery you list from Amazon as I need to get replacements. Thanks.

[@beaterboxgarage]

Yeah the two batteries I replaced are still doing good. Unfortunately the remaining two batteries are failing after sitting this winter. So time to replace those two or convert to lithium. I may switch to lithium even though it’s far more expensive just so I can make a video on it lol

[@JustWasted3HoursHere]

Thanks for the very detailed how-to video! In general, is it better to just replace all four batteries since they are probably the same age? Otherwise you'll probably end up having to do it all over again with the next battery when it fails. Anyway, I love my RM480e and have had no issues with it for 2 years (bought it essentially new) until a few weeks ago when the blades stopped spinning about halfway through cutting the yard but it would still roll. Charged it up overnight and finished the yard with no issues (but the battery indicator shows only a few bars even when fully charged). Thanks again.

[@beaterboxgarage]

Yes it is technically better just to do all four at once. I’m just cheap at did the two that were for sure bad at once but I know I’ll have to do the other two soon lol. Thanks for watching a leaving a comment!

[@vandenbossm539]

Any idea on what you should do in cold climates with these mowers? I am looking at buying one and see it says to keep it on the charger when not in use, but in the winter (December-February) it often gets below the temp that they say not to charge it at... do the batteries degrade if it sits for a month or 2 without being plugged in? What is worse for it- leaving it plugged in when it is cold or leaving it unplugged and then plugging it in on warmer days?

[@beaterboxgarage]

If you can and have the space... I would pull the batteries out one by one and store inside that's above freezing (basement, 4 season room, garage etc). Once they are all out and separated you can get battery tenders for them that are normal 12v ones from amazon. A cheap two-pack (you would need two of them) are like these amzn.to/4ebUiWf A good 4 bank charger (one charger does 4 batteries) is this one but its pricey. amzn.to/3x2SBJN

[@drr7774]

Great video! I notice you use a $3000 battery diagnostic station, any recommendations for those of us without such equipment to test? I'm assuming the battery has to have a load on it to test for CCA. Or can we just assume any battery under 12v needs to be replaced?

[@beaterboxgarage]

You can take the batteries to any auto parts store and they can load test the batteries for free. Auto zone. Advance auto parts etc

[@joerice7467]

Great video! I have the same mower. What a deal you got! When it comes time to change my batteries I am planning to change to lithium phos. There is another video out there where someone did this. Just need to find it.

[@beaterboxgarage]

If I ever get to the point of switching to lithium I’ll do a video for sure. But should be the same process I would imagine.

[@beachbumpkin]

Same here, will look into changing over. This last cold snap did mine in but has worked great mowing and bagging for 4+ years.

[@fpartidafpartida]

Completely agree. If you replace them with LFP batteries, you’ll only do that once. Yes the are more expensive (~$250 each), but time is money, not to mention that if they last longer than 2X your lead acid, it’s actually way cheaper in the long run. I bet LFP would last you 10+ years.

[@ericcire7063]

@@fpartidafpartida I heard you also have to replace the stock charger cable with a lithium ion compatible charger. How would that affect the charger port on the mower? Can you or anyone else confirm this?

[@davelawson7334]

Awesome video very educational

[@beaterboxgarage]

Thank you 🙏

[@FreeformD9889]

Excellent video, thanks for the info. I had issue with reduced run time, ryobi gave me 4 new batteries under warranty but no improvement. Checked voltage like you have and 1 of the new batteries was bad so I used a good battery from the original 4 and problem solved. My question is I am hearing different thoughts of mixing batteries. What are your thoughts? I’m thinking as long as your not mixing ah, like 2 75ah and 2 100ah, should be ok. Thanks again for the video

[@beaterboxgarage]

Keep the capacities the same and you should be ok. It’s best practice to keep same model batteries together but I haven’t had issues with mine being mixed

[@jimschnoor4171]

I am having problems with my Ryobi 48V 54 in. mower. I am waiting for them to call back tomorrow. I offering 4 new batteries what they typically do? I bought mine in April 2021.

[@FreeformD9889]

Yes, the ryobi tech told me that if it is a battery issue they always replace, under warranty, all four batteries.

[@danaelise1262]

Hey I’ve replaced a battery and then reconnected however, it is still not getting full charge. It says 74.9 when turned on. Any suggestions? I took the battery back out and hit it with the charger. Did you have any problems with yours like this? Thanks so much!!! ~Dana

[@beaterboxgarage]

Are the other 3 batteries good? I’d recommend charging each battery Individually on a regular car charger. Once each is charged then reinstall into the mower.

[@alfunbags]

Great work here this was just what I was looking for to help my Dad with his mower. We checked all four batteries (they are the longer ones that fill up the tray) and got 11.25v, 10.49v, 10.75v and 10.10v. We're trying to figure out if we need just 3 or 4 new batteries, any advice would be greatly appreciated!

[@beaterboxgarage]

I know it’s a lot of work but you could take the batteries to the local parts store (auto zone, advance auto parts, oreilly etc) and they can test each one for free to see what condition they are.

[@alfunbags]

@@beaterboxgarage Definitely not out of the question, what does that tell us, amps for each batt? I figured with the multi meter showing us voltage less than 11v the batt should be replaced so I'm unclear on how to determine when it's really dead.

[@beaterboxgarage]

@@alfunbags a battery test at a parts store will tell you the condition of the cells. Voltage is just a quick way to see if one of the batteries isn’t holding a full charge. If you charge the pack and they’re reading in the 10v range then they are bad.

[@alfunbags]

@@beaterboxgarage Nice, great info there, thanks for making my brain a tiny bit bigger!

[@cathunter101]

I replaced one of my batteries and started up the mower and it worked fine. Then I tried to put the spacer and screw in to hold the battery connection to the motor. There's a plastic casing around part of that gizmo that seems to have come loose. Is that part replaceable?

[@beaterboxgarage]

Everything on the mower is replaceable. Just depends on if you can get one piece or if it’s a part of a larger piece. Ryobis website has a parts ordering page but you will need to download the parts diagram for your motor. Also on their website

[@cubsareme]

Helpful for sure. Same issue here. Will be testing batteries in next few weeks. Mine powers down after 20 minutes?

[@beaterboxgarage]

Definitely sounds like you have reduced capacity on one or more of the batteries

[@nananooknak]

Finally got around to mine after getting my new batteries last year 😂 neighbor had bad batteries as well on EV zero turn Ryobi... So it doesnt matter what sequence you reinstall the batteries or comms?

[@beaterboxgarage]

Shouldn’t matter the sequence

[@Sylvan_dB]

Great tutorial, thanks! But wow, why is that bracket not made symmetrical? I'm thinking a drill and tap will avoid installing it backwards ever again!

[@beaterboxgarage]

Good call!

[@DanielBailey-e2e]

Great video!Your next homework assignment is to replace all four batteries with lithium batteries and you might as well upgrade it so that it's the higher amfridge.

[@beaterboxgarage]

I would if they weren’t so expensive lol. Currently still going strong on two replacement batteries. I need to find a battery sponsor to donate lithium units to do a video. That would be nice 😀

[@joevwgti.]

@@beaterboxgarage Great work. I swapped ours for LiFE-PO4's. Walmart had them online, offered to take them back locally, or I'd have gone with Amazon. It was $1,400, but the new batteries have their own BMS' internal with heat/cold sensors, plus they'll charge with the stock charger. You'll eventually get tired of buying NiMH, over n' over. Can't suggest this enough.

[@SCAquatics]

@@joevwgti. I plan on swapping to lithium this spring 😎

[@jeremylindsay6406]

Hi so I followed your video up to the point of testing the multimeter, but did not unhook any of the batteries (think they are all connected) I’m testing all 4 and they’re each 12.44 one is 12.57. I have the same problem you were describing, would not move but still powers on. What am I missing here? Am I supposed to unhook the batteries from each other then test them each? Or are my batteries done and I have a separate problem?

[@jeremylindsay6406]

Or are my batteries good* different problem

[@beaterboxgarage]

I would unhook each one. When they’re all connected together they are essentially “balancing” each other out. They need to not be connected to each other to see their true voltage

[@jeremylindsay6406]

I appreciate your reply. It ended up being the drive controller. It was faulty and needed to be replaced. Now I’m back in business. Batteries are fine. The drive controller was a little bit of a pain to replace, but using your video made it simpler to reach it. Had to order the part from ryobi..$400.

[@commonman80]

Great Work.. You Saved The Day😎😎😎 Thanks...

[@beaterboxgarage]

Thanks!

[@mrwojna]

You’re the best, Bro!

[@beaterboxgarage]

Thanks!!

[@jeffsmith6201]

Great video, but but how did you get the battery indicator to show percent? It came from the factory with hours as the display and there is no button to toggle between the three display modes. Very frustrating.

[@beaterboxgarage]

My gauge cycles the three settings. You turn it on and shows hours, voltage then percent. It auto cycles when ever the key is turn on. Shows each for a second or two then stays on percentage. Im unsure if there’s some “back door” way to change your gauge?

[@jeffsmith6201]

@@beaterboxgarage Interesting mine goes right to hours and does not cycle at all. Thanks for the feedback!

[@danieljordan3982]

I have the same issue with mine. My low battery is 11.2v so do you think this is high enough to charge up and not flat out replace?

[@beaterboxgarage]

11.2 isn’t hateful but what were the other three at?

[@danieljordan3982]

@@beaterboxgarage I had already replaced one so it’s at 13.1v. The other two are 12.7v.

[@beaterboxgarage]

@@danieljordan3982 being that it’s 11.2 and the highest is almost two volts different that one would be your issue. They batteries after being fully charged should be within a couple tenths of each other.

[@JersonIbarra]

How are the batteries holding up?

[@beaterboxgarage]

So far so good! I can tell the other two original ones are getting weak but I’m still able to mow my house and my neighbors yard on one go so I’m going to ride it out (pun intended) until they can’t hold a charge for the yard.

[@waynebarto3540]

Great video! Question: Can you tell me why your numbered the batteries in the sequence shown in the video? I know these batteries are connected in series, but is the numbering sequence you use the sequence of how they are actually hooked in series? The reason I ask is I am installing a Pulsetech PowerPulse 48-Volt Battery Maintenance System which acts to desulfanate the battery plates and thereby extend the battery life. They say that the system should have the positive lead hooked to the first battery's positive terminal in the sequence and the ground lead hooked should be hooked to the negative terminal in the last battery in the sequence. Any thoughts on this?

[@beaterboxgarage]

The batteries I numbered were in no specific order, they were numbered so when I tested them at work with the battery tester I was able to match the print outs of each test result to the battery. So that way I knew that "battery 2 is faulty" and which was which. No rhyme or reason. Series is just negative to positive, negative to positive and repeat. It sounds like the maintainer just needs connected at the first battery (positive) and the last battery in the series (negative). That would give it the full 48 volts to charge.

[@waynebarto3540]

@@beaterboxgarage Thanks for the response...yes you are correct that the maintainer needs to be connected to the first battery positive terminal and the last battery in the series negative terminal. However, I do not know for sure which battery is first and last? I ended up connecting the positive lead of the maintainer to the positive terminal of the left-side rearward battery and the negative lead of the maintainer to the negative terminal of the right-side rearward battery. Do you think that is correct? That was the best I could figure out from looking at the wiring because I could not find any wiring diagram that shows it. Thanks again!

[@nick15331]

I have this same mower and have done this battery swap and when I heard that pop from the sensor I laughed hard. Every time.

[@beaterboxgarage]

haha

[@GluefactoryOffroad]

Quite informative. Thank you for making the video

[@beaterboxgarage]

Glad it was helpful!

[@waynehajek6346]

Put some rubber tape or heat shrink on your socket extension to keep from grounding to the frame.

[@beaterboxgarage]

Good idea

[@margarettrotta6658]

Question: Do batteries need heaters for winter storage of the mower?

[@beaterboxgarage]

Technically no. But I would recommend storing the mower inside a garage or building that stays above freezing. If that's not possible, you could pull the batteries out of the mower for winter and store inside.

[@hayesmyers2259]

@@beaterboxgarage I plan to pull them and put on trickle charger indoors as well...same problem of non-heated shed.

[@ospreycove]

An excellent video. I just purchased this and have been getting nervous. I am still worried about winter storage. I have this at my cottage where I will not be during the winter. I can leave it plugged in so hopefully it will be fine....but it's in a non-heated building in Canada where the temperature can get to -20 to -30 C. Worried

[@beaterboxgarage]

Well with any car battery extreme colds can take a toll. Leaving it plugged in should help hopefully.

[@darylanderson420]

@@beaterboxgarage I left mine plugged in all winter as the manual recommends and the battery pack was almost useless this spring... another youtube on this machine says that leaving the batteries connected to charger all winter (if/when it goes below freezing) will cause sulfation.... which is presumably what happened to mine.

[@beaterboxgarage]

@@darylanderson420 I have a therory that the charger once it kicks to float mode doesn’t charge correctly. I want to do a video to show why I think this from my testing I’ve done so far. I just need to get some tools in order to test/prove my theory. I noticed even during summer after the battery charged the pack would read a bit low a week later when going to use. If I unplug/replug the charger an hour before I use it, it goes from solid back to blinking. Then i end up with a full charge on the gauge as well.

[@BFArch0n]

I use mine all winter in ny to plow the driveway so nonworries! 5 yrs strong! :) bought used too Not $200 tho damn! More like $1600

[@fpartidafpartida]

If your viewer want a great deal, they should look for these. For whatever dumb reason, Ryobi put Lead Acid batteries in their initial riding lawn mowers. These are guaranteed to die after about 2 years. Nothing wrong with the mower, just needs LFP battery replacement.

[@beaterboxgarage]

Lithium is definitely the way to go for long term

[@thepezkingful]

Super useful! Thanks!

[@beaterboxgarage]

Thanks!

[@marccosta8225]

What badery did you use

[@beaterboxgarage]

Link is in the description

[@JohnDoe-ky8vz]

What does the power meter / charge meter indicate? Does it measure the battery voltage or something else? Mine can be 'fully charged' yet still stop running after 20 minutes. Conversely, it can show 1/3 charge and also stop after 20 minutes. My batteries are still showing as 13 13.2 13 and 13.2 v, so I think they're good. I get the same voltage even after running for 10 minutes. For the time being, I have to do 3 iterations of charging and cutting to fully cut my yard with is about 1/2 acre, not anywhere near the 2 acre claim.

[@beaterboxgarage]

I dont know what the meter is reading but I would assume its just a volt gauge. Im not positive though. example: full bars may be 49 volts down a bar may be 48.8 then 48.4 etc etc. I'm looking at using my own charger and my own gauge to see if theres an issue with the charger or the charge controller. Just today I hopped on the mower after it charged all week and it said it was at 50%. Literally plugged it back in and unplugged it and it said it was 100%. Def something fishy with the charger(ing) system.

[@dramprar1]

I have the same issue. I cannot find batteries for mine. I have the 30inch 48v 50ah. I am sure one battery is bad, but I cannot find replacements.

[@beaterboxgarage]

Did you see if the 75ah batteries physically fit (the ones I used). My 75ah mower has the ability to fit the 100ah batteries. Not sure if the 50ah mowers can fit 75ah or not.

[@dramprar1]

@@beaterboxgarage The batteries in mine are different style and the posts are all on the side (smaller end). The batteries like yours would require rerunning new cables. However, I have made the decision to transition to lithium setup after doing a ton of research. I ordered a new charger, lithium style battery, and new gauge. I should have everything by next week. This will reduce my 4 heavy batteries to 1 48v 50ah. If all goes well, this setup will cost me just shy of $1000 and last many more years than these AGM.

[@ProsperCraft]

Why does your Amazon link go to a 75 AH battery doesn't this take 100AH batteries?

[@beaterboxgarage]

My mower is 75ah (but you can upgrade to 100ah as they fit).

[@ProsperCraft]

@@beaterboxgarage Thank you for the reply, they are quite a bit cheaper.

[@eighties8]

Anyone know if its possible to use Ego 56volt batteries (in parallel wiring) instead of four 12v in series? I have lots of Ego batts if I can use those it would be awesome vs having to purchase new batts.

[@beaterboxgarage]

I’m unsure. Hopefully someone with experience can chime in

[@mikecee3058]

If you want to shut that stupid beeper up, while you have the back panel off take off the left side panel. The beeper is under it, and you can either clip the wire or put a piece of tape over it.

[@beaterboxgarage]

I will be doing that! I hate the beeper lol. Thanks!

[@rjazco51]

yep I put 2 layers of duct tape over mine.

[@mattdonegan3531]

The beepe serves as a diagnostic tool. When something is wrong with the mower, it will beep 1 to 20 times to tell you what the issue is. I had to call Ryobi to figure out the code, but it's still useful.

[@PhotoJKyleGrantham]

First, great video. I'm buying one of these from a friend who has had it for four years and I anticipate I'll need to make at least one battery swap. Couple questions: 1. Could you upgrade to the 100Ah batteries by just swapping them in, or would it need a new controller as well? 2. Swapping the lead-acid batteries for Lithium should be straightforward, right? I would think that would alleviate the need to keep it plugged in when it's not in use...

[@beaterboxgarage]

You can switch to 100ah with no changes needed. Switching to lithium may require using a charger specially set for lithium vs the factory RYOBI charger. Lithium batteries require different parameters when charging and when they go into float mode.

[@tivprtnr7535]

Great video! Thanks Update: Mine didn't start, no lights when turning key. I stored my ryobi outside under a tarp but chipmunks got to it and chewed up my wires under the seat. When I pulled out the battery tray the charge receptacle wire snapped off from the charger lockout circuit. Is that connected to the starter control? I don't see any lights when key is at ON position. Oh, incase you're wondering all batteries tested as fully charged. I ordered the parts so just waiting on delivery. Thanks again!

[@beaterboxgarage]

Hope you get it worked out!

[@tivprtnr7535]

@@beaterboxgarage All good now thanks! I just spliced the wires with new single pin weatherpack connectors. Shop wanted $250, I did it for under $20.

[@petemedium2185]

Excellent video and much appreciated. I'm an Aussie and have deep cycle AGM batteries running my house, so know them well. What is the dimensions of both the 75's and the 100 amp batteries? How much clearance top wise is there? Toying with the idea of fitting two 12v 140ah batteries, if they will fit, or trying similar replacements. Less batteries with higher ah capacity. My 140's are tall but thin.

[@beaterboxgarage]

Not positive of the dimensions on the 100ah. The battery listed/used in the video has this as its description: ML75-12 Internal Thread is a 12V 75AH group 24 Sealed Lead Acid (SLA) rechargeable maintenance free battery - UL Certified Dimensions: 10.24 inches x 6.61 inches x 8.27 inches.

[@petemedium2185]

@@beaterboxgarage Thank you for this. Much appreciated.

[@AV-jn1yo]

Great info!! Ty!!!

[@beaterboxgarage]

Thanks!

[@rickryczkowski6965]

You got a deal/steal. Great detailed video. You mixed original SLA batteries with AGM? I thought that would not work right? I agree with upgrading to lithium but its a large expense. One day maybe a 48v 100aHr Lithium will be under $1000. My mower is in its second season and my charger goes blank and charging port blinks fast. Next step is testing batteries and charging each on a repair/maintenance charger.

[@beaterboxgarage]

they're SLA batteries. AGM batteries are still lead acid batteries, they use glass mats between the plates that holds the acid vs SLA which is a flooded acid battery. AGM batteries would def hold up better to the vibrations of a lawn mower thats for sure.

[@rickryczkowski6965]

It's interesting that once I got a tester it's the same battery that needs to be replaced as yours. The rear one with the extra connection. Coincidence or does that battery get worked harder. Who knows.

[@holymolypolybear]

What's the battery life span? How long do i use it after replacement? And how much it the cost??

[@beaterboxgarage]

Not sure the lifespan I’m on season 2 of the two replacement batteries. I linked the battery in the description for the price

[@DjKamiKaze09]

Can you do a LiFePo4 conversion and upload a detailed installation video lol 😆 I need converting, everyone else hasn't done a good job of going indepth and providing a good tutorial.

[@beaterboxgarage]

Haha just need someone to supply the battery! 😜

[@TRYtoHELPyou]

and here I thought 300 was a good deal! you got me beat.

[@beaterboxgarage]

300 is still quite the deal!

[@mikecarter4572]

Ion the other videos I've seen they recommend replacing all of the batteries. So let us know how'd it work. Also what would you think would happen if you had replace that one with a 100ah battery instead of the 75ah

[@beaterboxgarage]

I ran one replacement battery for awhile the only negative was I was still down on capacity. The second battery regained capacity. There’s no reason to replace all four of their all not bad. As far as AH you should keep them matched. You could upgrade from 75ah to 100 but I would do all four 100ah not just one or two.

[@lazarohernandez6292]

Not to brag - I just got one for free 😁 - has some issues - electrical - so gonna work on it 👍 and fingers crossed 🤞 - heavy as hell for sure.

[@beaterboxgarage]

Good luck!

[@roadhammmer]

Anyone know if there is a flooded battery that will fit. They last longer in golf carts if you keep the water toped off vs the sealed

[@beaterboxgarage]

Not sure. If you know the physical dimensions I can tell you. I still have an old battery sitting around

[@brettshapiro6289]

great video. Thanks

[@beaterboxgarage]

Thank you !

[@A.P.I.-2bon2b]

Thank you 🎉

[@beaterboxgarage]

You’re welcome 😊

[@luispatino3180]

To all those saying they want to switch to li ion or lifepo4 batteries just a heads up from someone whose done it before. Just like 1 of the lead acid batteries went bad from the bank and caused issues, the same can happen with li ion or lifepo4. Worked great for a year, and after a tough winter even on a tender, I had cells go bad. Essentially the pack would show 48 volts, but the mower would die randomly and voltage would drop sharply. Came to the conclusion one or more cells in the pack went bad from either summer heat or winter Temps. To have a local scooter store tear the pack apart, test each cell and replace the bad ones i was risking the cost of a new pack, which after charger and shipping was just over $1100 2 years ago. In theory I was hoping the battery to last at least 5 years of worry free use. B.S., went back to my 9 yr old kawasaki powered mower, she's running like a top and my ryobi is on marketplace waiting for a new home.

[@beaterboxgarage]

Yes, even lithium batteries as you said can have issues. I wouldn't switch over from lead acid. Its far cheaper to replace one or two batteries every few years than to replace the lithium. At least in my opinion that's what I would do.

[@Bastens]

@@beaterboxgarage LFP batteries are cheaper than you think, info on my video here kzbin.info/www/bejne/gIi0mYltnMeneqM

[@arminius301]

which brand lifepo4 batteries did you buy? There's a lot of trash low quality stuff out there. But with Will Prowse showing which ones are solid and reasonably priced you should be able to find some solid stuff.

[@MpBabirey]

great share, nice battery

[@beaterboxgarage]

Thanks!

[@johnboy6916]

The only reason I watched this was to see if you did like I did, and left off the plastic covers. BTW, coming from a retired Electronics teacher, You can't get a good test of any battery without giving it a job to do WHILE you are checking that voltage . A 12v headlight would be better than nothing. Car battery chargers, (some do) , have a setting to do just that, it's called a LOAD test. Auto mechanics used to yank (unplug) the coil wire so the car would not start, then test the volts of the battery while the person behind the steering wheel, assisting, is turning the ignition key.

[@beaterboxgarage]

Yep

[@urbexandbrokenthings4806]

Very helpful thank you

[@beaterboxgarage]

Thanks for watching!

[@jerryvelders4457]

Ryobi made a big mistake putting lead-acid batteries in their mowers. Mine lasted one year. Now replaced with LiFePO4 batteries, which perform much better and should last for many years.

[@beaterboxgarage]

That’s my plan next season!

[@mongo64071]

Why not convert to lithium ion?

[@beaterboxgarage]

It’s in the plans. At the time of making it was cheaper to install two lead acid batteries vs buying 4 lithiums. It was good to show people how to replace the factory style if needed. I will be doing another video once spring hits and I convert to lithium. 😊

[@hikurukutai]

I would in stall a bms on battery bank

[@beaterboxgarage]

Not a bad idea

[@cpuram8883]

I've always wondered if you could put an alternator so it can keep the batteries charged

[@beaterboxgarage]

Would be cool but it doesn’t work like that (or all electric vehicles would just charge themselves). One day someone will figure it out

[@cpuram8883]

@@nohandlehere55 the trains use electric motors and they can go for several hundred miles ( loaded)on a gallon why can't they do this for cars

[@RolandGustafsson]

I wonder if upgrading from 75ah to 100ah by replacing all batteries makes sense... anyone have experience with this?

[@beaterboxgarage]

I think if it’s not much more expensive then why not. But I’m able to cut my yard and my neighbors yard on one charge (75ah) so I don’t need to upgrade. I think if I couldn’t muster both yards then upping the capacity wouldn’t be a bad thought

[@jofusm]

Should have gone with lithium. You got a great deal. Lead acid will get you 3 seasons. Lithium lasts so much longer and lasts longer with no trickle charge. Existing charger works with it.

[@gs1100ed]

Joseph I want to switch to lithium, but I was worried that I would need a new charger too. Seems like that’s not the case based on what you are saying.

[@jofusm]

@@gs1100ed Correct, the existing charger works, just don't want to leave it plugged in all the time. The Lithium Phosphate batteries won't blow up from overcharging, but I wait until the charger stops blinking green and unplug it just to be on the safe side. Mine will blink yellow when full.

[@beaterboxgarage]

What batteries did you go with?

[@jofusm]

@@beaterboxgarage HAYAEnergy 12V 100Ah Lithium Battery, Rechargeable LiFePO4 Battery with Built-in 100A BMS Board, 5000+ Deep Cycles

[@AgentOrange90]

@@jofusm what was involved with switching to lithium? my mower has the same issue right now so trying to figure out what to do

[@curly437]

That gauge never works correctly on these things

[@beaterboxgarage]

Does seem very inaccurate

[@eldave2442]

Ryobi RM480e is a very expensive piece of junk. One of my worst purchases ever. When I complained to Ryobi that my 3.5K dollar mower needed 1K dollar of batteries and service I was offered a free seat (the one that came with the new mower got a cut after just a couple of month from a little stick I drove by). I was also told that on average, even if they claim batteries can last up to 7 years, they usually need replacement every 2 -3 years. That is ridicules. So, after spending 3.5K to purchase the machine, every year you should spend 1K to just keep it running. What a piece garbage of a product. I had the same experience that the previous owner in the video. I mowed for 2 years (summers only) then I was able to use the mower just to pull stuff around for the start of the third year)

[@beaterboxgarage]

Yeah. If it’s not lithium it’s not worth the purchase that’s for sure.

[@gs1100ed]

There is a reason why this mower was so cheap

[@beaterboxgarage]

electric mowers in general using non lithium batteries are had for cheap now :)

[@es-er9qy]

These batteries make this lawnmower useless. I have a 300 and need a 2nd set of 4 batteries after I bought the mower in 2021, the batteries last barely 12 months. The mower is used year round, so the story about winter storage being a problem is not the issue. The first set was replaced under warranty, the 2nd set I need to pay out of pocket, and with the 3 year extended warranty you get 50% reimbursed. But the insurance only pays a max $500 for batteries. A $350 warranty for a max. $500 cover. Means I am on my own in the third year, and then this mower becomes completely uneconomical garbage. Does anybody have experience with lithium replacement batteries for the ryobi mowers?

[@beaterboxgarage]

That sucks to hear. I think I may be onto something with the 48v charger having a flaw, you know the one that says "leave plugged in when not in use". I don't think it charges correctly. Video coming soon.

[@es-er9qy]

@@beaterboxgarage the first set of batteries I could not charge with a regular charger, they were definitely gone. The second set, when I use a regular charger to charge the batteries individually, the charge status goes to green, and also the mower display shows fully charged, though it also showed fully charged status after using the ryobi charger. But after charging the batterie for 24h and status green, the mover stops after 30 seconds of light usage, no mowing. And I am waiting now a month for Home Depot restock the batteries.

[@JohnDoe-ky8vz]

@@beaterboxgarage I suspect that must be the problem I'm having if the voltages are still showing as 13 13.2 13 and 13.2. I was also thinking that perhaps the sensor off of the rear could be problematic too, but I think it makes the most sense that the charger is the problem. Have you had any luck contacting Ryobi about the charger?

[@willwarro4054]

160 bucks a battery for 4= 640 for a midget mower what's the cost for a 46-50 inch riding mower. $3200 for a new 30 in riding mower bought for 200 bucks. sounds like the 2024 chevy 4wd quad cab with 100 miles i just bought for 200 bucks. and that's the trump truth.

[@beaterboxgarage]

ok...

[@eldave2442]

Ryobi RM480e is a very expensive piece of junk. One of my worst purchases ever.

[@beaterboxgarage]

The battery setup was horrible. Lithium is the way to go.

[@kylelucas2203]

They aren’t car batteries.

[@beaterboxgarage]

You could use "car" batteries if you wanted to. The difference is the terminals (bolted vs clamped).

[@1gizmospot]

Dude don't waist money on led acid batteries. Buy 48v LFP lithium and a new lithium battery charger.

[@beaterboxgarage]

How much does that cost?

[@BFArch0n]

$200 wtf!?!?!?!?!

[@beaterboxgarage]

?

[@robcarter2891]

Get on with it. Could have done this in 1/2 the time. Too much talking 😢😢

[@beaterboxgarage]

Ok

[@rjazco51]

CAN'T PLEASE EVERYBODY... Great explanation KEEP UP the just what your doing . 😁😁😁

[@vinmat3558]

Really helpful! Thanks!

[@beaterboxgarage]

You're welcome!