Great tutorial. I plan to rebuild mine after seeing this video. One question : why did you tin solder the nickel plates on the shield using instead of spot soldering ?
Bottom half of 36v battery shell with terminals fixed in place + piece of acrylic over the top + 18v usb battery adapters on the top of the acrylic plate + wire it up/fix everything in place, slot in 2 * 18v batts into the usb adapters and no need to suffer when the rebuild fails. Alternative would be to not mount the 18v batts on top of the acrylic plate and instead run a cable from the batt in series to the ryobi battery casing with terminating connections.
36V consists 20 batteries, nominal 3.6V. Is it 10s2p pack? Is that why there are 10 spots where you desoldered/resolderd the balance charge leads on the BMS? Very skilled and nice rebuild video. Thank you !
These days (2022) it's cheaper and easier to just buy a genuine Ryobi replacement. I calculated that the cost of (decent quality) cells along would come to almost AU$270, then add the times and hassle to do the job. You can get a brand new genuine Ryobi 36V 4.0Ah pack for less than 250 bucks...
This video skips the hard parts; de-soldering the bms board tabs and then removing the board is diabolical as is the reattachment, aligning the tabs to fit is nicely skipped as well. Add another hour or two to this and you'll be closer.
@@Rockyjeeper from my experience ,due to high taxation by government on foreign imports choice on product brand range is limited in Thailand across the board from import cars to import foods . The gov wants to protect Thai industry which is fair enough. Unless Ryobi are made in Thailand factory or Ryobi has special exceptions from gov any Ryobi drill found there would have been a jewel in the hand. If you know of a store that sells them at reasonable price I'd like to buy one.
I fried the four surface mount resisters that go to the battery level indicator. If you could give me the numbers on them parts they technically should be the same number. Thanks it will save me from taking another battery apart.
@@yousun2827 there are 4 surface mounted resistors that go to the little curcuit board that has the led lights on for the battery level. The resistors are before the ribbon cable plug. I was going to try to blow up a photo of one someone took apart but I doubt I could read them small numbers.
It's OK I got the values off the good battery. I bought a set of security bits, now i.can reuse the old screws. The other part is on order. Thanks and I hope to help another that has similar problems.
@@yousun2827 well same happens with laptop some laptop batteries . After rebuilding some voltage but no current. It was working before opening . And I still can charge it but no output on attached load
Ryobi BPL3626 I have rebuilt 10 pieces. no problem. The laptop battery has a lock function. I have also rebuilt the laptop battery. ruclips.net/video/_WcXRyJBq7E/видео.html
@@yousun2827 Thanks for replying to my question. Okay makes sense. Then for sure the 4.0 will not fit the 2.0 case. Though would the 2.0 or 3.0 fit the 4.0 case?
Thank you very much for the video. Seems like a lot of work, I won't be doing mine after all :)
Great tutorial. I plan to rebuild mine after seeing this video. One question : why did you tin solder the nickel plates on the shield using instead of spot soldering ?
I love how EVERY tool is SOLID (very conductive) METAL, while shockingly close to electricity!
36 volts
Отличная работа!
Спасибо за видео: почерпнул много нужного!
Bottom half of 36v battery shell with terminals fixed in place + piece of acrylic over the top + 18v usb battery adapters on the top of the acrylic plate + wire it up/fix everything in place, slot in 2 * 18v batts into the usb adapters and no need to suffer when the rebuild fails.
Alternative would be to not mount the 18v batts on top of the acrylic plate and instead run a cable from the batt in series to the ryobi battery casing with terminating connections.
36V consists 20 batteries, nominal 3.6V. Is it 10s2p pack? Is that why there are 10 spots where you desoldered/resolderd the balance charge leads on the BMS? Very skilled and nice rebuild video. Thank you !
Yes! 10s2p pack.
Would it be possible for the BMS to handle the Capacity if I would increase it to 10s4p? It is still 36v :) what do to think?
@@banzonGreat yes. Parallel increases the capacity. Series maintains 36V. The bms will see parallel pair as one
These days (2022) it's cheaper and easier to just buy a genuine Ryobi replacement. I calculated that the cost of (decent quality) cells along would come to almost AU$270, then add the times and hassle to do the job. You can get a brand new genuine Ryobi 36V 4.0Ah pack for less than 250 bucks...
You can find quality 18650, 21700 cells for less than $1 per cell at batteryhookup. The tricky part is repacking the battery.
How did you remove the BMS (motherboard)? I can't get it off. Not sure I removed all of the solder joints. Please help. Thanks
I have a similar problem. between CL - and CL 10 I have 36V ... and at the pin output I have 18V ... what is it? Mosfet wines?
You can use a multimeter to measure whether the MOSFET G S has voltage or whether it is short-circuited.
Perfect! What soldering iron did you use, do you have a link for me?
The desoldering took a lot longer and I end up poping something so I stopped.
What temp did you have your iron at?
This video skips the hard parts; de-soldering the bms board tabs and then removing the board is diabolical as is the reattachment, aligning the tabs to fit is nicely skipped as well. Add another hour or two to this and you'll be closer.
Thanks, thinking of rebuilding with Samsung INR 18650-30Q.. that would give 6Ah. :)
Good
Two reasons I believe this is made in Bangkok! 1. all the mopeds you hear in the background, 2. His Long ass finger nails.
I have not seen Ryobi brand in thailand.
@@Swenser You can get anything in Thailand.
@@Rockyjeeper from my experience ,due to high taxation by government on foreign imports choice on product brand range is limited in Thailand across the board from import cars to import foods . The gov wants to protect Thai industry which is fair enough. Unless Ryobi are made in Thailand factory or Ryobi has special exceptions from gov any Ryobi drill found there would have been a jewel in the hand. If you know of a store that sells them at reasonable price I'd like to buy one.
living in the middle of the road?
So... what was wrong with the pack to start from. And why all those steps...??
The reconstruction process is nothing special.
I fried the four surface mount resisters that go to the battery level indicator. If you could give me the numbers on them parts they technically should be the same number. Thanks it will save me from taking another battery apart.
I don't understand what you need? Can you be specific?
@@yousun2827 there are 4 surface mounted resistors that go to the little curcuit board that has the led lights on for the battery level. The resistors are before the ribbon cable plug. I was going to try to blow up a photo of one someone took apart but I doubt I could read them small numbers.
It's OK I got the values off the good battery. I bought a set of security bits, now i.can reuse the old screws. The other part is on order. Thanks and I hope to help another that has similar problems.
Great video!
Can I buy you some nail clippers? :)
No! Thanks!
Good response. Don't let these weirdos get to you.
Maybe he plays guitar. Guitarists leave their nails long.
Maybe he's a she
It doesn't work after rebuilding .BMS locks up and shows 16v. So it probably doesn't work as in shown in video
No, your BMS has a problem, I have rebuilt a lot. This BMS does not have a lock function. The lock function has no output voltage.
@@yousun2827 well same happens with laptop some laptop batteries . After rebuilding some voltage but no current. It was working before opening . And I still can charge it but no output on attached load
Ryobi BPL3626 I have rebuilt 10 pieces. no problem. The laptop battery has a lock function. I have also rebuilt the laptop battery.
ruclips.net/video/_WcXRyJBq7E/видео.html
There is an n channel mosfet mounted on a heatsink if that is bad you won't get 40 volts.
Does the 2.0ah, 3.0ah and 4.0ah shared the same case? Or are they different, not interchangeable?
Different capacity, different shell.
@@yousun2827 Thanks for replying to my question.
Okay makes sense. Then for sure the 4.0 will not fit the 2.0 case. Though would the 2.0 or 3.0 fit the 4.0 case?
Yes!
What about that de-solder tool? Is that available on the www with shipping to the U.S.?
Yes!
@@yousun2827 I've never seen one like that. Do you have a link to the web site? Thanks
Recommend this, more powerful suction.
www.yousun.org/product/goot-gs-100-desoldering-pump
Just a standard solder sucker
where did you get your spot welder?
DIY ruclips.net/video/4XJmQTgkeGc/видео.html
any chance you can do a rebuild on newer ryobi 40v?
Yes!
@@yousun2827 Thanks, I can send you my dead 40v/36v. 4ah. the guy speaking cantonese at the back?
Which country are you in?
@@yousun2827 canada
I am in China and it is a bit difficult to rebuild overseas.
sd card ftw 😁
shift house..too noisy there
Can I do voice overs for you . I hate non speaking videos :)
Thanks!
Wow, hardly worth the trouble.