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...
@@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?
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. ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-_WcXRyJBq7E.html