40v Ryobi Battery Defective?! Let's Fix it!

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By boosting the dead battery voltage above 34 volts the Ryobi charger will again recognize the battery and charge it normally. If you keep the battery from completely discharging, it shouldn't happen again. Always store these batteries at 3/4th capacity for best shelf life. This will only work on the OLDER Ryobi 40volt design batteries. Here's what I used to fix the battery it:


Boost Step Up Converter (Multiple Options):
https://amzn.to/3ePAKYq (Heavy Duty, Higher Voltage)

https://amzn.to/3issznk (Smaller and Cheaper, Stops at 35volts)

12volt 5amp Power Adapter:
https://amzn.to/2qBF2eH

Tool kit used for most my repairs:
https://amzn.to/2DyIvTL

Great eBay seller that has MANY of these batteries:
https://www.ebay.com/usr/brokeredgar760

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Just be aware that these 18650 lithium cells can be dangerous. Do not short circuit the battery for risk of fire. Always boost the battery with low current to avoid damaging the cells. Once the battery is around 35 to 36 volts, the Ryobi charger should finish the job. This video is for instructional purposes only, I take no responsibility for your actions.

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