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Ryobi 18 volt battery wont charge

Have the standard ryobi 18 volt tool set, 3 of the 4 batteries wont take a charge any more. I have read some ways to bring the battery back to life. Is there a safe way to do this?

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  • Anonymous Mar 29, 2009

    fairly new ryobi batteries 18 volt wont charge hardly used

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  • 78 Answers

No its best just to replace them

Posted on Jan 05, 2009

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Many batteries have the "memory effect" which means that if the battery was not completely empty when it was set to recharge it might now only recharge to the level it was emptied to, so for instance if you used the power tool for 10 mins and the battery emptied to, lets say, 90% capacity, it might occure that the next time you recharge the battery it will only charge to it's 90% maximum...doing that many times lowers the maximum recharge capacity. As I heard the new Li-Ion batteries do not have this problem.
I hope this makes some sence as my english is not that good and it was a bit hard explaining my thoughts:)

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