This might be true. But I have a lot of lithium battery tools Ex.. Ryobi, DeWalt, Makita, and Rigid. When using them my battery gets hot when it's drained. I replaced with a charged one and try and charged the hot battery and sometimes it will start charging and other times it won't. So since then I just let them cool off them placed them in charger. Will this be something to look out for on Lithium Ion Battery rechargeable buffer?