mws_1984 Posted August 10, 2014 Report Share Posted August 10, 2014 I have a set of 18 volt DeWalt batteries DC9099 to be exact, came with a combo kit of drill driver, flashlight and sawz all. Well I charge them weekly for use. They take an hour to charge I believe. Well I notice one of them is weak, you can definitely tell by use just from listening to how the tool works. I've used both batteries and you can tell which one is the strong battery and which is weak. Have to mark them so I know. Could this be from charging them too much or do these batteries just slowly kill themselves? Yesterday needed to use them and even after charging them both in the morning. Good one stayed fine, but other one I ended up having to charge it again, got it up to charged and it still was weak. Is this just a battery going south or what? Quote Link to comment Share on other sites More sharing options...
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.