Rechargeable batteries

[jmh21586]

What is the proper way of keeping rechargeable batteries for powertools?

I have all DeWalt tools in both 14v and 18v. Seems like they don't hold a charge long while in use and also go dead while not in use.
The 18V are almost new and they do it too.
Is ok to just leave them on the charger?
Do you leave them in the tool or take them out when not in use.

Just trying to figure out why my batteries aren't holding up like they should.

 

[MrMark]

Tough questions and no easy answers I'm afraid. One thing for sure is that you shouldn't leave them on the charger more than overnight. Milwaukee and Dewalt say to use the tool until the battery starts to lose power and then recharge. I have heard that some nicad like an occasional very deep discharge and then a charge to get rid of their "memory." It's basically a very confusing subject and you will never get a straight answer.

You can leave them on the tool; that doesn't matter. All batteries will go dead when not in use. The new li-ion do it at a lot slower rate than the nicad and that is probably their principal advantage along with lower weight.

 

[Gary S]

Over the years, I've read lots of books about how to take proper care of batteries. After extensive testing, I've found that batteries will die and be useless in 6-8 years no matter if you treat them like gold, or abuse them as much as you can.
Now, I mostly avoid anything with batteries in it, and the things I have with batteries get no care at all. I simply expect to replace them every 6-8 years.

 

[MrMark]

one thing batteries do like is regular use. It gets tough for people that have lots of battery tools but don't use them very often.