Cordless drill Batteries that discharge when sitting awhile.

[SideShow Bob]

We bought the name brand dewalt 20v adapters and batteries for all of our work kits.

Well worth the money.

The little 2AH lithium batteries have been lasting longer than the XRP 18V Nicads that we have.

That’s what I did also, name brand adaptor & 2 - 2 AH 20V, good to hear that the 2 AH Li-ions are lasting longer than the Ni-Cads did.
The old style 18V Chinese aftermarket battery was cheap enough to take a chance on, so I thought I would give it a try, it is supposed to be rated 5 AH. We will see how that one turns out.

[Grant H.]

That’s what I did also, name brand adaptor & 2 - 2 AH 20V, good to hear that the 2 AH Li-ions are lasting longer than the Ni-Cads did.
The old style 18V Chinese aftermarket battery was cheap enough to take a chance on, so I thought I would give it a try, it is supposed to be rated 5 AH. We will see how that one turns out.

We have a handful of the China Nicads, and they worked pretty well for a while (6 months???) but then started to fail pretty quick.

One note on the adapters and lithiums, don't leave the batteries in the adapters. The adapters actively "buck" the voltage down for the 18v tools, and will drain the batteries.

One of our Dewalt adapters had a few of the cast plastic fins near the terminals that were too thick. A little quick whittling of those with a razor knife, and it fits into/out of tools much better.