I have gone through at least four rechargeable drills and drivers, all with removeable batteries. Each combo was replaced by a newer model, and all because the batteries refused to take a charge (after several hundred cycles).
Ah! Thanks for the reply. I have had same results with the drill batteries but never disassembled the batteries and my drills are for hobby use only so, while subjected to some abuse (overload) not normally the case. Have gone through three ****** (supposedly top of the line) drills for that reason. (Batteries always dead after sitting idle a week or more). It was cheaper to buy the drill set(s) on sale than to replace the batteries. I finally gave up on the ******'s and bought a cheap drill at Harbor Freight and so far it holds a charge much better than the others.
My earlier comments were for individual AA AND AAA batteries and the charger I use is more sophisticated than those sold with rechargeable batteries, so that is probably why none have leaked. Also these batteries are not subjected to the severe use of a power tool.
Regards,
hps