Cordless drill Batteries that discharge when sitting awhile.

[brutal]

Thanks mb504,
This looks to be the all round best deal, this way I can still use all of the original set tools and still upgrade to the LiOn 20 V batteries.
Granted, over time this will burn out the tools (more voltage and amperage) but by that time hopefully they will have perfected the battery size portable hydrogen fuel cell tools.

https://www.toolbarn.com/dewalt-dca2203c.html/

?

I'm not seeing that. The link shows 18V Li-Ion battery - it also requires new charger.

There's a dual ported charge stand that does all the 7.2V-18V batteries. https://www.amazon.com/dp/B000X1S11Q...4c8d3b0a76a60b

Should you move into any of the 20V tools, there's also a cobo dual port that does either. https://www.dewalt.com/products/acce...charger/dcb103

Hell, they now even have a 20V battery - 18V tool adapter. https://www.dewalt.com/products/acce...tools/dca2203c