- http://toolboyworld.com/eBay/Ryobi_Batteries.htm - Great site that talks about power and compares different models of the 18v batteries. This is also where I learned for fact what I already suspected. the Lithium Ion batteries require a dual-chemistry charger, and cannot be charged with the NiCad charger, but you can charge the NiCad batteries with the dual-chemistry charger.
I'm trying to get a similar price to this deal posted on slickdeals.net - http://slickdeals.net/f/4749842-18V-Ryobi-ONE-Lithium-Ion-Battery-2-pack-69-Home-Depot-B-M
But wondering if I can find a combo deal that includes a charger, as I'll need the new charger for the Lithium Ion batteries.