Being a noob I have a frustating Futaba 2PL radio that eats batteries, so I was in Costco buying some "Dust Off" for me and the guys at the track and I saw this Sanyo "eneloop" rechargeable battery kit. 8 AA NiMH 1900 mah batts (just what the 2PL requires) and 4 AAA 750 mah batts (my Harmony remote) with a nice case (which will become my new 4 cell battery case) a charger and some adapters to make the AA's fit c and d cell applications. $25 bucks so I said what the hell.
It's pretty sweet . . .