when i was in indiana i went to a place called battery plus i believe and bought a rayovac charger that can do individual cells can do AAA,AA,C,D and 9 volts. i also bought some of the store brand rechargeables he said they were actually rayovac with their name called nuon. seem to work ok so...
i just bought a two C from home cheapo a couple of months ago i think i got the last one though and I only paid like 5 bucks for it. I then purchased the fusion 36 led power module for it and it works great.
I use the vulcan led light as well as the stream light survivor light led and i also have on my helmet the foxfury 20 led helmet light that lights up the fireground. i love my led lights.
pd 20 is a great choice i have this light for when im doing my fire inspections because its small and can barely tell its on my belt. but beware of one thing i somehow turned it on by mistake on high in the holster and it got really really hot when i reached in to grab it i could barely hold it...