100% agreed with Gary. NiCd work fine with wall wart slow chargers, but a peak charger, especially one with a cycler, can actually tell you how good your batteries are. The vast majority of NiCd/Nimh failures occur slowly, so regular cycling will let you catch a bad pack before it costs you a plane. With so many people going to the big Lipo's now and wanting internal balancing, a 50 watt charger/cycler can be had for under $40 used. It's the best piece of support equipment you'll ever buy and will save you much more in the long run that it costs you.