RE: b400 lipo no good anymore?!?!
Mine did that when I first got it. I let the battery sit overnight and tried again and it charged. Then it started taking like five hours to charge a bat. I tested the charger output and it was starting at 1.5 amps, but then switching to trickle after abut ten minutes. Finally I brought it back to my LHS who exchanged it. The new one seems to work ok, but I bought a Venom LiPo charger/balancer and what a difference. It charges the 1800 ma bat in 50 minutes! It charges a 800ma bat in about 25 minutes and you can charge a 3C and a 2C at the same time. If you continue to have problems, I would try using another charger on the bat.