This battery will be going in a 9C. I have an Ace Hobbies DDVC charger that I use. It is a variable rate charger that you set and it charges at a constant rate until you turn it off. It will put out 500ma so it will charge a 5000mah battery @ C/10. My old battery was a NIMH that I charged overnight and I burnt it up. I was under the impression that C/10 was a safe rate for overnight charging. Turns out it isn't.

Mteal