dragonfly batteries don't work!

i have got a dragonfly r/c heli. the batteries i got with it don't have much power at all. i think i have wrecked them by over charging them (supposed to be charged for 2 hours and i keep charging them for 2 and a half hours). they are really hot after charging. can you really wreck them like this?

[Daz(DJLFlapper)]

Sounds to me like your charger may be over charging them. The fact that your battery pack is getting hot says that somthing is wrong somwhere.

It is easy to burn out a battery pack if it is fast charged to agressively, If it is then left on charge too long that is a sure way to spoil the pack. I would only ever recommend slow charging packs unless you have got time to devote to them whilst they are on charge.

just as well this wasn't a case of you charging li io/pol batteries cause they can and do catch fire if overcharged.

Here is a link that will help you learn more about care for your batteries, Please read it, It is very usefull to know this information.
http://www.rcbatteryclinic.com/

Regards
Darren,