I recently completed my first saber. i was extremely stoked; it worked beautifully until i went to charge it up. I used a Li-Ion 18560 3.7v 2600mAh cell to power the saber and, without paying proper attention, plugged it into a 2.4v-7.2v NiMH/NiCD charger. i only had it on there for a short while. now the speaker faintly cracks and hisses, and the momentary LED and blade LED will only stay on for about a minute before shutting down.
Did i do permanent and irreversible damage to:
1) the NB board
2) the speaker
3) the blade LED (luxeon rebal star blue)?

any help would be greatly appreciated.