I forgot to unplug battery from car receiver until I discover it one month later, which is last night.
My LiFe 1400mah is swollen. One cell is swollen pretty big. The battery is also dead with 0 volts reading. It wont take any charge under LiFe or LiPo charging mode.
So I decided to play with it before I finally throw it away......
I give a charge Ni-Mh mode at 1.4A , and the battery accept the charging process. I can see the voltage is going up from 0.0v to 2.4v, 2.5v, and so on.
I keep charging it untill 15 minutes later, I switched to LiFe mode with balancer cable on. The charger keeps charging the battery for sometime , however I decided to stop it and be smart rather than sorry. ( I'm worried the battery might explode / catch fire when battery is reaching its peak ).
What cause it to swollen ?
I have one spare battery fully charged ( before storing ) and yet, it is still get swollen.