Streak
Enlightened
Seeing that there seems to be a lot of experimenting with LiIon cells, I thought I would share today's experience with you.
I opened up an old laptop battery. Out of the 10 cells in the pack only 2 showed any voltage, all the rest showed 0.0v. Their internal fuse must have fused.
The 2 good ones I charged up using a homemade charger. I then took one of them and ran it direclty into a high flux led. The LED drew about 500ma and I monitored the battery voltage from about 4 to about 3.6v over a 10 minute period.
As I removed the tester to check the current again, I heard a small pop, the LED went out and the battery showed 0 volts.
It's possible that I may have moved some wires and caused a short. I guess the internal fuse in this cell also went open circuit.
I dont think it was the high current draw that caused the trip.
I opened up an old laptop battery. Out of the 10 cells in the pack only 2 showed any voltage, all the rest showed 0.0v. Their internal fuse must have fused.
The 2 good ones I charged up using a homemade charger. I then took one of them and ran it direclty into a high flux led. The LED drew about 500ma and I monitored the battery voltage from about 4 to about 3.6v over a 10 minute period.
As I removed the tester to check the current again, I heard a small pop, the LED went out and the battery showed 0 volts.
It's possible that I may have moved some wires and caused a short. I guess the internal fuse in this cell also went open circuit.
I dont think it was the high current draw that caused the trip.