Battery Pop or Spark

Batteries Pop or Spark

This can also happen if the batteries have been sitting a while, It is mainly caused by a voltage imbalance between cells. 

 If this happens, it is important to make sure the battery is still healthy enough to be used:

1. To test the battery, we need to make sure all cells are within 2.0 volts of each other. Plug the battery into the charger, and make sure the Balance Port is plugged in, too.
2. Begin charging in Balance Mode (battery instructions can be found here). Once charging, the front display will show the number of cells being charged, as well as their rate of charge and battery voltage.
3. Once the charging has begun, you can press the INC (increase) button to monitor the voltages of each cell. If the numbers are out of balance by more than 2.0 volts between cells, this means the battery should be safely disconnected by pressing the Batt type/Stop button and unplugging the battery.
4. If the voltages are within the 2.0 threshold, then the battery is just out of balance, but still usable once corrected. If the battery is stuck toward the end of its charge cycle, you can stop the charge, unplug the battery, and try again after an hour or longer.
5. Attempt to charge the battery in Balance mode again. Normal charging should resume.