I've been having a problem with my batteries where I plug them in and LED 1 will just flash and then the batterty will turn off. On both batteries the only thing I can do is turn them on and LED 1 just flashes then the battery will turn off.

I would recommend you to use the original charger to charge the battery for a certain time. Then press the power button once and hold on for 2 seconds to see whether it works.