In short, we have a 1-2 month old V5 battery that will not charge. When the power button was pressed, nothing happened. We thought the battery might have been completely flat, as it had sat unused and unplugged for the entirety of winter break, but after ~30 minutes of being plugged in, nothing had changed. The charging cable itself works, as we tested it using another V5 battery, which immediately started charging. At that point, we used a paperclip to press the reset button, and a quickly flashing red light lit up only one of the four power level lights. Nothing has happened since then, is there a way to fix this, and if so, how?