Just to ensure that the battery is working properly. After charging for almost an 1.5 hours. I have unplugped it from charging adapter. Then turn the switch of the battery on, but it doesn't show any light on the swith at all. Does this mean the battery is dead?
Note: - The temperature of the battery's surface is still the same not even warmmer at all.
- The shape of the battery is very weird. There is a little curve at the middle as you can see from the picture. It doesn't well align with the edge of the paper.