My kindle is frozen. I have just a grey screen. Charging for more than 20 hours led to nothing. I tried to reset my Kindle the standard way. Then I made hard reset and even unplugged the battery. After unplugging and plugging the battery I charged kindle for a while. Still nothing.
When I connect kindle to power socket the LED light which indicates that kindle is charging turns on only for 5 seconds and then it turns off.
So, before buying a new battery, how can I ensure that the battery is the reason that my kindle does not work?