The most common reason for this to occur is because the battery is done. The life of a battery was never designed to last for a long time, so there is a high chance that the battery needs to be replaced. A guide to the replacement of the battery can be found [guide|37359|here.]
This could also be related to another problem with the device.
Be sure to check out the [[Trio Stealth G2 Hype Troubleshooting|Troubleshooting page]] for more information.