Has anyone tried to upgrade thier battery? I love my Epad, it works great, runs apps fast, runs the web fast, but the battery life is horrible. I have seen other people have posted changing or upgrading the battery for other devices on here, but has anyone tried on thier flytouch/epad? If anyone has or can help with what type of battery would be better, please post something. If I get enough information I would do this myself and post some pictures.