As for the battery running hot I have been looking into a high capacity battery but I noticed that a number of companies that sell batteries instruct the user that battery will need a number of full charges to reach full charge capacity and the batteries are known to become warm during this cycle.... I just figured I would point this out because after I took that in consideration I noticed my battery life started to improve... Now I do now that batteries do not usually have to go through the drain/fill stages before battery hold charge better but it did seem to make a diffrence to allow to drain about half way and charge instead of keeping it on full