Official response from HTC RE: How to double battery Life (WORKS!) + 2nd Reply - xda-developers I followed the guide above to see if it made any difference to my battery life. So far it seems to have lasted a little longer under the strain of its usual use. Has anybody else followed the above guide? What were their thoughts? Also, I assume this is just a one-off thing? As it's a lot of messing around to do every time you charge it!