just had a look at your images.. i see what you did it in a different way... in my (original) firmware the levels are from 1 (full) to 9 (empty) .. you made your images from 1 (empty) to 9 (full) .. vice versa.. as you mentioned. therefore when the player should show level 1 (full) it shows the empty battery in my case and the full one in your case.. the problem now is that according to the orignial setup it should show the full battery with level 1... your player now shows the full battery with level 9.. i know its a bit confusing.. but the firmware seems to mess this up when you change the battery images..
i could put my images in there backwards.. but this would be a bit strange since this would be the opposite of the original setup of my player.. hmm ..
i'll let my player play a video now nonstop.. if its only a matter of the image order then my battery level indicator should become fuller after same time