Originally Posted by geekmaster
So it seems that mixing kernel and partition versions may cause extra battery drain then. I do not know what mechanism can account for that. I am glad that it is working for you now.
It's very unlikely that doing "something wrong" (tm) with the diags kernel/partition would affect the battery when running in main. In fact, it's completely impossible IMO.
One could just as well wipe out the diags kernel and partition completely, or install Super Mario instead, or... well you see where I'm going - it just wouldn't affect the Kindle running in normal operation mode, because the normal mode doesn't touch anything "diags".