well buxz777, that's not what I've experienced with this phone (or anything lithium-ion/nickel for that matter), my girlfriend's father got the S5 also and would always put it on the charger with more than half battery and noticed his battery was dying very quickly. Now that he let's his phone die, he gets about the same amount of battery life as I do. Even though it's on Google, it's more about experience with it and I've dealt a lot with wasteful batteries. Plus batteries can always be very fussy, extremely fussy. Batteries can work well for you or they can be a huge pain in the a$$. They only like certain things xD haha I'm gunna have to test that theory again though hahaha But barryb36, the best advice is toy with the device and the power settings to get the battery life you're looking for.