I recently downloaded Android Assistant as someone from this forum suggested. I think its cool that you can monitor battery temp and voltage. But can someone explain to me what the voltage should be. My phone is at about 50% and charging and it shows 4045mV...is this normal? On something off topic. I see some people mentioning that they have brought their phone to a samsung center to check it if they feel the battery is draining to quick. Can we do this if we are in the US or is this just for people oversees?