Just a short question, can i use my htc hero adapter with the galaxy s3? All of the properties of the adapters are the same, except i think with the htc adapter the input says 0.2 V and the s3 adapter says 0.15V. So is it safe to use with the battery? Also is it normal that i had the phone chargling for 8 houres and it only reached 99%? Or does it never even show 100%? Thanks.