QUOTE(sentlon @ Oct 19 2014, 11:28 PM)
hows is the fast charging work?
do it really charge faster then normal phone?
my best experienced is OPPO 7.
do note 4 as fast as oppo 7 ?
Oppo's VOOC is proprietary to them. From what I understand, they have multiple cells in 1 battery, which gets charged by the 8 pins in the charger separately, which is why it charges very fast, ie in parallel. Nice engineering.
Samsung's seems to be taking a brute force approach, perhaps Qualcomm's is the same, where they raise the voltage and push it thru the battery faster.
As such, the new battery is 3.85V default, up to 4.4V. This is a new chemistry.
Do not use fake or compatible batteries with the Samsung fast charger.