It is backed by a 3,000 mAh battery with fast charging support that might give more than a day of usage. (phoneradar.com)
The G Flex 2 packs with a 3,000 mAh battery which supports Fast Charge feature to offer users up to 50 percent charge under 40 minutes span. (techone3.in)
The Mate, though, especially impressed me with its ridiculously fast charging which fills up the 4,000 mAh battery in what feels like minutes. (9to5google.com)