I just changed my battery last night. Woke up still had to wait for the battery to get to 10% and charged it uninterrupted until 100%. I have tested it by using it to play two songs on Bluetooth in my car and at my blood donation. It has decreased to 88% in 1hour, not as bad as my last battery (which could shut off at 30%) but is this ok I figured the battery would discharge slower!