The included manual explains everything you need simple and clear. Only what is known as "pink" LED is referred to, is a red LED.
Charged, the battery using the supplied cable or just any. Mini USB in Battery, Normal USB in PC or charging cable of the mobile phone. During charging, a red LED which goes out after lights when the battery then "runterfaehrt". Have the battery overnight loaded (approx 8 hours) and the morning was the LED is off, a cool, fully. Go next leg (supervised) it remained cold, and switched off automatically after approx 4h unload.
My cell phone with a battery of 1650mAh he could fully load once. the second time was the battery plugged in at 50% in active use Wi-Fi, GPS and 3D application. normally then hold the phone about 1 to 1 1/4 hours, the battery pack is kept 3 1/2 hours and then the battery was at about 80% (of the battery pack was apparently already made, did that missed.) during the charging of the battery was always cold and warmed all any. From tablet it will not be recognized or not he offers famous on this, here the output voltage seems to be too low.
The connectors are also Stram, so that can not slip out, or the contact is lost.
Apart from the battery that looks visually chic and high quality, it is also still very small, smaller than I imagined it.