Note to Fraks Rezesion ...

When charging a battery pack creates thermal dissipation, ie "lost" energy, which is released in the form of heat. This is my info after about 25-35%. In addition, usually can not be used the full, given battery capacity. Intermediate charging electronic consumes one more time a little bit, so you can fill the battery of the terminal probably only about 800-1100 mAh with this charger (depending on configuration). This is due to technical reasons normal and no reduction in quality. This relatively high power dissipation during the battery charge is also the reason that electric power is primarily cached in a big way in pumped storage hydro power plants and not in battery.