LiPo 11.1V 1000mAh 20C Valken Energy Stick battery pack

LiPo 7.4V 1200mAh 20C Valken Energy Stick Battery Pack

Lithium-ion polymer (LiPo) batteries are the successors to the well-known lithium-ion (LiIon) Batteries. The fundamental advantage of LiPo is undoubtedly the ratio of capacity to size. The batteries are very small and at the same time have a very high electrical efficiency, so that a suitable battery can be selected for practically any AEG replica. They have no memory effect. They can be recharged very frequently without having to be fully discharged. Frequent charging is an advantage for every battery type.

It is important to have a LiPo-pack does not open less than 3 V per cell to discharge and not over 4.2 V per cell to overload. Another advantage of LiPopacks is the low self-discharge. An unused battery pack loses around 3 to 5 % of its energy per month. It is important to take care of an unused battery pack, as there is a risk that it will be discharged below the minimum permissible value (3 V per cell) if it is not used for a longer period of time and unintentional chemical reactions may occur, which can lead to a deterioration in the properties of the battery, including permanent damage and, in extreme cases, fire. An unused LiPo-pack should be charged to 70% on average.

A LiPo-pack has an average service life of 500 - 700 cycles when used properly. An important factor is the temperature at which LiPo-batteries can work. In contrast to other batteries LiPo-cells work well at low temperatures. To maintain the good condition of LiPo Batteries it is necessary to equalise them during charging with a service connection, which is available on most LiPo-packs (a good LiPocharger has a built-in balancer).

Use of Li-Po batteries (PDF)