Lithium-Ion-Polymer (LiPo) packs are successors to the known Lithium-Ion (LiIon) packs. The basic advantage of LiPo is undoubtedly the ratio of capacity to size. The packs are of very small size whilst maintaining a very large electric efficiency, which allows for choosing an appropriate pack for practically every AEG replica. Do not feature memory effect. Can be charged very frequently, without the need to be fully discharged. Frequent charging is beneficial for every type of a battery.