The Hyperion G5 Radio & Receiver packs are an excellent alternative for your Nitro model aircrafts and radios operating on 8xAA cells. Now enjoy extended flight time on a single charge and say goodbye to old technology, adapt environment friendly LifePO4 cells! If you are the one that hates or forgets to charge your Nicd/Nimh batteries, the Hyperion G5 Receiver Pack with LifePO4 technology has come to your rescue! Finally a replacement to heavy and bulky Nicd/Nimh battery packs, most commonly used in all Rc equipment today. Switch to a better and safe technology LifePO4 battery with (3.3V/cell) an excellent replacement for NiMH on voltage basis. In addition, the LiFe chemistry is not subject to "thermal runaway" fires, which can occur when overcharged, a safer alternative to Lipo. LiFe cells can be stored in a fully charged state, and discharged deeper, without damage to the cells. So they are more "rugged" than LiPo, safer, more convenient and a better choice overall.