Gens Ace 2400mAh 7.4V RX 2S1P Lipo Battery Pack with JST-SYP PlugBatteries often look similar to each other But the difference is the chemical part inside. Tattu s batteries Chemie is specially developed for UAV requirements. Gens Ace is one of the top rank battery corporations with deep research and manufacturing on NIMH, LI PO, LI FE by the effort of 200 professional engineers and technicians with 20 years exquisite battery technology. The Gens Ace brand holds the traditional concept of "excellent quality",