Buy Conrad energy Scale model battery pack (LiPo) 11.1 V 4000 mAh No. of cells: 3 20 C Box hard case T socket | Conrad Electronic
Traxxas LIPO Akku 4000mAh 11.1V 3 Zellen 25C mit Traxxas iD Stecker TRX2849X ... | eBay
SLS LiPo Akku XTRON, 3S/4000mAh, 11.1V, 20C/40C, 145x43x23mm, 299g | Batteries, LiPo-equalizers and accessories for batteries | All you need for electric flight