Optional LiPo battery for the SANWA M17 radio. 6000mah compared to the standard 2500mah supplied in the radio. 6000mAh 1S RX Connector 12*46.8*77.5mm 94gIntellect TX Battery For Sanwa M17 6000MAH 3.7V SKU: IP584674-1S2P£25.99PriceAdd to CartBuy Now