Xvive BU2 Rechargeable Battery for U2 System

Lithium polymer replacement battery for Xvive U2 wireless system, carefully tested special batteries from Xvive precision control circuit to ensure charging safety. DIY kit for easy battery replacement. 2 x lithium polymer batteries for transmitter and receiver. 1 x screwdriver. 2 x plug cuffs for U2 transmitter and receiver. 2 x double-sided adhesive tape. Transmitter battery: 650 mAh, 3.7 V, 2.4 Wh. Receiver battery: 650mAh, 3.7V, 2.4Wh