3.7V 250mah Flight Battery for Traxxas QR-1 Hubsan X4 U816 U816A Quadcopters
Price 4.50 - 4.99 USD
3.7 volt 250mah Quadcopter Replacement Battery * Works well with Traxxas QR-1 UDI816 UDI816A Hubsan X4 * Extends flight time in the Traxxas QR-1 and Hubsan X4