Buy Dilwe 2PCS RC Lipo Battery, 3.7V 450mah RC Helicopter Battery Upgrade Replacement Accessories for WLtoys XK K110 V977 RC 3D 6CH Helicopter Online in Saint Helena, Ascension and Tristan da Cunha.
Warning: it's time to replace the helicopter battery - Ampow Blog
HSP Himoto 800 mAh 3.7 V Battery for RC Helicopter Hughes MD500 3319b, Replacement Part, Heli, Model Construction, Also Suitable for Various Tanks, Vehicles, Drones and Boats: Amazon.de: Toys & Games
anshikapower 3.7 V 1100 mAh LiPo Rechargable For RC Helicopter, Bluetooth, DIY Battery - anshikapower : Flipkart.com