The "125054 3.7V 4000mah" product is ideal for portable electronics that require a rechargeable battery with a voltage of 3.7V and a capacity of at least 4000mAh.
lipo pouch 3.7v cell, 4000mah 5050100 4000mah - BRAND NEW SEALED
(4000mAh 60C)ZOP POWER 4S 14.8V 4000mAh 60C Rechargeable LiPo Battery LW
4000mAh Green 217/00 Compatible With Fogstar Energy Works With Sub Ohm Kit + Band No Nicotine (2 Pack)
Tamiya Style Lipo Battery 7.4V 2S, 4000mAh 80C + Deans adaptor For Tamiya Model
Tamiya Battery Upgrade Lipo. 7.4V 2S, 4000mAh 80C + USB Charger. long 2X Runtime
Tamiya Style Lipo Battery 7.4V 2S, 4000mAh 80C Rechargable Lipo For Tamiya Model