3.7V Battery-3.7V 500mah Battery with 51005 Air-to-air Plug-752540P,Size:42X25X7.5mm,Weight:14.7g
Full 6 Pack + Charger - LiPo Small Drone Battery 3.7V 500mAh 20C - Ships from US | eBay
Buy Wholesale China 502035 500mah 3.7v Lithium Polymer Ion Battery For Titanate Hard Case Drone Enrich Power Rechargeable Li Po Battery & Lithium Polymer Battery at USD 2.95 | Global Sources