3.7V 400mah Lipo battery 3.7 V 400 mah 30C 752035 For H31 Battery With USB charger ( Input 5V ) X4 H107 H31 Spare Parts 752035 - AliExpress
Amazon.com: KBT 3.7V 400mAh Li-Polymer Battery: 303040 Rechargeable Lithium-ion Batteries Replacement with 2.0 JST Connector for Car Dash Video Recorder, Digital Camera, Electric Toys, Headlamp, GPS Devices : Electronics
EBL TB-4A40 1.2V AAAA 400mAh Ni-MH Nickel Metal Hydride Rechargeable B – JG Superstore
Lithium Ion Polymer Battery Ideal For Feathers - 3.7V 400mAh : ID 3898 : $6.95 : Adafruit Industries, Unique & fun DIY electronics and kits
Fisca Spare Rechargeable 3.7V 400mAh Lithium Ion Battery with USB Charger, SM 2P Connector for RC Stunt Car : Amazon.in: Toys & Games
CALMO AAA USB Rechargeable Li-ion Battery(1.5V+400mAh)(Pack of 2)