Varta V625U/PX625A Electronic Alkaline 1.5V Battery for Cameras/MP3 Player and Game Boy (Blue/Silver) : Amazon.ca: Electronics
NSN 6135-00-299-6918 replacement battery pack
3.7v 1750mah 653569 Lithium Polymer Li Lipo Battery For Gps Bluetooth Speaker Led Light Dashcam Phone Driving Recorder Tablet Pc - Rechargeable Batteries - AliExpress