Amazon.com: HyperPS (4-Pack) 3.2V LiFePo4 14430 4/5 AA (14 x 43mm) 400mAh Rechargeable Battery for Solar Panel Light, Tooth Brush, Shaver, Flashlight with a Battery Carry case : Patio, Lawn & Garden
3.7V Lithium ion Rechargeable Battery, 3800mAh 18650 With Replacement Socket And SM Interface Line for Emergency Lighting - AliExpress
Amazon.com: SPANN Battery Replacement for Tomtom 4FB40, Go 400 4.3" Satnav, Part No: ICP523436 3.7V : Electronics