Gnd 3.85v 3000mah/11.55wh Qk-393 Replacement Battery For 360 N4/1503-m02/1503-a01 Built-in Li-ion Bateria Li-polymer Batterie - Mobile Phone Batteries - AliExpress
Amazon.com: Duracell 309/393 Silver Oxide Button Battery, 1 Count Pack, 309/ 393 1.5 Volt Battery, Long-Lasting for Watches, Medical Devices, Calculators, and More : Health & Household