Local Seller - Bateri / Battery for K3 (also K8, ES-T03) Thermometer - UltraFire 18650 Battery li-ion 3.7V 4800 mAh - an

BRC BatteryOEM Rechargeable batteryGood QualityNote: This is not A or AA or AAA type of battery, this is specifically 18650 Li-ion rechargeable battery with rated voltage at 3.7V. Do not attempt to replace A type battery with it.