Note the battery is taller than normal so that it will be compatible with flashlight Size: 67.35mm*26.15mm (diameter) Battery Item specifics : Brand Name: LiiitoKala Model: Lii-50A Type: 26650 lithium battery (tip) Nominal Capacity: 5000mah(4900-5000mah) Nominal Voltage: 3.7V Weight: 95g±1g Rechargeable Battery: Yes Rechargeable Times: Up to 500 times internal resistance: ≤20mΩ Limited Charge Voltage: 4.2v Working Voltage: 2.75-4.2V Size: 67.35mm*26.15mm (diameter) Packing List: LiitoKala Lii-50A 26650 5000mah Rechargeable battery Features: Safe and environmental friendly. 100% LiitoKala Brand New and High quality. 26650 rechargeable li-ion lithium battery. Suitable for laser pointer, flashlight torch and other electronics products.