Maxday 18650 3.7V 4000mAh Lithium Rechargeable Battery

Key Specifications

• Brand / Model: Maxday 18650 Lithium Battery

• Voltage: 3.7 V

• Capacity: 4000 mAh (nominal)

• Type: Rechargeable Lithium-ion (Li-ion)

• Size: 18 × 65 mm (standard 18650 size)

• Cycle Life: Up to 1000 recharges

• Protection: Built-in overcharge and discharge protection (depending on model)

• Charging Time: 3–4 hours (approx., with compatible charger)

• Color: Blue / Red (varies by batch)

• Compatibility: Flashlights, RC cars, LED lamps, power banks, vape mods, emergency lights, and DIY projects