Yueling@ 4pcs 18650 Battery + Charger 3000 mAh 3.7V Li-ion Rechargeable Battery for flashlight headlamp Red High quality and durable. Provides excellent continuous power sources to your device. High energy density, long life battery. This battery has an extra long life for all your battery powered devices. Yueling Li 18650 3000 mAh 3.7V Li-ion Rechargeable Battery.