STAND HIGH&reg; 3.7V 18650 4PCS 5000mah Rechargeable Protected Lithium li-ion Battery with charger for headlamp&headlight&led light 18650 5000 mAh 3.7V Li-ion Rechargeable Battery High quality and durable. High energy density, long life battery No memory effect ,can be recharged up to 1200 times when fully or partially drained.Safe and envir 18650 battery fit for flashlight, headlight, laser pens.camera, toys, electronic toys and other electronic devices Designed to charge your batteries quickly and safely. Input Voltage: 110-240V, 47-63Hz