Cheap price high capacity lithium ion 18650 3.7V 3000mah rechargeable li-ion power battery can be used alone or according to customer requirements for multiple combinations (such as two combinations 3.7v 5v 7.4V, 9.6v 11.4V, 14.8V, etc.) especially suitable for stage lighting, notebooks, flashlights, MID, MP5, mobile DVD, camera, projection High-tech digital products such as instruments, mobile backup power supplies, lighting fixtures, and communication power supplies.