Godox series can be said as a revolutionary product among roof flashing light field， creating the integration of roof flash and lithium-ion batteries. What we would like to recommend you today is this Godox VB-18 Dedicated Rechargeable Li-ion Battery for V850. Adopting superior material and with highly advanced technology， it gets long service time. Light back speed up to 1.5 seconds， going ahead of those similar products. And its full power flash reaches to 650 times， which guarantees enough flash time during shooting. Additionally， you needn’t to carry a large number of spare AA batteries and burdened power supply box as long as you take this dedicated Li-ion battery. Featuring independent research and development， it can yet be regarded as the NO.1 selection for you.                                    Features            New generic Li-ion batteryHigh energy density， high recycle life and long life-spanExtra power for your digital video camera/ camcorderQuick light back speed goes ahead of similar products650 times full power flash promises enough shooting timeIt is portable and convenient to carry with youHigh capacity and rechargeable Li-ion battery with premium cell                                                            Specifications             Model     Godox VB-18    <br> Capacity     11.1V/ 2000mAh    <br> Full Power Flashes     650 times on V8504. Recycle Time: 1.5s (Full Power)5. Charging Time: Approx. 2.5 hours with AC charger; 4 hours with car charger6. Dimensions: (2.2 x 2.28 x 0.94)" / (5.6 x 5.8 x 2.4) cm(L x W x H)          <br> Weight     136 g / 4.8 oz     <br>                                                             Package Includes            1 x Godox VB-18 Rechargeable Li-ion Battery for V850<br>