the rolux smart v-mount battery yc-120s is a very professional li-ion battery which is compact in size, light in weight and has a capacity of 120wh. the battery status is displayed by 5 led indicators on the side of the battery. a battery charger is not included, but is seperately available (see the optional accessories tab below). usage rolux smart v-mount battery yc-120s you can use the rechargeable battery for different electrical devices with v-mount connection such as video cameras and led lights. furthermore the battery also has a usb and d-tap connection, which gives you the possibility to for example charge your smartphone, laptop or tablet. differences with other v-mount batteries the battery is 20% smaller and 10% lighter in weight.