The Vista NP-F550 Lithium-Ion Battery Pack works with most led lights and monitors that support Sony L-type batteries NP-F550 NP-F570. This replacement battery pack features a capacity of 2400mAh and 7.4V of output power. Small and lightweight, lithium-ion batteries can be charged or discharged at any time. Being a lightweight battery compared to NP-F970. The NP-F550/570 batteries are highly recommended for On-camera devices such as camera monitored or on Camera led lights.