Neewer 4-Pack 7.4V 6600mAh NP-F970 Replacement Batteries with 4-Channel Battery Charger & Power Adapter, Compatible with NP-F550/750/770/970 FM500H QM71D QM91D, Field Monitor, Video Light

LCD Screen Fluorescent backlight in the dark and battery indicators Ferrite Ring Stabler input charging current and longer battery lifespan Good Heat Dissipation Vents on both sides improve heat dissipation prevent overheating and extend product lifespan 6600mAh Li-ion Battery 4-Channel NP-F Battery Charger