The TC40-JVC-650 from Dolgin Engineering features integrated battery plates that support JVC SSL-JVC50 and SWIT S-8I50 batteries, as well as the third-party versions of these models. These batteries are used with JVC's GY-HM600 and GY-HM650 cameras.

The TC40 has semi-independent channels and provides Dynamic Power Management (DPM) when charging four batteries. This means that it allocates more power to the battery that needs it the most first. Once battery levels are equal it charges all batteries simultaneously with equal power distribution. The result is that all batteries will be ready at the same time. Based on a capacity of 5600mAh, the TC40 delivers a complete charge in approximately 4.5 hours for four batteries or when you charge a single battery. With the battery plates built in, the battery contacts are ensured to remain more intact.

Charge status is displayed per battery by indicator lights on the front panel. The TC40 comes with a U.S. power cord and supports worldwide power input via optional plug adapters, as well as 12 VDC car lighter power via an optional adapter (model # DE_CAR_12).