Swit PB-C420S 420Wh Large Capacity V-mount Battery

The SWIT PB-C420S redefines what a handheld V-mount battery can deliver. With a massive 420 Wh / 29.1 Ah capacity, it holds the distinction of being the largest-capacity handheld V-mount battery available — purpose-built for productions that demand all-day power from a single source, without the operational disruption of frequent battery swaps.

At the core of the PB-C420S are 24 high-load Li-ion cells configured at a nominal 14.4 V. This cell count is not simply about raw capacity — it is about sustaining serious output under demanding conditions. The battery delivers a constant 250 W at 20 A even when charge drops as low as 1%, and it handles peak loads of up to 305 W at full charge. Whether you are running a high-power cinema camera alongside an on-camera monitor, wireless video transmitter, and a compact LED panel, the PB-C420S drives the entire rig without faltering. Over-current protection kicks in at 24 A, providing an additional layer of safety for connected equipment.

Despite its extraordinary capacity, the PB-C420S is engineered for speed in the field. It supports 100 W / 6 A fast charging, cutting charge times by more than 50% compared to standard V-mount chargers. From completely flat, the battery reaches 80% charge in 3.9 hours and achieves a full charge in 5.3 hours — allowing a realistic turnaround between shooting days or during extended production breaks.

Two D-tap output ports are positioned on the left and right sides of the battery body, each rated at up to 150 W load. This dual-port layout allows two high-draw accessories to be powered independently and simultaneously — a monitor on one side, a wireless transmitter or follow-focus motor on the other — without the need for splitters or additional cables cluttering the rig. Both ports operate at the battery's full 14.4 V nominal output.

Power status is communicated through a five-LED digital indicator on the battery face, giving an immediate at-a-glance readout of remaining capacity in 20% increments. Beyond the LED display, the PB-C420S supports digital viewfinder power information output compatible with Sony and RED camera systems, delivering precise remaining runtime data directly into the camera's viewfinder or monitor — the same kind of intelligent battery communication found in high-end cinema battery ecosystems.

Reliability under load is built into the PB-C420S at the cell level. High-load cells are specified throughout, which not only ensures the battery's sustained output capability but also contributes to better long-term cell health when operating at full load for extended periods — a characteristic that standard-load cells cannot match under the same conditions.

A comprehensive multi-circuit Battery Management System monitors the battery continuously, providing active protection against overload, overcharging, over-discharging, high temperature, and short circuit. If any parameter moves outside safe operating limits, the BMS responds immediately to protect both the battery and the connected devices. This level of protection is essential when a single battery is powering tens of thousands of dollars worth of camera equipment on a professional production.

It is important to note that the PB-C420S exceeds the 100 Wh IATA limit for airline carry-on batteries and will need to be checked or shipped as cargo in accordance with airline and shipping regulations. For studio productions, rental houses, location-based shoots, and any production where the battery travels by road or sea rather than air, the PB-C420S is a transformative piece of infrastructure — eliminating the battery management complexity that comes with running multiple smaller cells to achieve the same total capacity.

For productions powering high-wattage LED fixtures, large-sensor cinema cameras with heavy accessories, or complex multi-device rigs that would exhaust a conventional battery within a few hours, the SWIT PB-C420S is the definitive solution — maximum capacity, maximum output, and maximum confidence that the power will be there for every shot of the day.