Swit PB-M146S 146Wh Pocket V-mount Battery Pack

The SWIT PB-M146S is the largest-capacity model in SWIT's PB-M series of pocket V-mount batteries, delivering a substantial 146 Wh / 10.1 Ah of runtime in a body that remains genuinely compact and portable. Designed for filmmakers and camera operators who need more than a standard mini battery can offer — but without the weight and bulk of a full-size V-mount brick — the PB-M146S strikes an ideal balance between capacity, output power, and everyday carry convenience.

With a nominal voltage of 14.4 V and a constant load rating of 150 W at 12 A, the PB-M146S is built to power not just the camera body but the full rig — on-camera monitors, wireless video transmitters, follow-focus motors, and other accessories drawing from the same source simultaneously. This high-load capability remains consistent throughout the battery's discharge cycle, ensuring that performance does not drop off as charge depletes. For a typical 30 W camera draw, the PB-M146S provides approximately five hours of continuous runtime from a single charge.

The PB-M146S is part of a coherent family of pocket V-mount batteries — the PB-M series covers 45 Wh, 98 Wh, and 146 Wh capacities. Critically, all three models share identical output ports and the same footprint at the base, meaning they mount identically on any V-mount plate and are fully interchangeable across the same rigs and chargers. The only dimension that changes is thickness, which increases proportionally with capacity. This consistency makes the PB-M series an exceptionally practical choice for productions that operate multiple battery sizes, allowing crews to standardise their accessories and chargers across the entire fleet.

One of the PB-M146S's most distinctive engineering features is its "Wire-Free" internal construction. Rather than using traditional connecting wires to link the cells, D-tap socket, USB port, and power indicator to the circuit board, every component is soldered directly onto the PCB. This approach eliminates the internal resistance that wire connections introduce, resulting in a more stable, efficient circuit with lower heat generation and improved long-term reliability. It also removes potential failure points — loose or degraded internal wiring is a common cause of battery faults over time, and the wire-free design addresses this entirely.

Charging flexibility is a practical strength of the PB-M146S. It accepts input via both standard V-mount chargers and D-tap chargers, making it compatible with virtually any charger already in a professional kit. SWIT recommends the S-3822S portable two-channel simultaneous charger, which charges two PB-M146S units at the same time in approximately 3 hours 45 minutes — an efficient turnaround for back-to-back shooting days. The PC-U130B2 ultra-portable dual D-tap charger is also compatible and charges a single battery in approximately the same time.

For productions requiring extended uninterrupted shooting, the PB-M146S is compatible with SWIT's KA-M20S Hot-Swap Adaptor, which mounts two PB-M146S batteries simultaneously and switches between them seamlessly without interrupting power to the camera. When the first battery depletes, the adaptor automatically draws from the second, and the depleted unit can be swapped out live during recording. Together, two PB-M146S batteries via the KA-M20S deliver a combined capacity equivalent to a standard full-size V-mount battery — all in a pocket-friendly form factor.

Power status is monitored via a five-step LED indicator on the battery face, providing a clear at-a-glance reading of remaining charge in 20% increments. The PB-M146S also supports digital viewfinder power information display for both Sony and RED camera systems, feeding accurate remaining capacity data directly into the camera's viewfinder or monitor — eliminating the need to physically check the battery indicator mid-shot.

Built-in multi-circuit protection monitors for overload, overcharging, over-discharging, high temperature, short circuit, and other abnormal conditions, with the battery automatically protecting itself and displaying the relevant protection status when any fault is detected. This safeguards both the battery's long-term health and the devices connected to it.

Airline carry-on approval (IATA) depends on the specific airline's policy for batteries between 100 Wh and 160 Wh; at 146 Wh the PB-M146S falls within the range that many airlines permit in carry-on baggage with prior approval, though travellers should verify with their carrier before flying. For productions that move frequently between locations by air, this makes the PB-M146S a far more travel-friendly high-capacity option than batteries exceeding the 160 Wh threshold.

Whether mounted directly to a camera for a solo run-and-gun shoot or paired in a hot-swap configuration for a full day of scripted production, the SWIT PB-M146S delivers the capacity, output quality, and engineering refinement that professional operators expect from a primary power source.