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Watson FastPower VM-140-FP Battery with USB Ports (140Wh, V-Mount)

BH #WAVM140FP • MFR #VM-140-FP
6 reviews
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Watson FastPower VM-140-FP Battery with USB Ports (140Wh, V-Mount)
Key Features
  • 14.8V Output | 140Wh
  • Advanced LED Control Screen
  • Up to 15A Draw
  • Recharging via V-Mount and USB-C
The FastPower VM-140-FP Battery with USB Ports from Watson is built with advanced features for powering studio gear like cameras, lights, and monitors while rapidly charging peripherals like laptops, mobile devices, drones, and wireless transmitters. It features USB-C, USB-A, D-Tap, and 8/12 VDC barrel output ports, and an advanced LED control screen that provides constant updates on the battery's status, including incoming and outgoing currents of each port and real-time remaining capacity readouts.
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Watson FastPower V-Mount Battery Overview

The FastPower VM-140-FP Battery with USB Ports from Watson is built with advanced features for powering studio gear like cameras, lights, and monitors while rapidly charging peripherals like laptops, mobile devices, drones, and wireless transmitters. It features USB-C, USB-A, D-Tap, and 8/12 VDC barrel output ports, and an advanced LED control screen that provides constant updates on the battery's status, including incoming and outgoing currents of each port and real-time remaining capacity readouts.

The VM-140-FP has a 14.8V output and supports up to a 15A draw, with Power Delivery up to 100W, so attached devices receive optimal power for rapid charging. Depending on your gear's requirements, the USB-C output current is adjustable from 1 to 6.5A. Innovative operating modes allow the battery to be used as a portable power bank capable of charging another battery, recalibrating the battery, and limiting charging to 75% capacity for optimal long-term storage. It can be recharged with a V-mount charger or via the USB-C port.

This 140Wh battery is IATA/ICAO carry-on airline compliant.

V-Mount Power
This battery fits into most standard V-mount plates, and it will power any camera, light, or monitor that draws up to 15A.
D-Tap Connector
The battery has a D-Tap port to power gear like monitors, cameras, or lights, eliminating the need to add extra batteries or power cables to run these accessories.
Multiple USB Connections
Smartphones and laptop batteries don't always last through lengthy shoots. This battery can be used as a power bank, using the integrated USB-A and USB-C ports to power devices like smartphones, wireless transmitters, and receivers to avoid delays and downtime while you shoot.
USB-C Connectivity
The USB-C port provides up to 100W Power Delivery output to charge power-hungry devices quickly and efficiently, and it can also be used as an input port to recharge the battery.
Advanced LCD Screen
To prevent unexpected situations that could interrupt your workflow, monitoring battery status is a must. The LCD screen shows remaining battery capacity and charge time. The easy-to-read screen displays constant updates on the battery's status, including incoming and outgoing currents of each port. It also displays the battery's operating temperature and current draw so you can always operate within safe parameters. There is also a 4-LED battery status indicator.
Charging Options
The VM-140-FP can be recharged via a V-mount charger or the USB-C port.
Intelligent Control Circuit
A built-in intelligent control circuit protects this battery against damage caused by current, voltage, temperature, or short-circuiting.
Accessory Mounting Options
This battery has a 1/4"-20 female thread and a cold shoe mount for adding compact accessories to your rig setup.
USB-C Protocol
  • Apple: 5V, 2.4A
  • QC 2.0/Huawei FCP: 5/9/12V
  • QC 3.0: 12V
  • Samsung AFC: 9/12V
USB Standard-A Protocol
  • Apple: 5V, 2.4A
  • QC 2.0: 5/9/12V
  • QC 3.0: 12V
  • Samsung AFC: 9/12V
  • Huawei FCP: 5/9V
UPC: 847628531406

Watson FastPower V-Mount Battery Specs

Battery
Battery Type
1x V-Mount
Battery Capacity
145 mAh
Output Voltage
14.8 VDC
Battery Chemistry
Lithium-Ion
Power I/O
1x USB-A Female Output
1x USB-C Female Input/Output
1x D-Tap/P-Tap Female Output
1x Barrel/Coax Female Output
Accessory Mounting Thread
1x 1/4"-20 Female Thread
Indicator
Display
Dimensions
4.6 x 3.1 x 2.5" / 11.7 x 7.9 x 6.4 cm
Weight
1.7 lb / 0.8 kg
Environmental
Operating Conditions
14 to 104°F / -10 to 40°C up to 85% Humidity
Packaging Info
Package Weight
1.99 lb
Box Dimensions (LxWxH)
6.5 x 4.4 x 3.6"

Watson FastPower V-Mount Battery Reviews

Not 140WH

By Neill
Rated 4 out of 5
Date: 2026-07-25

This battery is listed as 140Wh hour but is actually only 98 Wh (as the LCD display shows in the photo.) Watson makes a good battery. We've been using series pairs of Watson V99s for 8 years on our Alexas and our first pair is still going strong. The VM140 looks to be about the same battery with the added ports and the LCD screen and we expect similar performance.

Perfect for my needs

By Cully
Rated 5 out of 5
Date: 2026-02-26

I use this to power an ENG shoulder rig: Fx6 + monitor + small panel light. Two of these are enough for a full day shoot. Note, if using this as a rear counterweight, keep in mind these are a lot lighter than bricks used to be. I actually use two on the back rails. Since I need to carry a spare anyway, might as well use it for leverage! 100W PD is amazing for fast charging and for powering stuff like little lights. The USB can run an Amaran Pano 60c at full brightness, and the Ray 120c at 65%. If I ever need to power bigger lights like the Aputure 400x, the 15 amp draw will be appreciated (compared to the 10a common to batteries in this size and class). The 1/4" mounting points are handy. When powering a mirrorless camera, I can just clamp this to a tripod leg and run it all day. I've dropped one of these onto concrete from head height, and it barely scuffed a corner. I'll update this review if I run into longer-term durability issues.

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