If you’re shooting with the Sony a7R IV, one of the biggest challenges is keeping up with its high power demands during long sessions. Whether you’re filming in 4K, capturing high-resolution stills, or working on extended outdoor shoots, the stock NP-FZ100 battery can drain quickly. That’s where a V mount battery for Sony a7R IV comes in. It offers higher capacity, reliable performance, and versatile outputs to keep your camera running for hours.
In this guide, we’ll walk you through three of the best V-mount battery options for the Sony a7R IV, helping you choose the right one for your workflow.
Introduction
A V-Mount battery is an ideal power solution if you want longer runtime for your Sony A7R IV. Compared to the original NP-FZ100, V-Mount batteries offer higher capacity and more versatility.
In this post, we highlight options with capacities of 99Wh or less—perfect for air travel without hassle. Many of these batteries also feature multiple outputs and, in some cases, a display, so you can use them to power not just your Sony camera but other devices as well.
Best with dual D-tap: Moman Power 99 99Wh V mount battery for Sony A7R IV and other gear
The Moman Power 99 is a good choice for a V-mount battery, especially for filmmakers who travel. Its 99-watt-hour capacity is just under the 100-watt-hour limit for air travel, allowing you to carry it on flights without issue.
What makes the Power 99 stand out is its two D-Tap ports. This can power devices like lights or monitors and can also be used to charge the battery with a D-Tap charger. Additionally, it features USB-A and USB-C ports, protected under a rubber cover, for charging other devices.
With a strong 15-amp draw, the Power 99 can provide full power to demanding equipment like 200-watt lights, though this will significantly reduce its runtime. A simple five-bar indicator shows the battery's charge status.
Product information
| Capacity | 99Wh (6875mAh) |
| Nominal Voltage | 14.4V |
| Maximum Continuous Output | 15A |
| Maximum Power Output | 200W |
| Charging Input | D-Tap (16.8V), USB-C (65W max) |
| Outputs | 2 × D-Tap, 1 × BP (V-mount), 1 × USB-A, 1 × USB-C |
| Dimensions (W × H × D) | 73 × 55 × 100 mm |
| Weight | 560 g |
| Recycling Life | Up to 1000 cycles |
| Price | $149 |
Pros
🟢Compact and travel-friendly: Its 99Wh capacity meets airline regulations
🟢Multiple charging options: Can be charged via USB-C, D-Tap, or BP input
🟢Multiple output ports: Equipped with two D-Tap, one BP, two USB-A, and one USB-C ports
Cons
🔴No OLED display: Unlike the Power 99 Pro model, this version lacks an OLED screen for real-time monitoring of battery status.
🔴Plastic build: The plastic construction may not be as durable as other materials
Best with OLED display: Moman Power 99 Pro 99Wh V mount power supply to monitor the powering status to a7R IV
The Moman Power 99 Pro is a portable V-mount battery that's great for travel, weighing just 540g. Its compact design doesn't compromise on power, offering a substantial 99Wh capacity, which is also the maximum allowed on flights.
This battery features multiple ports, including two D-Tap ports, USB-A, and a 65W USB-C port that can also be used for fast charging the battery itself. The Moman Power 99 Pro has an intelligent battery management system to ensure a safe and stable power output.
It also includes an OLED screen that displays the battery voltage, charging and discharging current, estimated runtime, and current battery power.
Product information
| Capacity | 99Wh (6875mAh) |
| Nominal Voltage | 14.4V |
| Maximum Continuous Output | 15A |
| Maximum Power Output | 200W |
| Charging Input | D-Tap (16.8V), USB-C (65W max) |
| Outputs | 2 × D-Tap, 1 × BP (V-mount), 1 × USB-A, 1 × USB-C |
| Dimensions (W × H × D) | 73 × 55 × 100 mm |
| Weight | 540 g |
| Recycling Life | Up to 1000 cycles |
| Price | $179 |
Pros
🟢Carries OLED screen: Get real-time feedback about voltage, current, and remaining runtime
🟢Versatile ports: USB-C (65 W), USB-A, dual D-Tap, and BP output give you options for powering or charging multiple devices
🟢Good durability and safety: Smart BMS protection and cell balancing for longevity
Cons
🔴Price premium: The added features (OLED, fast USB-C) make it more expensive than basic models.
🔴OLED display power draw: The display itself consumes a little energy, though that is minor compared to the main load.
Best with compact design: Moman Power 50 Touch 50Wh V-lock battery for powering Sony a7R IV
If you’re looking for a lighter, more portable V-mount battery, Moman Power 50 Touch fits the bill. Weighing only about 330g, it won’t add much bulk to your gear or your luggage. Despite its compact size, it offers a 50Wh / 3,450mAh (14.4 V) capacity, which is sufficient for many common uses.
The Power 50 Touch is equipped with multiple output and input interfaces: D-Tap, USB-C, USB-A, DC barrel, and BP. Its D-tap and DC ports are located on different faces of the battery, helping reduce the risk of cables bumping or disconnecting during use.
The Power 50 Touch includes an intelligent battery management system (BMS) to maintain stable voltage output, protect against faults (overcharge, overcurrent, etc.), and improve overall safety.
What sets it apart is its LED display, which shows real-time information on remaining working time and the battery percentage.
Product information
| Capacity | 50Wh |
| Nominal Voltage | 14.4V |
| Maximum Continuous Output | 8A |
| Maximum Power Output | 100W |
| Charging Input | D-Tap (16.8V), USB-C |
| Outputs | 1 × D-Tap, 1 × BP (V-mount), 1 × USB-A, 1 × USB-C, 1 × 8V DC |
| Dimensions (W × H × D) | 73 × 33 × 102 mm |
| Weight | 330 g |
| Recycling Life | Up to 1000 cycles |
| Price | $139 (buy one, get one at 50% off) |
Pros
🟢Very compact and lightweight: Easier to carry, less load on your rig.
🟢Versatile outputs in small form: Despite its small size, it offers D-Tap, USB-C, USB-A, DC barrel, and BP/V-mount interface.
🟢Display for status: You can tap the button to switch between remaining time and battery percentage on the screen.
Cons
🔴Lower capacity and output: 50Wh and 8A / 100W means it can’t handle heavy loads for long.
🔴Shorter runtime under load: At higher draw, you'll exhaust it more quickly.
FAQs
Here is more information about the V-mount battery for Sony A7R IV.
Q: What do I need to power the Sony a7r iv besides a V-mount battery?
A: To use a V-Mount battery with the Sony a7R IV, you’ll need a few additional components:
- DC Coupler / Dummy Battery: This fits into the camera’s NP-FZ100 battery slot and connects to the V-Mount battery.
- V-Mount Battery with Compatible Output: Make sure the battery provides a DC or USB-C PD output compatible with the coupler.
- Cables / Adapters: Depending on your battery, you may need a USB-C to DC or D-Tap to DC cable.
- Optional Power Distribution – If you want to power additional devices like monitors or lights, consider a V-mount battery plate.
With this setup, you can enjoy longer runtime, monitor battery levels, and even power multiple devices on set.
Q: Can I charge the Sony a7R IV directly via USB-C from a V-Mount battery?
A: Some V-Mount batteries with USB-C PD output can charge the camera, but voltage and compatibility must match. Using a DC coupler with D-Tap or USB-C output is usually more reliable.
Q: Can I power other devices with the same V-Mount battery?
A: Yes. Many V-Mount batteries have D-Tap, USB-A, and USB-C outputs, allowing you to power monitors, lights, or audio gear alongside your Sony camera.
Q: How long will a V-Mount battery power my Sony a7R IV?
A: Runtime depends on capacity and usage. A 99Wh battery can power the camera for roughly 5–8 hours under normal shooting conditions, much longer than the standard NP-FZ100.
