Photographing a roundhouse in deepest, darkest Wales, with a  SmallRig mini V-mount battery powering my equipment

/Adrian Kingsley-Hughes

You can buy a power bank for a few bucks. And it might work. If you're lucky.

Then you can buy a decent power bank from companies such asAnker orZendure and get a product that'll cost you more money, but you know it's going to work, work well, and give you years of service.

If I need a power bank for my off-the-grid activities, this is when I turn to something more professional. V-mount batteries.

What are V-mount batteries?

They're rechargeable battery packs that have a specific mount to connect them to photographic and video equipment. 

The name comes from the shape of the locking plate that is used to attach this battery to devices or stands. It's in the shape of a V. 

The "V-mount" that gives V-mount batteries their name

Adrian Kingsley-Hughes

Originally developed by Sony, the V-mount became a standard that's now found on all sorts of non-Sony equipment, powering cameras, lighting, displays, microphones, and other devices. 

Why do professionals use V-mount?

Well, a lot of pros started out using V-mount because something they own needed it. It was a reliable way of powering devices when there wasn't mains power available.

Nowadays, V-mount is chosen by photographers and videographers as a way to power their cameras, monitors, and other devices. A single V-mount battery can power multiple devices, so it means that you don't need to worry about keeping an eye on multiple batteries, swapping them when they get low and keeping them all charged up. You just have a single battery to care for.

But there have been a few drawbacks to the V-mount. Specifically, they were big and heavy, and you needed a specific charger to recharge them, which means that unless you were a professional willing to drop a lot of cash, they were prohibitively expensive to get into. For example: 

IndiPRO 2X Micro-Series 98Wh V-Mount Li-Ion Battery and Dual V-Mount Battery Charger Kit

$498.99 at Amazon

Evolution of V-mount batteries

Over the past year, I've noticed that V-mount batteries have evolved into multi-purpose power banks that feature not only the power outputs that you'd expect from a V-mount battery but also added USB-A and USB-C.

The addition of a USB-C port means that not only do you have a high-power port, but also a way to quickly recharge the V-mount battery without needing a bespoke charger.

This not only makes them really versatile, but also reduces the cost of using them.

Older V-mount batteries were also heavy and big, so you really didn't want to carry too many of them with you.

Modern V-mount batteries change this.

FXLION Nano ONE 3400mAh (50Wh/14.8V) V-mount battery

$179 at Amazon

SmallRig VB50 and VB99 mini V-mount batteries

Enter the SmallRig VB50 and VB99 mini V-mount batteries. These have 50Wh capacity/50W max output and 99Wh capacity/99W max output, respectively.

SmallRig VB50 and VB99 Mini V-mount batteries

$279 at Bhphotovideo

There's also an upcoming VB155 with 155Wh/155W max output, but I have not yet had the chance to test this battery.

They're called "mini" because they are some 30% smaller than standard V-mount batteries, yet still retain all the features professionals expect from V-mount and come with additional features.

You can attachall sorts of plates and adapters to the V-mount .

SmallRig V-mount plate

Adrian Kingsley-Hughes

SmallRig V-mount plate attached to battery

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SmallRig mini V-mount clamp

Adrian Kingsley-Hughes

There are 8V and 12V DC output barrel jacks, which have a wide range of uses when dealing with photo, video, and audio equipment. There's a D-Tap output that again is used to power a whole range of devices (I use D-Tap to power mySony A7IV mirrorless camera when it's being used for video along with theAtomos Ninja V external monitor).

D-Tap port

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There are also USB-A and USB-C ports. That USB-C port is super handy for not just charging devices, but it's also a quick and convenient way to charge the V-mount battery without needing a special charger.

Lots of ports

Adrian Kingsley-Hughes

On the front is an OLED display that displays battery information. It's not bright, but that's by design because the last thing you want on video or photo sets is a glowing panel adding random lighting!

OLED display on SmallRig VB99 offers a good overview of what's going on.

Adrian Kingsley-Hughes

Why the SmallRig VB50/VB99 are great for the modern photographer and drone operator

There are several features that I like in these SmallRig V-mount batteries.

First, V-mount batteries are designed to deliver power over multiple outputs. I've lost count of the number of times I've seen a power bank that's bristling with ports, but as soon as you try to use more than one, the power output becomes unstable.

That sort of thing is just useless.

These SmallRig V-mount batteries deliver the power when I need it. This is a top priority. 

Then there's the build quality.

These batteries are tough and designed to be used by people who aren't all that careful with things. The outer is a fire-resistant polycarbonate that takes quite a beating, and ports are covered by rubber protectors to prevent dirt and dust from getting in (note however that these are not waterproof). They have a working temperature of -10