Got this K&F concept battery to use on my Canon R6 rig with the Smallrig tiltable Vmount bracket, and it's an awesome addition to my rig.

Adding a Vmount to your rig increases the weight tremendously but can also help reduce some hassle, especially, if like me, you are using a monitor as well. My monitor is an OSEE T5, and it likes to absolutely chew through the Sony NPF style batteries, so I'm always changing them like twice on shooting days. With this Vmount battery, I can plug in a usbc-to-usb micro cable, and power the screen off it for the entire day no problem.

I have one other Vmount battery, and this K&F has some big advantages. One, it's smaller than the competitor in every dimension, which is great for cuttings some bulk. Two, the screen is much more useful and provides pretty much the easiest way to tell how long its going to last - a run time meter! This is so awesome and being new to v-mount, I didn't even know it existed. On the screen of the K&F, you can see both USB port voltages, the battery voltage and bars%, as well as the current runtime for the output you are using. I have not used this to power my camera or other accessories quite yet, but seeing that number is incredibly useful.

One complaint, which might be a USB restriction, is that my display refuses to work on a USBA-to micro cable. I'm not sure if this is because USBA can't resolve above 5v or what, but I have to use a C-to-micro. PD on the USB C port works as expected, and is very useful because to power an R6, you have to use that. Unfortunately with my current cable set, my display cable blocks my USB port on my camera, so I wasn't able to power both the camera and screen at the same time, but I'm sure that's possible with a cable change.

Overall for the price of this battery, it's awesome. I would say that you should refrain from dropping it, as you should with most camera gear, but the plastic on it does not feel super thick. The vmount has a plastic plate where it contacts the receiving end, and feels just fine. It's attached with 3 screws so if you do break it somehow, it could theoretically be replaced.

Charging this over USBC works fine and charges the battery up in some amount of time (I always charge the night before shoots so I don't really care). If you look at the screen while charging, it does actually show that the voltage resolves to 20v, so make sure you are using a PD-compatible charger to get maximum charging speed.

This is your basic V-mount battery for use on a portable lighting solution. A lot of applications for theses units but I've been putting this one on LED light panels or COB constant lights a fair amount. Performance has been really good and the unit is well made with a nice finish and tightly fitting port covers.

The integrated display helps you keep track of charge percentage and output voltage. I found this pretty helpful. I used my D-tap charger without issue on this unit and it came back to full charge pretty quickly.

All in all a solid unit that I have in my kit for those times when you need power to go.

Nicely finished.

First of all, this is a good price for a V-Tap battery like this, a bit on the heavy side but that can't be helped. Initial charge took 4 hours to get to full power. Now usage is down to 60% at the lowest and takes about 2.5 hours to get back to full. Not bad, I think and coomes with an array of any type of port you way need likes the USBs and D-Tap. I have a dummy battery attached to this from another manufacturer to power my R5 and they all play well together. No issues. The V attachment also hangs well on my Neewer and SmallRig cages and pieces. Sometime in direct bright sunlight of this tropical region, the screen can be a little hard to read. Have to shade it with something but the readout is fantastic. No need to look at a little line of LCD dots to see the charge, thank goodness. All in all it was exactly what I was looking for, I now I don't have to send assistants back to the office to charge or get me new batteries!

It's pricey, but it's a lot smaller than most of your regular Vmounts and offers MUCH MUCH more features like easy and fast charging via USBC, Dtap to the battery itself and a whole lot more. It holds the battery very well and delivers power perfectly. I had no problems with it, but only used it to power my camera. I'm planning on trying to power a lamp and power my camera and monitor at the same time. You can get it cheaper, but I don't recommend skipping out on no-name brands. So you don't have to go for these, but if you're interested and they're on sale, I would 10,000% buy them again.

This battery is amazing and works perfect with the Canon R5C and a Kondor Blue DTap to USB-C cable. Highly recommend due to it's size and weight.

I have the 99W and it is exceptionally well built. It powers my Canon R5 C and Atomos Ninja V and shoots at 4K and 60fps in ProRes 422 HQ without a hitch for an hour and a half and I still had 46% left.

Couldn’t be happier

The VB99 Mini V Mount battery from K&F Concept is delivered in a very stable box, which is lined with foam on the lid and on the bottom. The manufacturer has included a leaflet with instructions and information, but unfortunately the language is only English. A charging cable is also not included in the scope of delivery. The black plastic housing is very solid and most of the connections are protected from splash water by soft rubber covers. The first thing I did was fully charge the battery. The capacity of the internal lithium-ion battery with a size of 6700 mAh is displayed with percentage accuracy. The OLED display is easy to read, but I would like it to be a bit bigger. The glossy black surface on the front is approx. 65 mm wide and approx. 60 mm high. The display, on the other hand, is only about 20 x 10 mm. The strengths of this device lie in the protective mechanisms such as overcharging, overvoltage or overcurrent. In addition, the internal battery can be charged even though a camera or smartphone, for example, is being supplied with power. I was able to quickly charge my smartphone via the USB-C as well as the USB-A socket. While the charging time via USB-C corresponded to that of my 220 V power supply, it was even a little faster via USB-A. Conclusion: very solid power dispenser with a sharp OLED display, but I would like it to be bigger. I'm not deducting a star because you can see this in the pictures before you buy it. I hope this review is useful

I have two of them for my BMPCC 6K because the actual batteries are empty far too quickly. Works fine with this. They are a bit expensive compared to similar parts, but perhaps they will last longer.