These batteries are solid and keep my gear powered up for hours, which is a big win when I’m filming or using my lights. The dual charging setup is a nice touch, and I like that it charges over USB, making it convenient to plug in almost anywhere.

Charging speed, though, could be faster—these take a while to fully recharge. The charger’s basic LED indicators are useful but not very detailed. If fast recharges aren’t critical, these are a great option that does the job reliably.

Currently priced at £59.99 with a 15% off voucher at time of review….

Ample Power Supply. 2 of replacement NP F970 batteries for Sony NP-F970 battery. Comes with 2 pack 6600mAh (real capacity) batteries and a charger provide longer battery life for your photography. An ideal power back up.…

Arrive nicely packed and secure in a box…..
Batteries are heavy so should hold a lot of charge ….

Finding reliable power sources for my equipment has always been a bit hit or miss, but these K&F Concept NP-F970 compatible batteries have been a solid choice. I needed dependable batteries for my video light panels and my field monitor while working from home and for outdoor shoots. Both batteries offer an excellent capacity, running my gear for hours without interruptions. One time, I used a battery to power my 20-watt video light for over three hours, which was quite surprising.

The inclusion of a dual USB charger is a nice touch, even though it charges a bit slowly. Overnight charging sorts that out for me since I can just plug them in before bed. I do wish the batteries had an onboard power indicator for ease of use, but that’s a minor issue considering their performance. Also, the charger’s imbalance when both batteries are inserted is noticeable but not a major problem for me.

In terms of design, they fit my devices without any hassle and performed on par with more expensive, branded options. I was initially sceptical given K&F’s primary reputation for other types of accessories, but these batteries have proved to be reliable, cost-effective additions to my kit. Whether I’m in my home studio or enjoying a scenic hike while capturing footage, these batteries ensure my gear stays powered.

The batteries worked perfectly. No issues with it. The charger also worked fine: it uses USB which is convenient and it worked well.

Each of the K&F Concept NP-F970 batteries weigh 291g (according to my scales) so are slightly more convenient to pack in my camera bag than their higher capacity counterparts.

With 6600 mA capacity, one of these batteries powered my high-brightness monitor continuously for almost 6 hours, without making it too cumbersome to setup & use.

Charging the batteries when exhausted is not a particularly quick experience with the provided charger, but is balanced by not heating the batteries during charging, so total life of the units should be very good, when compared to faster charging types.

I've got them to power a couple of LED wand lights, which should arrive soon, I'll update on their usefulness in a month or so.

These batteries work perfectly in my camera. I've only ever used the OEM batteries that I got when I bought the camera. It's great to have 2 spares and another charger. I fully charged both batteries and have tested them both in my camera. The batteries work great and last a long time. The charger seems a little bit slow. Not the end of the world as these batteries are backups for the backpack and wont be used too often. Much cheaper than OEM so in my opinion, good value for money.

These Sony NP-550 series compatible batteries which work well and produce consistent power over a sustained period of time.

The charging base holds two batteries and they are slotted in vertically which is a good space saving design. They are charged via a single USB C socket or a micro USB.

For the first charge I used a low power USB C charger and it took over 12 hours for the pair.
Then I used single batteries to separately power a Mark 1 Atomos HD Ninja and a V5 Atomos 4K Ninja.
The V1 ran for 24 hours the V5 about 6 hours. These are very different units with different power draws but the batteries worked well in both. I wouldn't hesitate to use these batteries professionally.

Great value for lots of mili-amperage of NPF for all your shooting/lighting needs.
The batteries feel solid and the charger connects solidly, confidenlty sitting them in place for charging.
They charge fast enough (not slow or anything, exactly what you expect) and the charger plate feels solid.

The batteries work very well, and it’s great not having to trip over power cords or deal with low-battery anxiety anymore. At the end of the day, they’re batteries—it’s a pass or fail situation, and they definitely pass.

However, I do have the same batteries from Neewer, and I have to say I prefer the charger that came with those. Aesthetically, the Neewer charger looks better to me. Would I pay more for it? Probably not. But if everything else were equal, I’d likely choose the Neewer option just for the charger.

With a 900mA discharge current, one battery tested at 8500 and the other at 8800, which is higher than the advertised capacity. Usually, we see the inverse.

The charger consumes 5W for each battery, even with a single battery, the charge is slow. Even with USB-C. This mean 11-12hours of charging time. Charging LED's are inverted compared to battery position. This is not the best charger, but this is accurately what is described.