I use these batteries for monitors and lights when I'm filming. The 550's are good for about 3 hours on a monitor and are much lighter than the 750's I have (that are double the size/charge). Fortunately, this also means they charge faster.
I do wish the charger was a fast charger, but it's USB, not direct plug, so it can only supply so much power. The charging base is small enough to fit with my gear and has USB-C and micro (anyone use micro anymore?). The only downside to the charger is that it displaysonly charging and full, it doesn't let you know how far along they are (like 3-bars, for example). When I'm at a shoot, sometimes it's useful to know if the battery is almost full, and with this charger, I have to guess. I've also found that if I take a full battery off the charger for a minute, when I put it back on, it'll charge for another 5-10 minutes. I don't know what's happening, if it takes that long to tell it's full or what, but it makes me wonder if it's underfilling the batteries for some reason (poor design, safety, or some other reason).
So far the batteries charge quick and work well. They clip in easily.
I do wish the charger was a fast charger, but it's USB, not direct plug, so it can only supply so much power. The charging base is small enough to fit with my gear and has USB-C and micro (anyone use micro anymore?). The only downside to the charger is that it displaysonly charging and full, it doesn't let you know how far along they are (like 3-bars, for example). When I'm at a shoot, sometimes it's useful to know if the battery is almost full, and with this charger, I have to guess. I've also found that if I take a full battery off the charger for a minute, when I put it back on, it'll charge for another 5-10 minutes. I don't know what's happening, if it takes that long to tell it's full or what, but it makes me wonder if it's underfilling the batteries for some reason (poor design, safety, or some other reason).
So far the batteries charge quick and work well. They clip in easily.
11/06/2026
I've always been happy with the K&F products I've purchased over the years, and these batteries are no exception.
They feel high quality and the charger works well. Speaking of the charger, I love that they flipped the pins upward. At first I didn't know if I'd like the change since all of my other chargers have you slide the batteries in, but I like it so much better. It somehow feels more stable and I'm more confident with the connection. The charging pins are also solid instead of the slotted ones you normally see so that makes me feel much more confident in their sturdiness.
The cherry on top: the price is really affordable. Great job K&F, and keep up the great work!
They feel high quality and the charger works well. Speaking of the charger, I love that they flipped the pins upward. At first I didn't know if I'd like the change since all of my other chargers have you slide the batteries in, but I like it so much better. It somehow feels more stable and I'm more confident with the connection. The charging pins are also solid instead of the slotted ones you normally see so that makes me feel much more confident in their sturdiness.
The cherry on top: the price is really affordable. Great job K&F, and keep up the great work!
25/04/2025
I have a small collection of NPF batteries and chargers, Some are from unknown brands and some are from branded suppliers, like these ones. For expensive equipment I tend to only trust the branded batteries as I know people who have had major issues in the past with battery issues.
K&F is a brand I trust as I've used their stands and filters for years.
These batteries perform exactly as expected and the charger works fine. It charges no faster or slower than my existing chargers, but it is nice and slimline and therefore is easy to pack away.
The batteries are NPF550 and work brilliantly, I've also used this charger to charge my hefty NPF-950 and it handled those fine too.
The charger and battery seems well constructed and not bulging or flexing anywhere it shouldn't.
Definitely a great option if you need a pair of NPF-550 batteries, these are the ideal size I find for field monitors and work a charm on mine.
K&F is a brand I trust as I've used their stands and filters for years.
These batteries perform exactly as expected and the charger works fine. It charges no faster or slower than my existing chargers, but it is nice and slimline and therefore is easy to pack away.
The batteries are NPF550 and work brilliantly, I've also used this charger to charge my hefty NPF-950 and it handled those fine too.
The charger and battery seems well constructed and not bulging or flexing anywhere it shouldn't.
Definitely a great option if you need a pair of NPF-550 batteries, these are the ideal size I find for field monitors and work a charm on mine.
14/03/2025
If you are looking for a multiple battery charger, this is the one you need to purchase. It allows to charge up to four batteries at the same time. It also has a charging indicator that will allow you to watch the status of the charge. It supports all kinds of NP-F570 up to NP-F960.
Overall, this has been a great addition to my charging station as I usually charge between 8-12 batteries on a single session.
Overall, this has been a great addition to my charging station as I usually charge between 8-12 batteries on a single session.
13/03/2025
I’m using these in constant lights. I like that you get two batteries since when I’m using constant lights, I typically use them in sets of two. Everything worked fine with the batteries. They charge up in a reasonable amount of time and last similar to other batteries I have of the same size. I noticed no problems like excessive heat or a drop in power. I like that they come with a charger. I’ve cycled through them multiple time. Good batteries.
12/03/2025
This product comes inside a cardboard box; once opened, you'll find the product itself (a charger) and a wire; it is a UK plug socket. After viewing this product, it is priced at £39.99; it charges many different batteries; I am using NP-F970 batteries; the product charges them all very well and quickly.
The product's wire is a little short, but it's long enough for most purposes; the product is high quality, and there is a little screen that shows the amount of battery - it's a really useful bit of kit, especially inside of a studio, it lets you quickly recharge your batteries and get back out shooting.
I definitely recommend this product
The product's wire is a little short, but it's long enough for most purposes; the product is high quality, and there is a little screen that shows the amount of battery - it's a really useful bit of kit, especially inside of a studio, it lets you quickly recharge your batteries and get back out shooting.
I definitely recommend this product
11/03/2025
K&F is a brand I have come to trust for all my photography-related purchases, and these batteries did not disappoint!
For the price it is remarkable that they provide 2 batteries, and a quality charger - I have no idea how they do it.
I'm using this on an LED smart panel and it totally transforms what I can do with it. For only $30 at the time of writing. I couldn't afford to buy 'name brand' batteries, and there are so many other brands out there whose quality I don't exactly trust. K&N has delivered again with a great product that lives up to my expectations.
Do not hesitate on this battery kit.
For the price it is remarkable that they provide 2 batteries, and a quality charger - I have no idea how they do it.
I'm using this on an LED smart panel and it totally transforms what I can do with it. For only $30 at the time of writing. I couldn't afford to buy 'name brand' batteries, and there are so many other brands out there whose quality I don't exactly trust. K&N has delivered again with a great product that lives up to my expectations.
Do not hesitate on this battery kit.
09/03/2025
I oftentimes use NP-F batteries to power continuous lights and external monitors.
I happened to need more than usual for an upcoming filming session, so I got these.
They work great so far in my testing.
Build quality is standard, but good nonetheless.
The included charger and USB-C cable are handy in case that you didn't have either previously.
This is a pretty good, standard kit. I recommend it.
I happened to need more than usual for an upcoming filming session, so I got these.
They work great so far in my testing.
Build quality is standard, but good nonetheless.
The included charger and USB-C cable are handy in case that you didn't have either previously.
This is a pretty good, standard kit. I recommend it.
07/03/2025
If you are using a variety of the larger Sony NP batteries then this is a must have, no question.
4 charging slots mean the chances of you ever running out of power are almost zero given how long these batteries last anyway, it charges quickly and efficiently and is something I would consider taking on a job over a couple of V mount batteries given the more lightweight nature of NP when rigged and the ability to have several charged at once.
Recommended.!
4 charging slots mean the chances of you ever running out of power are almost zero given how long these batteries last anyway, it charges quickly and efficiently and is something I would consider taking on a job over a couple of V mount batteries given the more lightweight nature of NP when rigged and the ability to have several charged at once.
Recommended.!
07/03/2025
This charger does the job! And even has a percentage LCD for each battery which is awesome I've never had that before. Some of the images showed batteries so I assumed like pretty much every other product of this kind I found - that it came with 4 batteries. It does not. My bad! Good charger good price.
03/03/2025