K&F Concept 2400mAh NP-W235 Battery, Twin Pack USB C 2.5H
K&F Concept 2400mAh NP-W235 Battery, Twin Pack USB C 2.5H Charging Replacement Fuji XT5 Batteries for Fujifilm XT5 XT4 X-H2S X-H2 GFX 50S II GFX 100S Cameras
From the brand
K&F Concept 2400mAh NP-W235 Battery, Twin Pack USB C 2.5H Charging Replacement Fuji XT5 Batteries for Fujifilm XT5 XT4 X-H2S X-H2 GFX 50S II GFX 100S Cameras
I used this battery for the first time in my camera for the eclipse. It charged quickly and worked great. I love the fact that you can charge it in a traditional charging base or simply by connecting a usb-c cable to it. You can never go wrong with K&F products.
These are very good 3rd party batteries for Fujifilm cameras that use NP-W235 batteries. They are rechargeable via either USB-C or a dedicated battery charger. LED indicator shows amber light for charging and green light for fully charged.
I can’t determine at this point the longevity or reliability of these batteries, but so far they fit the bill.
Recommended.
These are proving really useful as spare batteries for my Sony A7s. NP-FW50s are notoriously weak batteries that drain in no time, and these are pretty similar to the Sony originals, but I like the advantage of being able to charge them by USB-C. Saves me dragging another set of chargers around with me.
Though I’m really pleased with them, they really missed the boat with the USB-C port placement. If they’d put that on the bottom of the battery as it’s installed in the camera, they could be charged on the go, or act a kind of dummy battery to pull in a source from something like a v-lock battery. But that’s nitpicking. Good value and effective.
The thing I like the most about this battery is that I can recharge it in my car with just a USB cable; no need to take along a battery charger. It’s a small thing, but I have enough trouble remembering the equipment I need for a photo safari. One less thing is helpful.
It also works well in my Fuji GFX 100S. Just like the original equipment. I can’t say if it takes the same number of shots as the original, but it’s close enough for me.
It arrived with a charging cable to boot. Overall, I’m pleased.
Es la primera vez que uso este producto. No es el original para mi cmara Sony pero el precio por dos bateras es muy correcto. Es posible cargarlas tambin con el cargador del movil
We are using this with our GFX 50 SII alongside two Fuji brand batteries. So far, they appear to perform the same, with one significant difference: the K&F Concept can be charged with a common charging cable. It has Type C Fast Charging, making it very convenient, especially when in the field. This is a brilliant feature. We wish all camera manufacturers would adopt this ability.
Permettono di essere caricate con usb-c, ormai standard anche nei telefoni ed in viaggio consente di portare un unico caricabatterie. Sul campo ottime, anche in condizioni di temperatura critiche (usate per fotografia naturalistica). Un’ottima alternativa alle batterie originali, con un surplus…se K&F mi volesse come tester dei suoi prodotti fotografici sarei contentissimo…sono tutti ottimi prodotti!
Got this to use in the Sony A7RII. Have a lot of spare batteries but the pain was to use a 2 battery at a time charger and take turns in getting them all charged. But with this self charging batteries, can simultaneously charge them all just have to find usb power bricks that’s plenty lying around. Or was thinking about using a powered usb hub. Brilliant.
The battery is well packaged and comes with usb-a to c charging cable. USB-C at the battery end. The original Sony NP-FW50 is 1020mAh but these are 1100mAh so that’s a bonus and would last a few minutes more.
Given these are less expensive than the original batteries they are a great value considering you don’t have to invest in separate chargers. Use the power bricks lying around or a powered usb hub that can deliver enough power. Yeah baby.
I absolutely love this new USB-C direct charging method for batteries. Yes, you will use more charging ports or outlets but this method allows me to charge my batteries via a battery pack.
I have always liked K&F Concepts products and have purchased my fair share of filters but this is my first battery order. Needless to say, these are a perfect fit for the Fujifilm X-T5 and report the same data that the factory batteries show.
Charging is on par with factory batteries when charged in the camera or in a 110v charger. As for charging them via USB-C, your charge time will vary based on the output of the wall wort or outlet you are using. They will take longer than in the camera or in a 110v charger, but the ability to charge on the go is what makes this concept work so well.
They came two in the package and each battery had it’s own usb-c cable but there is no wall plus included… you will need to provide your own. Not an issue for me as I have a 110v charger and prefer the usb-c to battery bank method.
Overall, I really like these batteries and hope to see other models of cameras start to come from the factory with this style of charging. It’s nice to have options to charge.
This battery is just as good as the OEM battery for photography. I can just about as many shots out of this battery on my X-H2 as i do with the OEM battery minus a handful. There is a slightly noticeable difference when running video on this battery as it gave about 20 mins less record time than the OEM. This wasn’t a scientific study and other factors may have played into the shorter runtime such as camera temp.
The white color of the battery is a nice touch to the traditional boring black batteries. This color makes your K&F battery stand out amongst the rest. The usb-c port allows for you to charge on the go without the need of a charging station.
I ordered this 2 pack of the K&F Concept 2400mAh NP-W235 Battery for my Fuji GFX100s.
When I take my GFX out for a full day of shooting, I have to take a boatload of extra batteries with me. The energy-hungry GFX uses the same low-capacity battery as the newer Fuji X-series cameras. I’m sure that the Fuji engineers chose to use this smaller battery (as compared to the battery found in the GFX50r) in order to reduce the size and weight of the 100s, but any advantage gained is, in my opinion, more than compensated for by the need to carry more batteries and a charger to charge them on.
These batteries don’t need a charger. You just use the included USB-C to USB-A cord. The USB-C end plugs right into the battery and the USB-A end goes to your favorite charging block or your car’s USB port. Honestly, it’s a technology that deserves to be adopted by all of the camera manufacturers unless they want their clocks cleaned by the quality third-party battery distributors.
It’s hard to directly compare the longevity of any battery with another, because every shoot is different. A shoot where I am using the LCD screen a lot is going to eat up battery power faster than when I rely only on the viewfinder. What I can say is that these batteries play nicely with the Fuji electronics. The camera throws no errors when using the K&F Concept batteries and properly reports their state of charge and capacity.
Although this is the first battery I’ve used from them, K&F Concept is a well-respected brand for camera accessories in general, and these batteries have the clever twist that the Lithium Ion charge circuitry is built into the battery, so no charger is needed. Despite that, THESE BATTERIES HAVE A VERY COMPETITIVE PRICE — less for these two than I paid for my first one with a built-in charger. There is a simple LED that lights red when charging and turns green when charged. The battery comes with a charging cable, but no USB power supply… which isn’t a big deal; the cable is a little unusual in that the USB C end clips into the battery a bit more authoritatively rather than just smoothly sliding in.
It used to be that 3rd-party smart batteries often were recognized as “fakes” by cameras which would then refuse to operate with them, and some camera models and firmware revisions are pickier than others. Over the years, I’ve amassed quite a collection of NP-FW50 batteries and clones, including several rejected by my newer cameras or even by my original NEX-5 after I updated the firmware.
Incidentally, the main reason I’m still buying more NP-FW50 is that I have a fleet of Sony cameras (NEX-5, NEX-7, two A6000, A6500, A7, A7II, and two A7RII) that take this battery and about half of the batteries I have eventually (after multiple years of use) started to swell a little, which is a major danger sign for Lithium Ion batteries. If your batteries are becoming a tight fit into your camera, they are swelling too and you should properly dispose of them.
Anyway, I’ve tried using this battery in my Sony A7RII, which is one of the latest and presumably pickiest models taking this battery, and, happily, it seems to work identically to the Sony-branded original batteries. It’s too early to say if this battery will hold charge as well as Sonys over time, but so far, so good. The battery fits the Sony cameras perfectly and has a distinctive two-color case, white on one side and gray on the other, which makes it easy to avoid confusing it with the ones that need a separate charger.
Overall, I think the concept of not needing an external charger is really good and worthy of a 5/5, although the benefit is reduced slightly by the fact that you still need to carry a USB cable to charge it. It does come with a charging cable, but it would be better if the battery itself had a pull-out USB head so you could just plug it directly into a USB power supply without the need for a cable. Unlike a very similar battery, there isn’t much of a price premium for these over other non-Sony FW50 batteries that don’t have a built-in charger. Thus, I very strongly recommend these…
So far this has been a very good third party battery for my GFX 100s. The camera tested it as “New” when I charged it and first put it in, and it gave me reasonably close to what I get from Fuji’s OEM battery. I typically buy another brand of batteries, have for years, and at least as a new battery, feel that this K&F is closer to the capacity of the OEM. But—I’ve only used it through two recharge cycles so far; so I can’t comment on ultimate life or how the capacity will decline with age.
So—the new features, to me, at least: A snap on bottom cover! After I got this, I searched Amazon to see if anyone was selling just these covers to fit onto the NP-W235 batteries, I’d love to buy them for all my batteries. The other main feature is that there’s no charging station—the battery includes a built in circuit to do this, and they include a cable (USB C!) (another nice surprise) that goes from any USB charging station directly into the battery. Now—this is either a positive or negative feature. You can also charge the battery in a regular charger.
It shouldn’t matter, but I also like the look of a white battery. I think every digital camera I’ve had for the past 30 years has had black batteries, so it’s just nice to see something different. The included cable is heavier duty than the usual “tossed in” charger cable. My sense is, after three K&F product purchases, that K&S is trying a hit a more select market niche, with the goal of becoming a well known, and respected brand.
A camera battery with a USB-C charge port built in.
A BATTERY WITH A USB-C CHARGE PORT BUILT IN.
This one is for Fujifilm X-T4, X-T5, X-H2, X-H2S, and I can’t even wrap my head around it. I’ve been bringing my charging block with me for as long as I can remember. It’s just one extra thing I don’t want to have to carry when I’m out in the field on assignment. Now, I don’t have to.
And this battery has almost the capacity of the official OEM battery. Almost, but these batteries generally last most of the day. It’s close enough. And already, I digress…
A CAMERA BATTERY WITH A USB-C CHARGE PORT BUILT IN.
Some things are just well-designed, built by photographers, for photographers.
This is one of those things.
Slightly lower run time than OEM, but worth it for the price. I do like the white closer for ease of finding in the dark. But the batteries have gotten dirty over time.
Unique color alternative to the original manufacturer batteries. The batteries fit and snap into the camera just like the OEM, they last quite a long time, the option of direct usb c charging is a welcome addition to any such batteries but the charging rate seems to be long, I do however enjoy the light to indicate the charging status. Recommended for the build quality and design.
The K&F Concept NP-FW50 battery is a professional quality replacement for Sony’s OEM NP-FW50 battery. And it is an awesome replacement!
The Sony cameras that use the NP-FW50 battery, including the A7rII that I own, are infamous for their voracious use of battery energy. And although these K&F Concept replacement NP-FW50, rated at 1100 mAH while the Sony OEMs are rated at 1020, only have about 8% more capacity, they have a shorter charging time, a number of convenient charging options, and a longer life between charges. With its USB-C charging input, it can be charged almost anywhere and with almost any charger in use for today’s current devices that has a USB output; that includes the original Sony plugin wall charger, car chargers, power banks, your phones charger, etc. And the cost of the K&F Concept 2-pack of NP-FW50 batteries is about a third less than a single Sony OEM battery.
Included with the batteries is a USB-A to USB-C charging cable for each, with a convenient cable wrap, a nice touch. There is a charging status light on each battery that is red while charging and turns green when the battery is fully charged. In one of the batteries that I received, rather than turning green when it is fully charged, the light just goes out. Not a big deal to me since the battery showed as fully charged in the camera.
Rather than a replacement battery for the Sony OEM NP-FW50, the K&F Concept Batteries are an upgrade.
K&F are renowned for making top quality and affordable photography equipment and this K&F NP-W235 is no different.
The K&F branded NP-W235 battery has an inbuilt charger meaning all I need to charge it up is a USB C cable (either USB A to USB C or USB C to USBC), eliminating the need to take a bulky battery charger with me, and this is a game changer for me.
The K&F NP-W235 battery takes around 2.5 hours to fully charge which is longer than using a conventional NP-W235 battery and charger however this is a trade off I am willing to accept for the convenience of the K&F battery.
This battery doesn’t last as long as the Fuji branded batteries, but this is to be expected and I have yet to find any third party branded battery that lasts as long Fuji branded batteries. It is evident I don’t get as many photos or as many video minutes per charge however the difference isn’t that great. Besides, these batteries are a fraction of the price of Fuji branded batteries so I’ll just get another one.
Many third party batteries are a poor fit and suffer swelling when hot. I have not experienced this using the K&F NP-W235 battery and it fits nice and tight, hence ensuring a good connection, but also easy to remove at the end of the session when it needs charging.
At 36.99 (at the time of review) these K&F batteries are a fraction of the cost of the Fuji branded batteries and are great value for money. One thing that is worthy of note is that number of shots/video minutes per pound is less than Fuji branded batteries.
Overall these K&F batteries are superb and highly recommended and when I need additional batteries I am going to go for these over Fuji branded batteries not least because of the convenience of not having to take a charger.
Disclaimer: I am privileged enough to be part of the Amazon Vine program and as such I have the opportunity request products that I would find useful/potentially buy to road test in exchange for an honest review. I am not paid for this and all of my reviews are unbiased and based on my own experience.