2 Pack NP-FW50 Battery with Type-C Fast Charging for Sony ZV-E10, Alpha 7, A7, A7II, A7RII, A7SII, A7S, A7S2, A7R, A7R2, A5000, A6400, A6500, A6300, A6000, NEX-3, NEX-5, 1100mAh

Using my NEX camera body with original charger and cable.
Not useful at all, as I can only charge while battery is in the camera.
Needed a way to charge batteries externally.

Picked out the 2 pack version.
This includes: 2 1100mAh rechargeable batteries, 2 charging cables, 2 instruction sheets.
Charging cables are 24" from end to end, with a built in hoop and loop strap.
USB-C at the camera end and USB-A at the charging end.
The batteries are white on the front and sides.
USB-C port is on the front along with the built in charging LED.
Back is gray and has the information label.

Charging.
Connect with the provided charging cable.
Plug into the battery charging port.
This port can only be accessed out of the camera.
Power bank was my preferred way to charge the batteries.
LED color is red while charging. Green when fully charged.
Side note.
The batteries will also charge inside the camera using the OEM NEX charger.

Overall.
High quality replacement NP FW50 batteries.
Batteries are easy to find as they are white and gray in color.
Include USB-C to A charging cable with built in hoop and loop strap.
Nice long run times while using in the camera.
Very low drainage while sitting in camera for long periods of time.
I prefer these over the OEM and I can charge outside of the camera.
Hope this was helpful.

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...

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’ve become a fan of K&F; they have proven themselves to be a serious player in the photographic and videographic markets with professional quality accessories across a broad spectrum of the marketplace.

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.

TL;DR - you are paying a premium of both price and battery capacity but gaining the ultimate travel convenience of not having to bring a separate charger.

CONs:
- More expensive than other aftermarket batteries. Of course still way cheaper than Sony OEM batteries.
- slightly less battery capacity than other batteries. This makes sense since the volume of the charging components take up space that could have otherwise been battery.

PROs:
- Ultimate travel convenience of being able to charge up your batteries with the same cable that you charge your phone with.
- Comes with USB-C charging cable.

What more can you say. My old Sony Nex works with at as well as my trusty A6000. Only time will tell of its longevity.

The direct USB charge function is great when out and about

I think these are the first batteries I've used where I truly feel that they're better than the original batteries. My Sony A7RII is notorious for having poor battery life so I always use a vertical grip with mine. It may be due to age but my Sony batteries never lasted very long and typically, by the time I take 200 shots, I'm already on my 2nd battery.

I've only had these batteries for short while but I was surprised to find that I was still on the first battery after 200 or so shots. I compared the weight and the ratings for these batteries and these weigh 5g more than the Sony ones (probably related to larger cells and usb-c charging mechanism) and are rated for 1100 mah vs 1020 mah. And with the convenience of charging these in multiple ways, whether it's via charger or usb-c, this is a no brainer purchase. So far, these have been longer lasting and better than the original. Very impressive!!

Great Idea!!!, comes with USB-C cable for each, no more charging block!!!! Charges faster than my Sony batteries too. The batteries have a LED that lights up red while it is charging and when fully charged it turns green.

These may not last as long as one but they didn't cost as much as well I also like the fact these can be charged in the standard way and with usbc as well

These replacement batteries fit my SONY ZV-E10 perfectly. They are almost identical in dimensions to the SONY OEM and the K&F has a bit higher capacity than SONY. No error messages from the camera when in use. The big advantage with these is that you. can charge directly via USB-C making the process of recharge much easier and more convenient. This type of replacement battery pretty much lets you keep shooting all day long as long as you have an adequate power bank to continually charge these. I would never go back to batteries that do not have the ability to charge directly.