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.

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.

The direct USB charge function is great when out and about

I used one today for the first time and I took 168 pics and about 5 minutes of video and I still have all bars on my battery indicator. Also, my XT5 can read the battery life just like the original. It shows "new".
I bought this for the usb charging feature and it is great, I do not have to carry the Fuji charger with me anymore on vacation.

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 batteries appear to work as well as the oem one's. I have had no issues with them.

Great battery

Easy to charge up.

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.