These are great, well the whole kit.
I use a Sony A7iV and I never seem to have enough battery life left when I pick it up to use, especially for street photography.
With these extra batteries I can have them charged up and ready to go and they give me more than a full day's shooting - or extended periods of video recording.
They seem to last as long as the original and work exactly as you'd expect. Good value for money as well, compared to a Sony original.
I use a Sony A7iV and I never seem to have enough battery life left when I pick it up to use, especially for street photography.
With these extra batteries I can have them charged up and ready to go and they give me more than a full day's shooting - or extended periods of video recording.
They seem to last as long as the original and work exactly as you'd expect. Good value for money as well, compared to a Sony original.
09/12/2025
This is an EVALUATION REVIEW for SET charger and 2 COMPATIBLE batteries for various ranges of MIRRORLESS cameras and camcorders of the SONY brand, sold on AMAZON with the description:
K&F Concept NP-FZ100 2x2600mAh Battery and Charger, Compatible with Sony A7iii, A7 III, A7iv, FX3, FX30, A6600, A7C, A6700, A7RIV, A7Siii, ZV-E1, ZV-E10ii, Alpha 9 II and A9S.
The fit and load recognition in the camera body are perfect, at least in Sony A7 III and A9 versions. The charger is slow but it is something that seems normal to me, since the batteries support up to 2600 mA of charge and it is a compact and small double charge adapter/controller (an additional power supply is needed to supply it with 5v and at least 2.5 A. of current), a recommended power supply of at least 15 W. of power, either an AC power adapter converter (220v.~240 v. AC > OUT USB-A (with the supplied cable) USB-C/(Micro Usb) if it has a direct output or we have USB-C > USB-C wiring, with 5v. 3A. DC.), or a 12 ~ 24 V. DC vehicle power supply. > Also USB-A (female base) or USB-C wired output, even in travel circumstances without the possibility of an electrical network or vehicle cigarette lighter socket, we could use a POWER BANK of large format and power to power the battery charging adapter. The fact that the charges are slow doesn't worry me much because like most people I suppose I usually leave the batteries charging at night when I don't have the camera in use and pick them up from the charger in the morning, and thanks to this charger I don't have to charge the battery through the camera or charge one and after finishing waiting to change it for the other, I put them both in the accommodation bays and forget about it until the next day. It also has a separate light charge indicator for each battery.
As a compensation for slightly slow charges, we have the advantage that the batteries provide us with very good battery life thanks to their 2600mA/h of charge, providing almost 19 W/h.
Taking into account the good performance they have been providing me for some time and the good selling price of the set, in addition to the trust given to me by this brand (K&F) that I already know and have other items, I have decided that my rating is the highest in its category and therefore I give it: "5 STARS" = [* * * * *].
I hope you find this review useful, happy shopping. Kind regards.: *)
K&F Concept NP-FZ100 2x2600mAh Battery and Charger, Compatible with Sony A7iii, A7 III, A7iv, FX3, FX30, A6600, A7C, A6700, A7RIV, A7Siii, ZV-E1, ZV-E10ii, Alpha 9 II and A9S.
The fit and load recognition in the camera body are perfect, at least in Sony A7 III and A9 versions. The charger is slow but it is something that seems normal to me, since the batteries support up to 2600 mA of charge and it is a compact and small double charge adapter/controller (an additional power supply is needed to supply it with 5v and at least 2.5 A. of current), a recommended power supply of at least 15 W. of power, either an AC power adapter converter (220v.~240 v. AC > OUT USB-A (with the supplied cable) USB-C/(Micro Usb) if it has a direct output or we have USB-C > USB-C wiring, with 5v. 3A. DC.), or a 12 ~ 24 V. DC vehicle power supply. > Also USB-A (female base) or USB-C wired output, even in travel circumstances without the possibility of an electrical network or vehicle cigarette lighter socket, we could use a POWER BANK of large format and power to power the battery charging adapter. The fact that the charges are slow doesn't worry me much because like most people I suppose I usually leave the batteries charging at night when I don't have the camera in use and pick them up from the charger in the morning, and thanks to this charger I don't have to charge the battery through the camera or charge one and after finishing waiting to change it for the other, I put them both in the accommodation bays and forget about it until the next day. It also has a separate light charge indicator for each battery.
As a compensation for slightly slow charges, we have the advantage that the batteries provide us with very good battery life thanks to their 2600mA/h of charge, providing almost 19 W/h.
Taking into account the good performance they have been providing me for some time and the good selling price of the set, in addition to the trust given to me by this brand (K&F) that I already know and have other items, I have decided that my rating is the highest in its category and therefore I give it: "5 STARS" = [* * * * *].
I hope you find this review useful, happy shopping. Kind regards.: *)
06/12/2025
I've consistently found K&F Concept accessories to be reliable, and this dual battery charger kit maintains that standard. The kit includes two NP-FZ100 equivalent lithium-ion batteries, fully compatible with Sony Alpha series cameras, along with a USB Type-A to Type-C charging cable for flexible power input. The charger supports parallel charging with independent monitoring, aided by a clear LED display that tracks each battery's charge status in real time. In testing, both batteries were charged from zero to full in approximately 3 hours, delivering efficient performance suitable for on-the-go workflows. The entire set arrived well-packaged with a neat, professional presentation.
04/12/2025
2 batteries and charger, great value for money. I have to test the longevity of the batteries first, but so far everything is great
01/12/2025
The two batteries provide noticeably more endurance than many older replacement batteries, meaning that longer photo or video tours are possible without constant recharging. The compact charger fits easily into the camera bag and charges both cells quickly, which is particularly handy when out and about. Compatibility with common full-frame and APS-C models ensures that changing the camera body does not require a new battery system. It is positive that the remaining display in the camera is read out cleanly and there are no error messages. During operation, the temperature remains unobtrusive, even during continuous shooting or longer 4K clips, which creates confidence in cell quality. The only wish would be an enclosed transport bag or protective caps to protect the contacts in the backpack even better. Overall, a solid set with a strong price-performance ratio for photo and video projects.
28/11/2025
The batteries in a pack of 2 have proven to be real workhorses for my Sony Alpha.
With 2600mAh, they offer noticeably long running times, which is extremely practical, especially for longer shoots or on the go.
The workmanship looks robust and high-quality, nothing rattles or feels cheap.
The charger also makes a stable impression and charges the batteries reliably and relatively quickly.
When in use, the batteries deliver constant power without unexpected breakdowns and retain their capacity very well even after several charging cycles.
For me, they are a fairly priced and durable alternative to the original batteries.
With 2600mAh, they offer noticeably long running times, which is extremely practical, especially for longer shoots or on the go.
The workmanship looks robust and high-quality, nothing rattles or feels cheap.
The charger also makes a stable impression and charges the batteries reliably and relatively quickly.
When in use, the batteries deliver constant power without unexpected breakdowns and retain their capacity very well even after several charging cycles.
For me, they are a fairly priced and durable alternative to the original batteries.
26/11/2025
Good value battery and charger kit. The batteries perform as well as the OEM ones do. The charger charges the batteries well and features an indicator as to whether the batteries are fully charged or not. Powered by provided USB cable, which is handy as it can be charged in any wall outlet, power bank, computer etc. Good value for money over the OEM batteries.
23/11/2025
K&F Concept NP-FZ100 2600mAh Battery and Charger Set, Compatible With A7iii Battery A7 III, A7iv, FX3, FX30, A6600, A7C, A6700, A7RIV, A7Siii, ZV-E1, ZV-E10ii, Alpha 9 II, A9S Cameras
Anyone familiar with K&F products know that you're getting a quality product for a fraction of the OEM price. These are substantially cheaper than the Sony equivalent without any loss in performance.
In the box you get 2x 2600mAh NP-FZ100 batteries, a twin slot mains charger and a USB power cable. All are well made and work really well too. Good value for money
Anyone familiar with K&F products know that you're getting a quality product for a fraction of the OEM price. These are substantially cheaper than the Sony equivalent without any loss in performance.
In the box you get 2x 2600mAh NP-FZ100 batteries, a twin slot mains charger and a USB power cable. All are well made and work really well too. Good value for money
22/11/2025