K&F Concept 2 Pack NP-F970 Battery with LED Charger, Compatible with Sony NP-F550 F570 F750 F770 F930 F950 F960 F970, High-Power LED Lights, Monitors, Camera Sliders, and More

This product comes inside of a cardboard box; once opened, you'll find 2x NP-F970 batteries and a charger; they contain 6600 milliamps, which is enough to use most video lights for a while (mine will last about 4 hours per battery with continuous use). The product is high quality and very useful, especially if you are taking photos/videos with more than one video-lights that needs swapping.

The products are very high quality, and I like that they come with a charger, which lets you keep them up and running when taking photos.

I would recommend this product.

I like that the charger is a straightforward drop-in solution and the batteries fit in securely; I did not have any difficult charging the batteries with the included USB-C cable. It's nice that the charger has an additional micro USB port as an alternative cable charging option.

Areas of improvement:
- I wish the charger had a display with percentage reading instead of a red LED that turns green; it would give me a better gauge on how much longer I need to charge and manage my time around charging cycles.

I did run into a compatibility issue with my F400 Pro field monitor where the battery pack locks in; I noticed that the spacing for the locking tab is offset by a few millimeters. I will probably need to do more comparison testing with Sony equipment to see which of these non-OEM batteries fit better.

Overall, the construction of the batteries and charger feel well built; None of the plastics felt too brittle and the rigidity is acceptably. I did not see any physical damage nor imperfections with the finishes.

This is a two pack of Sony NP-F970 compatible rechargeable (LiIon) batteries. It also includes a USB powered 2-channel battery charger.

The batteries exceeded my expectations (and the 47.52 Wh rating on their nameplate), running my 20 watt lights for 3 hours and 10 minutes before shutting down. It took around 72 Wh to recharge each battery, and even at an 80% efficiency rating, that's still a capacity close to 57 Wh per battery. So I feel confident in saying that they will meet their 47.5 Wh rating over the first year or two of their life with no problems.

They snapped into and fit my battery charger and lights perfectly, so no problems with fit and finish.

They do NOT have extra features I've seen in some other 3rd party NP-F970 style batteries, such as an on battery power gauge or built in USB charging port, so you need to have an external charger to recharge them. (Or get an idea of their current charge level.)

The 2 pack includes a small and lightweight USB powered charger and a USB-A to USB-C cable. [The charger accepts either a USB-C cable or a Micro-USB cable.] The package does NOT include a USB power supply, so you will need to provide your own USB-C power adapter (or a USB-A [rectangular] outlet capable of providing 5 volts at up to 2 amps). The USB-C port on the charger supports and successfully negotiates USB-C power delivery (PD) but only supports a 5 volt input level. So the charger steps up the 5 volts at 2 amps input to the 8.4 volt charging voltage needed by the battery. With a single battery, it can charge at 700 mA @ 8.4 volts, or 6 watts, and with both batteries plugged in they each get 500 mA @ 8.4 volts, or 4.2 watts each.

As you can tell by the small watt numbers, this is a slow charger. In fact, it takes this charger about 16-17 hours to fully recharge both batteries from a completely empty state. It works fine, meets all of it's specifications, but is only suitable for very low duty cycle charging. If you just need to keep the batteries plugged in to make sure they are ready to go when you are, and can handle recharging taking overnight or longer, it will meet your needs. However, if you need to recharge these batteries quickly or cycle them fast for continuous usage, you'll need a faster charger. I would consider this charger a "bonus" and not the main part of the package.

In my opinion, the two batteries alone justify the price, although if you don't already have a faster external charger, you may wish to consider batteries that include a built in USB-C charging port and a LED "fuel gauge" built in.

Great for my display screen

As described. Fast delivery. Works perfectly

Good option

Very good battery for the price/quality ratio, not bad!

So far all good. Works perfect with my light stick that works with np-f750 type batteries.

Super Produkt zu einem super Preis. K&F macht es halt richtig

WORKS AS EXPECTED.