JYJZPB NP-FZ100 Battery and A7iii Battery Charger for Sony A7IV, Sony A7III, A1, Alpha A7RIII, A7R IV, A9, A9 II, A6600, A6700, Alpha 9S, A7R3 A7S III, A7 RIII Battery, 2 Pack

I love this thingI have Gopro battery chargers, insta 360 battery chargers, security cam battery chargers / etc but this is my favorite one. The case / charger is simple and durable. I love that you have multiple options to charge (though I only have used usb c).Really cool

Works great but does not work as power brook.

Amazing! So helpful! I had 8 hour photoshoot -and these batteries were life savior!!

The battery is good, but takes a while to charge while in camera compared to OEM battery. Since the case is included I still think this is a good buy, expect you should be conscious of which battery you have in camera, if you only plan to go out with one battery.

DB-FZ100the mechanical- looks well built; cover fits/closes well- batteries are held snug; required some force to "snap"/"unsnap"them in place; if battery surface is not parallel to case surface (that's where the force is needed), they're not in place and the charge light will not come on- card holder locks in place well; no instructions on how this locks so I was afraid i was going to crack something by pushing/pulling on parts; I found it easiest to pry (still somewhat difficult with larger fingers; I'm 5'5" with average hands) next to the card holder to flip the card holder; cards are held snugthe electrical- there is no internal battery to the case and I didn't expect one- the camera batteries supply power to be used as a power pack- the USB-C port is input only; used to charge the camera batteries within the pack; you cannot use this port to charge another device (plugging my Samsung, usb-c to usb-c, actually drains my phone to charge the camera batteries)- the micro USB port is input only; used to charge the camera batteries; you cannot use this port to charge another device- the USB-A is the only output port when this unit is used as a power pack; (It cannot fast charge or super-fast charge my Samsug phone using my own cable);- only a USB-A to USB micro cable is supplied; use this to charge the camera batteries in the pack; no adapter/charger is includedOverallThe worst of this product: no instructions whatsoever. No explanation of what to expect with the charge/discharge lights (lights are red when charging, green when fully charged; blue lights when discharging).Owned for 6 months now: they seem to stay in my camera for as long as the original Sony battery before swap out. I bought this for the batteries and charger. The power pack usage is a bonus which I don't intend to use unless an emergency arises. I use a small camera case, and the charger size could be reduced if a cover wasn't incorporated (just a tad larger than I would like). Would definitely buy again

Reliability is everything in client work, and this product just WORKS. After a year and then some of (almost) daily use powering an A6700 in nature and small-events professional work, these batteries have performed like champs, have never power-fluctuated while in use (which causes the camera to go crazy and overheat, something that happens with my A6000’s NP50 batteries when I let the NP50’s get below thirty percent), even when I use these batteries down to twenty five percent. However, keep in mind that the average shoot on these batteries is three hours, and, starting from a freshly-charged battery at 100 percent, I will usually still have 50 or 60 percent left by the end of the shoot, so I usually have lots more left in them when I get back home and recharge them again for the next day. The charger is the batteries’ carrying case, and the whole unit can double as a USBC power bank; although, I myself would never risk uncharging my camera batteries just to charge up a phone unless I absolutely had to. But it’s nice to know you can. What more could you ask for? HUGE five-stars.

Into my 3rd year and still kicking good.

I shoot professionally and on long jobs or gigs where I'm shooting a ton of photos, like sporting events, I chew through batteries pretty quick in my A7RV. I bought this setup thinking it would work 75% as good as my OEM batteries and as far as I can tell, they are just as good. They report the life to the camera just fine so I know how much longer I have on a full charge and the case works great for recharging. I liked these so much, I bought a second set.