JYJZPB 2 Pack NP-FZ100 Batteries 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 Camera Battery, 2280mAh

Hands down one of the best products I’ve bought. I’ve been into photography for years, so I always need extra batteries—and this set is perfect. I love that it comes with two batteries, and the fact that I can charge them in the car or with a power bank while I’m out shooting is a total game-changer.Plus, the slots for SD cards are an awesome bonus—makes organizing and swapping cards way easier.Super reliable, super convenient. If you’re serious about your camera setup, you’ll want this in your kit.

Works great but does not work as power brook.

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

Realistically I would give these 3.5 stars. The case is made of plastic and feels cheap. I doubt the lid will survive a fall. I also hate the design of the SD card holder. It's a nice feature but it's a royal pain in the a$$ to open and I probably won't be using it because of that. I do like that the charger has a lid though. I can throw this thing in a camera bag and won't have to worry about the batteries falling out and having to dig around my bag for them. I also like that I can use it as a battery bank in case my phone starts dying The batteries themselves are surprisingly good though. They will definitely get through a full day of moderate shooting. And at the end of the day that's the most important thing. All in all this is a good buy. I haven't seen any other chargers with a lid that can be used as a power bank.

Few days in, happy with product and battery life.

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.

I bought this charger and two-battery combination for my Sony Alpha A1. It is one of those rare products that exceeded my expectations. I am an experienced wildlife photographer who travels internationally.1) It charged the two NP-FZ100-compatible batteries from their state-upon-delivery to full charge in about an hour, powered by my 9v/3A USB-C charger. This is Sony's recommended charger rating for charging the NP-FZ100 when it's inside the camera. The charging case does NOT include a USB charger...you'll have to provide your own.2) Contrary to some other comments, there IS an indication when the batteries are fully charged. There is a solid red LED for each battery when charging, and a solid green LED when charged.3) The batteries work flawlessly in my A1. There are no compatibility warnings and no startup delays or hiccups. (My current firmware is v1.20).4) The construction and appearance is fine in my opinion. No, it's not a "luxury product," but it's certainly not an embarrassment and it's rugged enough for my travel and use in the field.5) The SD card storage is for, uh, SD cards. I use CF Express Type A cards, and I can fit two of them in the storage compartment, however.I would buy this again, and would recommend it to other Sony photographers.

Seems to work fine.