Sony - NP-FZ100 Rechargeable Lithium-ion Replacement Battery

This is a much better battery than the one that came with my a7 several years ago.

Nothing better than the real thing - after market batteries have let me down in the past. Stick with name brand and always get the shot.

OEM product. Charged right up no issues. Haven't used it much yet as it was a backup battery. Walmnart good price and fast shipping.

I bought this as a 2nd battery for my A7iii, as a backup. And with these two batteries I can easily go on shooting all day with a very substantial amount of video too, without any stress about battery life. Definitely a must buy. Sony's best battery.

Bought this not knowing much and I've been so impressed by how its held it's charge and how fast it is to charge! Such a good battery

God sent!. This is definitely the one of Sony best improvement. Able to use for the whole day shoot (over 1200 shots) and still have 33% left in usage.

Good physical design including camera interface, good energy density and reliability. Would be good if serial numbers were able to be used to uniformly spread useage/charge cycles across battery inventory (even if there was an inscribable panel to record date of purchase etc)

This battery seems fine, works well. Only time will tell if it maintains it charge and battery life.

I would give this 0 stars but it's not an option. The battery was supposed to be delivered with 79% battery but it was dead when I put it in the camera. So I thought “eh things happen, I'll just charge it.” Nope, the battery was fried and wouldn't even charge. So I waited 3 days to get it and it was dead and not usable. I'm glad I tried it before I had to use it for my job.

I purchased this battery from the third-party seller Pharmapack at a price that seemed too good to be true. It turned that it was, because they sent me a counterfeit battery! The packaging and the battery itself were quite accurate, so look closely at the holographic sticker compared to the one that came with your camera. When viewed from the left side, you should see an L. From the right side, you see an R. Look at it straight on, and you should see the serial number. In addition to the hologram not working as expected, he sticker on the fake battery had four little notches and was put on crooked. Walmart agreed to a return/refund, but I hope they'll keep a closer eye on these sellers in the future.