K&F Concept NP-FZ100 Replacement Battery and Charger Set, 3 Pack 2280mAh Battery & Triple Slot Charger for Sony A7iii, A7iv, FX3, FX30, A7C, ZV-E1, A9, A6600, Alpha 9, Alpha 9S, A9S, A7R3, A7R4 CameraClimatePartner certified

Highly recommended, absolutely perfect, worth every penny of my investment, I recommend it and would definitely buy it again. Very easy to use, very good quality, very durable, extremely functional. Thank you.

Used on A7R. These batteries work very well, about as many shots/charge as my original Sony battery. Very good value. Only time will tell how long they last before going faulty.

Nice batteries arrived 50% charged good charger station to. Only time will tell how these compare to Sony original ones

I've been using these for 3 weeks now shooting on my fx30 and I quickly realised they run out faster than my authentic sony batteries, when my sony battery is on 50 percent, these are on 25% so expect these to run down fast.This is a good value for money as a cheaper alternative with the charger but bare this in mind when buying.It functions just the same and it's the same size as the normal sony batteries.Just wish I would of knew what I did now, still 3 pairs will get you through a shoot so it's fine.

Good replacement for OEM batteries do the job they are meant to. Can't comment if they last the exact amount but seems to be as equal.

Batteries are recognised by the camera & show the percentage unlike many other third party competitors. Always choose these over any others!

Great value compared to genuine Sony batteries. Really pleased with the charger as well.

Having recently purchased a new Sony A7RV, I was looking for another battery. I came across these by K&F, and having had other products by K&F, thought I'd give them a try...especially as 3 of these these come in at almost exactly the same price as a single Sony battery.Absolutely perfect! Despite being third party batteries, my camera (which has the latest firmware), didn't display any errors or warnings. Battery life and build quality is as good as that from Sony. I really like the triple charger as the charge for each individual battery is shown and you could potentially charge everything from a high capacity power bank if you're on the road away from mains power.I haven't noticed any difference in shooting time - everything is absolutely on par with Sony - so I'll very happily recommend these to anyone who uses NP-FZ100 batteries.