K&F CONCEPT 2100mAh EN-EL15 EN-EL15C Battery and Dual Slot Charger for Nikon ZR Z8 Battery Compatible with Nikon Z8 Zf Z7 Z7ii Z6 Z6ii D7500 D750 D850 D780 1V1 Camera

Charges slowly, but I wasn’t expecting lightening speed for the price. Both batteries charged overnight and worked well in both my Nikons. I used one on and off for several hours and it’s still at 90%. I’m not expecting perfection from an off brand at this price, but I’ll update if the batteries last less than 6 months.

These batteries are perfect for my Nikon Z6ii. The batteries have good life. The ability to charge them in the car via USB is a game changer on camping trips. Would purchase these again.

Good product

I have not usedcthem yet. The camera recognizes them. Will report after a trial shoot with them

After a month, these batteries are still performing as flawlessly as the OEM batteries. I can say that about other third party batteries I’ve tried, but these are exceeding my expectations, at a markedly better price point.

This is an update to a previous review. Previously, I rated the product 1 star because I couldn't get the batteries to charge and the charger appeared to be defective. After a couple of weeks (I was out of the country) the seller was able to reach me and offer to replace the product or receive a gift card (in addition to the refund I had already received thru Amazon). I chose to have the batteries and charger replaced since I have 4 camera bodies I used all the time and fresh batteries always come handy. The new batteries and charger arrived promptly overnight. After fully charging both batteries without any issues with the charger, I have been using the batteries non-stop on my cameras for three days now. The battery life appears to be just as my Nikon EN-EL15 batteries, delivering about the same amount of time and shots as the OEM Nikon batteries. They have performed well as the principal battery in-camera and as the primary and secondary batteries in the camera grips. The cameras (Nikon D7000, 7200, 500 & 750) have NOT given any error code because of the aftermarket batteries and the performance seems to be at/near the same level of the Nikon batteries. I am very pleased with the purchase so far and will continue to monitor performance in a qualitative basis as time progresses. Really happy with the customer support offered and their genuine desire and insistence to make things right. This K&F product is the third one I purchased and all have met my expectations at very reasonable cost.

K&F concept batteries and chargers always work with my older Nikon, and now proven with my new Nikon Z7II and Z8. I was a bit worried as I heard the Z8 can be picky about non-Nikon batteries, but they work like a charm! Last a good long time ago - I used them over the holidays on a couple of short shoots. No issues. Charging is easy. Because the charger is flat, it packs easily in the base of my small Molle bag. Highly recommend.

A good replacement for the original OEM name brand battery. The charger is intuitive and the fit and function is compatible with the original camera. I am satisfied with the purchace.