FirstPower EN-EL15 /EL15a/EL15b/EL15c Batteries 2-Pack and USB Dual Charger Compatible with Nikon Z6 Z7 D750 D850 D7000 D7100 D7200 D7500 D500 D600 D610 D780 D800 D800e D810 D810a Cameras

Nice to have an extra charger I can use anywhere.

Batteries work perfectly in my Nikon Z6iii and the charger works with both the Nikon batteries and the First Power batteries. Since I just received the camera today I have no idea about the longevity of the included batteries, but I will compare them carefully with the two OEM Nikon El-En15c batteries that came with the camera.

UPDATE: I received a replacement and it works as expected. The customer service at First Power turned out be excellent so I’m changing my rating to 5 stars. The batteries that came with the charger took a full charge as did my old batteries. In addition the red and green indicator lights were clearly visible.The batteries that came with the charger only partially charged after a couple of hours and then the charger turns off. I tried the Nikon battery that came with my camera and this also did not charge fully.

It does what it is supposed to do, but the batteries didn't come with end caps to protect the batteries from shorting out.

Happy with batteries. Seem to work good.

Works as expected.

So far they're work great.

UPDATE: Full Disclosure-testing done using Nikon D780 "Hybrid" DSLR using Nikon OEM EN-EL15a, EN-EL15b, EN-EL15c and First Power EN-EL15 3rd party batteries. FirstPower reached out after my first review and 100% standing by their products, they sent a complete new package to replace 1 defective battery out of the 2 pack + charger I originally ordered (see original review below). Mind you, I did not ask for a replacement as I was satisfied with my 1 good battery at this price point. KUDOS FIRSTPOWER! So curious, I decided to grab a handful the ten EN-EL15 series batteries accumulated since buying a Nikon D750 in 2015 to compare against the FirstPower, replacement batteries over a few days of shooting and video recording events. My original & oldest EN-EL15's may be toast as they were good for probably an average of 1000 +/- 100 shots (also depends on if using a zoom lens and zooming in and out). My more recently accumulated EN-EL15b's & c's were good for 1900-2230 shots using prime lenses, no flash. I only tested one of the brand new, FirstPower EN-EL15's fully charged using their provided charger and to my surprise, I was able to click off 2193 shots using a prime lens and no flash! That's much better than the 75% of OEM battery shot count in my unscientific review below. This means that in my use, a brand new, fully charged FirstPower EN-EL15 lasted longer than my older, Nikon, OEM EN-EL15 and 15a's, and lasted as long as my OEM EN-EL15b's and c's. FYI; the earlier Nikon EN-EL15's are 1900mAh and the EN-EL15c's are 2280mAh. The FirstPower EN-EL15 is listed at 2300mAh. If I remember, I'll post another update after I've cycled the FirstPower replacement EN-EL15's through a few charge cycles to see if they last as long as when brand new. So my overall impressions are that 1) FirstPower fully backs their product and 2) a brand new, fully charged FirstPower EN-EL15 replacement battery lasts as long as my Nikon EN-EL15b and EN-EL15c batteries that are not brand new! Definitely satisfied, especially at this price point!ORIGINAL REVIEW: ("Budget Batteries, Budget Performance"), One of the two EN-EL15 batteries works fine and seems to hold a charge and last about 75% as long as Nikon OEM batteries; however the other unit failed after initial charge and use. It would not charge back up using the battery charger included not my Nikon battery charger. At least I still use the dual battery charger to charge up multiple, 3rd party batteries at once. I'll keep charging Nikon OEM batteries using the Nikon OEM charger. As an event shooter, I go through a ton of batteries covering a single event so always have 4 to 6 on hand!