Has anyone tried or can recommend an aftermarket battery for the Z8. My wife just received hers today and we are weighing options after finding out the original en-el15 does not work in the Z8. All opinions are welcome, especially if you think it would be a mistake!
SIMPLE ANSWER its a Mistake,
Just buy the genuine recommended Nikon battery for the Z8, history has proven over and over that while some aftermarket batteries work, there never as good, or as reliable or lasting in the number of charge cycles as the original Nikon batteries.
Further more the power specs can differ regardless of the claims and yes they can fall short after a few uses.
If you look at the many Nikon battery's it says the cells are made in Japan and shipped to China for the casings, WHY, its obvious, the heart for the battery is the cells for consistent specification and performance, usually a lot of things made in China contain more recycled materials or lower grade materials to deliver price.
Many people have used after market batteries and are happy with them more so in the DSLR days, new mirror less cameras are so computer orientated and the internal IS on the sensor is sensitive, you may or may not do long term damage if you have a off spec battery.
Regardless of being a genuine or after market battery, be careful to note if one battery gets hot while charging and another doesn't, that hot battery indicates that battery may not be the healthiest long term, with sophisticated high tech new cameras off song batteries may effect the electronics or the stability of the operating system in the camera.
If you can afford a Z8 and new Z glass i cant for the life of me understand anyone even considering after market batteries. You get what you pay for, that said many after market batteries do fine to a point, again we are now in the mirror less world using computers to take photos not just cameras, you need clean stable reliable power.
Its very important to only use good spec quality batteries and even cards in these new cameras, more so than ever before.
Only an opinion