Barely Works with Nikon D810
I bought this instead of the crazy expensive [[ASIN:B0076UXKDG Nikon MB-D12 Multi Battery Power Pack]]. This Vivitar pack is $250 LESS than the Nikon pack. Though all my lenses and batteries are Nikon-branded, I was willing to cut corners on the battery pack and grip. Big mistake.<br /><br />This Vivitar pack doesn't always fully engage with camera. It only works about 20% of the time. I've had numerous, reoccurring problems getting it to supply power to the camera using both the AA tray and the EN-EL15 tray. I can sometimes wiggle the battery pack or unscrew it and screw it back on to get the camera to recognize the pack but not always. I've tried [[ASIN:B00MXCIK32 Panasonic Eneloop Pro AA Batteries]] as well as typical alkaline batteries. I've tried Nikon-branded EN-EL-15 batteries and generic equivalents.<br /><br />I just got back from a ten-day trip the the American Pacific Northwest in winter. I bought this battery pack because I knew I'd be out hiking a lot away from a battery charger. That, plus reduced battery capacity because of the extreme cold meant I was going to need more power than the internal battery. You can imagine how frustrated I am having carried this Vivitar pack on planes and with my gear all over Mount Rainier and Mount Hood just to have it never work right.<br /><br />I'm returning the Vivitar battery grip pack today. Before I give up completely or buy the Nikon MD-D12, I'm going to try another third-party pack. Given the horrible experience I just had with the Vivitar grip, I'm not even willing to give a replacement unit another try.
Rating: 1 stars