B07NZXT5MP Battery Grip Kit for Nikon D850 Digital SLR Camera – Includes Qty 1 BM Premium EN-EL15 Battery + MB-D18 Replacement Battery Grip

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Effectively Doubles Your Shooting Time – Vertical shutter release & scroll wheel – Significantly improves stability
Holds one EN-EL15 battery (an additional battery can be used in the camera) – Holds 8 AA batteries for added convenience
Battery Specifications – Energy Storage Capacity: 2200 mAh /Voltage: 7.0 volts /WH: 15.4Wh, Chemistry: Li-ion – New fully decoded chip works just like the original.(gives time left and does not need a special charger)
Battery kit has a one-year warranty – 100% Safety Guarantee: Built with multiple circuit protection (over-charging, short-circuit, high-temperature, and surge protection), and high-quality, fire-resistant construction