The design of a battery grip offers a comfortable and secure way in which to hold your DSLR, especially in the vertical position. A tripod socket is included as is a holder for the camera's contact cover so as not to lose it when it has been removed to install the battery grip.

Holds one EN-EL15 battery (not included), doubling the battery life and shooting time for the Nikon D800, D800E or D810 DSLR.

Provides comfortable and secure handling when shooting in the vertical position, including a secondary shutter release button and secondary AF-ON button, multi selector, main command dial and sub-command dial.

Features anti-slip rubber gripping and a securely locking battery chamber door.

Provides a space to hold the camera's contact cover to prevent its loss.

Power Source: 1 EN-EL15 Lithium-Ion battery or 8 LR6 Alkaline, HR6 Ni-MH or FR6 Lithium AA batteries
Operating Temperature: 32-104° F (0-40° C)
Dimensions: Approximately 5.9 x 2.2 x 3.1" (150.8 x 54.8 x 77.4 mm)
Weight: Approximately 9.6 oz (272.2g), with EN-EL15 battery holder but excluding batteries

Note: To fix battery connectivity issue, please follow the below mentioned steps.
Step 1: Please use freshly charged, good quality EN-EL15 type batteries, that where installed properly per the Manual.
(Use of AA type batteries requires additional settings in order for the battery status to reflect properly.)
Step 2: Please make sure all manual's instructions on installing, setting, and using the product are properly followed.