Nikon D810 - Manual (Page 23)

xxi
Use Only Nikon Brand Electronic Accessories
Nikon cameras are designed to the highest standards and include complex
electronic circuitry.
Only Nikon brand electronic accessories (including
chargers, batteries, AC adapters, and flash accessories) certified by Nikon
specifically for use with this Nikon digital camera are engineered and proven
to operate within the operational and safety requirements of this electronic
circuitry.
The use of non-Nikon electronic accessories could damage
the camera and may void your Nikon warranty.
The use of
third-party rechargeable Li-ion batteries not bearing the
Nikon holographic seal shown at right could interfere with
normal operation of the camera or result in the batteries overheating,
igniting, rupturing, or leaking.
For more information about Nikon brand accessories, contact a local
authorized Nikon dealer.