Mathorn battery MB-310 Ultimate 3500 mAh - replacement battery for Nikon EN-EL18d

Higher capacity and reliable power for professional Nikon cameras

Mathorn MB-310 Ultimate is a premium replacement battery for the Nikon EN-EL18d, offering a high nominal capacity of 3500 mAh. Designed with professional photographers and filmmakers in mind, it provides an extended energy reserve and reliable power delivery during intensive camera use. It is ideally suited for sports and wildlife photography, photojournalism, and demanding video productions.

More power, greater freedom

Mathorn MB-310 Ultimate offers a capacity of 3500 mAh - over 6% higher than the original Nikon EN-EL18d battery and an impressive 40% higher than the previous EN-EL18a/b/c models. The increased energy reserve provides greater freedom during all-day shooting, sports event coverage, photojournalism, and extended photo sessions, reducing the need to reach for a spare battery or charger. The high-performance Mathorn battery also excels in power-intensive applications such as high-speed continuous shooting in RAW (NEF) format, continuous subject tracking with advanced autofocus systems, and high-resolution video recording, including 8K.

Premium LG cells

At the heart of the Mathorn MB-310 Ultimate are three LG INR18650 MJ1 lithium-ion cells. They feature high energy density, a maximum continuous discharge current of up to 10 A, and the ability to retain high capacity over an extended service life. This combination delivers high battery capacity while ensuring stable power delivery under increased load.

Compatibility with the Nikon system

Mathorn MB-310 Ultimate is a replacement battery for the Nikon EN-EL18d, designed for use with the flagship Nikon Z9 mirrorless camera and professional Nikon DSLRs that use previous generations of EN-EL18 series batteries.

Compatible camera models:

• Nikon Z: Z9
• Nikon D: D4, D4s, D5, D6
• Nikon D850 - with the MB-D18 battery grip*
• Nikon D500 - with the MB-D17 battery grip*
• Nikon D810, D810A, D800, D800E - with the MB-D12 battery grip*

* - When using the grips listed above, the Nikon BL-5 battery cover is required.

Protection circuitry and V-1-rated housing

The built-in protection circuitry continuously monitors the battery's operating parameters, protecting the cells against overcharging, over-discharging, overcurrent, and short circuits. The durable housing, made of V-1-rated flame-retardant material, provides additional protection for internal components during everyday use.

Key features

• 3500 mAh: over 6% higher capacity than the original Nikon EN-EL18d battery and an impressive 40% higher than the EN-EL18a/b/c models.
• Premium LG cells: high energy density and long service life.
• Stable power delivery: reliable performance even under increased power demands.
• Multi-level protection: safeguards against overcharging, over-discharging, overcurrent, and short circuits.
• V-1-rated housing: durable, flame-retardant material providing additional protection for internal components.

Technical specifications