Mathorn MB-390 Ultimate 3400 replacement for VB30 & VB26

High-performance replacement for Godox VB30 & VB26 with USB-C charging and full backward compatibility

Designed for Intensive Use

The Mathorn Ultimate MB-390 battery is one of the most powerful replacement batteries for the Godox VB30 available on the market, offering a nominal capacity increased by over 14% compared to the original, reaching 3400 mAh. The battery is built using reinforced cells, capable of delivering up to 20 amps of current during fast burst shooting with flash. As a result, the Mathorn MB-390 provides rapid flash recycle times and enables continuous shooting at high flash power.

Fast, Safe, and Convenient USB-C Charging

Like all Mathorn batteries from the Ultimate series, the MB-390 is equipped with a USB-C charging port. All you need is a USB-C to USB-C cable and a phone charger or power bank to recharge the battery in the field, completely independent of a mains power source. Importantly, the battery supports the Power Delivery fast-charging protocol, allowing charging at up to 20 W.

Ideal for Wedding and Commercial Photography

Full compatibility with Godox flashes, low-power electronics, and advanced cell technology allow Mathorn batteries to achieve extremely low self-discharge—only about a 0.5% voltage drop per month. This makes the battery equally well suited for everyday professional use as well as occasional photo sessions.

Proven Quality and Performance

Mathorn batteries undergo rigorous testing using professional photographic equipment and laboratory instrumentation, ensuring full compliance with declared technical specifications. Each battery delivers real, usable capacity even under heavy load, providing confidence in durability and stable performance in real-world use.

Full Compatibility with Your Devices

The MB-390 model was developed as an advanced replacement for the Godox VB30 battery. However, thanks to identical physical dimensions and pin layouts, it is fully backward compatible with the older Godox VB26 standard (including VB26A and VB26B). This allows users of older flash generations to easily power their equipment while upgrading it with a significantly higher capacity and the convenience of direct USB-C charging. The Mathorn MB-390 battery is 100% compatible with the following Godox flash models: V1 Pro, V1, V100, V850 III, V860III.

The current compatibility list is available on the manufacturer’s website: LINK

Safety and Reliability Guarantee

Each Mathorn battery is equipped with advanced active and passive protection systems that minimize the risk of damage and extend the period of trouble-free operation. For complete peace of mind, all Mathorn batteries are covered by a 3-year manufacturer’s warranty.

Extended Service Life

The Mathorn MB-390 battery uses advanced chemistry, combining high capacity with stable and reliable operation. This allows the battery to achieve approximately 700 full charge and discharge cycles without noticeable performance degradation. The absence of memory effect enables safe partial charging, which in everyday use significantly extends battery lifespan.

Key Features

• High performance under intensive use, optimized for high peak loads during strobe photography
• Full backward compatibility – seamlessly replaces both the latest Godox VB30 batteries and the older generation VB26 / VB26A / VB26B models.
• Over 14% higher capacity compared to the original battery
• Extended lifespan of up to approximately 700 cycles thanks to high-current cell technology
• Capacity and performance verified in laboratory and real-world testing
• Extremely low self-discharge rate—only 0.5% per month—ensuring readiness even after long periods of storage
• Built-in USB-C fast-charging module (Power Delivery 20 W) with LED charge indicator
• Comprehensive thermal, current, and voltage protection, including protection against overcharge, over-discharge, and short circuit
• Durable housing made of self-extinguishing V1-class material resistant to high temperatures
• 3-year manufacturer’s warranty

Technical Specifications

1 - the rate of discharging of the battery stored at a temperature below 25°C and humidity up to 60%