12V 300Ah Pro Series – LiFePO4 Cranking & Deep Cycle Lithium Battery (Dual Purpose)

One battery. Two jobs. Built to crank hard and run long.
The 12V 300Ah Pro Series Dual Purpose battery is engineered for applications that demand both high-starting power and true deep-cycle endurance. It combines the fast surge capability needed for cranking with the large usable capacity and steady output expected from a premium lithium house battery—so you can simplify your system without sacrificing performance.

Designed for serious electrical loads, it delivers 300A continuous charge and discharge capability and massive starting bursts up to 1,000A for 5 seconds (and 800A for 10 seconds), making it a strong solution for high-demand engines, large inverters, and power-hungry onboard systems.

Dual Purpose Performance

This Pro Series model is built around LiFePO4 chemistry for stable voltage and efficient energy delivery, then tuned for dual-purpose use. The result is a battery that can provide strong cranking output while also supporting long runtimes for accessories, electronics, and house loads. If your setup has traditionally required separate starting and deep-cycle banks, this battery is designed to help consolidate and modernize the system.

High Output, High Confidence

With 300A continuous capability, this battery is built to handle sustained heavy loads without hesitation. When it’s time to start, it delivers strong short-duration bursts for cranking—helpful for demanding ignition events where quick current delivery matters most.

Victron Communications, Bluetooth & Self-Heating

The 12V 300Ah Pro Series is built for modern system integration and usability. CANbus communications allow a full string of batteries to interface into a Victron ecosystem for improved monitoring and coordinated system behavior. Bluetooth support enables monitoring through iOS and Android devices, and the BMS supports over-the-air firmware updates through the app to keep the system current over time.

Internal self-heating allows charging in sub-zero conditions, expanding usability for cold-weather environments where standard lithium charging is often limited.

Overview

• IP67 waterproof and dustproof protection
• iOS and Android app support
• 6,000+ cycle life
• Advanced smart BMS
• Internal heating for cold-weather charging
• Safe, reliable, maintenance-free operation

Advanced BMS Protection

The built-in smart BMS is designed to help protect the battery and connected equipment across real-world operating conditions. Safety features include:

• Over-current protection
• Short-circuit protection
• High- and low-temperature disconnects

The system is also designed with scalability in mind so you can expand capacity as your power needs grow.

Scalable System Design

• Up to (4) batteries in series (up to 48V)
• Up to (16) batteries in parallel

This makes it suitable for single-battery installs as well as large-capacity banks where extended runtime and high power are required.

Specifications

Description

LiFePO4 chemistry delivers stable, efficient deep-cycle performance with dual-purpose capability for cranking applications. This battery provides 300A continuous charge and discharge power and high-start bursts up to 1,000A for 5 seconds (800A for 10 seconds). Integrated CANbus supports Victron ecosystem communications for a full battery string, while Bluetooth monitoring works with iOS and Android devices and enables over-the-air BMS firmware updates. Internal heating supports charging in sub-zero conditions. The IP67-rated enclosure is dustproof and waterproof, and protection features include over-current, short-circuit, and high/low temperature safeguards. Designed for expansion up to 48V in series and up to 16 batteries in parallel, it delivers 6,000+ cycles, requires no routine maintenance, and is backed by an 11-year manufacturer warranty.