Large-scale off-grid power built on the upgraded engineering and accuracy of Drift Gen2.

The Fogstar Drift Gen2 12V 628Ah LiFePO4 Battery delivers major capacity with refined accuracy, efficiency and durability. Every critical component has been upgraded for improved measurement precision, stronger power handling and reliable long-term performance.

If you’re running high-demand systems in campervans, motorhomes, boats, cabins or solar storage setups, this is the benchmark for ultra-high-capacity 12V power.

Fogstar are one of the only manufacturers to offer series Victron support. All batteries are shipped with parallel support as standard, but if you would like series communication support, please send us a message upon order.

Key Features

• 300A Smart BMS for High-Demand Systems:
  The next-generation 300A Battery Management System handles heavy loads with ease. Perfect for powerful inverter setups and demanding off-grid applications.
• 0.2A Shunt Accuracy:
  Drift Gen2 delivers highly accurate power monitoring, giving you tighter state-of-charge readings and more reliable system performance.
• Active Cell Balancer for Maximum Efficiency:
  A built-in active balancer keeps every cell perfectly aligned. This boosts efficiency, improves cycle life and maintains consistent output.
• Premium EVE Prismatic Cells:
  Built with Grade A MB31 EVE cells that deliver consistent performance, solid stability, strong safety and a long service life.
• Full Victron Plug-and-Play Integration:
  Drift Gen2 communicates cleanly with Victron systems for faster installation and more accurate system data.
• IP67 Waterproof and Dustproof:
  Fully sealed against water and dust. Ideal for marine installations, damp lockers and rugged environments.
• Bluetooth Monitoring via the Fogstar App:
  Track real-time voltage, current, SOC, temperature and more using the Fogstar Drift App for iOS and Android.
• Automatic Low-Temperature Heating:
  The built-in heater automatically warms the battery to a safe temperature before charging, protecting the cells in cold weather.
• Improved Hardware and Design:
  A custom lid, upgraded terminals and a physical on/off switch make installs cleaner and maintenance easier.
• Designed & Supported in the UK:
  Created by our award-winning engineering team with full UK-based technical support. Backed by a 10-year warranty.

Technical Specifications

• Energy: 8,038Wh
• Capacity: 628Ah
• Voltage: 12.8V LiFePO4
• Cycle Life: 8000 Cycles (80% DOD)
• Recommended Charge Voltage: 14.4V
• Max Continuous Discharge: 300A
• Cell Type: EVE Grade A MB31
• BMS: 300A Smart BMS with 0.2A shunt accuracy and active balancing
• Monitoring: Bluetooth via Fogstar Drift App
• Heating: Integrated low-temp heating
• IP Rating: IP67
• Dimensions: 635 (L) x 244 (W) x 220 (H)
• Weight: Approx 53Kg
• Terminals: M8 - 1.25 pitch - 12mm (bolts included).

System Configuration Options

• Connect up to 4 batteries in series for 48V systems
• Connect up to 16 batteries in parallel to increase total capacity