Fogstar Drift Gen2 12V 668Ah LiFePO4 Leisure Battery Very high‑capacity 12V 668Ah LiFePO4 leisure battery delivering 8,550Wh of energy for serious off‑grid and commercial power systems. 300A smart BMS with Bluetooth monitoring, active balancing and built‑in heating for controlled, year‑round operation in demanding environments. Up to 4,000 cycles at 80% depth of discharge, designed to support long duty cycles in logistics, marine, welfare and industrial applications. Fogstar Drift 668Ah Gen2 LiFePO4 Leisure Battery The Fogstar Drift Gen2 12V 668Ah LiFePO4 leisure battery is built for large off‑grid systems that need reliable, long‑duration power from a single battery bank. With 8,550Wh of stored energy and a 300A maximum discharge, it can comfortably support sizeable inverters, refrigeration, tools and onboard systems in vehicles, boats and fixed installations as part of a correctly designed installation. EVE LF334 prismatic cells, integrated heating and a robust smart BMS make it a practical choice for mobile welfare units, marine house banks, off‑grid cabins and containerised power where uptime and predictability are key. Key features of the Fogstar Drift 668Ah Gen2 12.8V, 668Ah (8,550Wh) LiFePO4 leisure battery using EVE LF334 Grade A prismatic cells for stable, large‑scale energy storage. 300A maximum discharge and 300A maximum charge capability, suitable for high‑load systems when paired with appropriately rated cables, protection and control gear. Smart BMS with over‑current, over‑discharge and temperature protection plus 2A active balancing to maintain cell alignment over the service life. Built‑in heating pads to enable charging down to low ambient temperatures, powered from the incoming charge current rather than the battery itself. Can be linked up to sixteen units in parallel or four in series (up to 48V) for large off‑grid, marine and industrial systems; professional installation is recommended for multi‑battery banks. Ideal applications This 668Ah Gen2 LiFePO4 leisure battery is well suited to high‑demand off‑grid systems in campervans, motorhomes and specialist vehicles where long runtime and large inverter loads are required. It is also appropriate for marine house banks on larger yachts and workboats, remote site cabins, welfare units, telecoms support and containerised or skid‑mounted power solutions. For complex systems with multiple batteries, mixed charging sources (solar, alternator, generator) and larger inverters, we recommend design, installation and commissioning through our trusted partners or your preferred qualified installer. Technical specifications Cell Type: LF334 Cell Configuration: 4S2P Nominal Capacity: 668Ah Energy: 8,550Wh Cell Chemistry: Lithium Iron Phosphate Cell Nominal Voltage: 3.2V *4 (12.8V) Cycle Life: 4000 Cycles @ 80% DOD Maximum Discharge: 300A Nominal Voltage: 12.8V Standard Charging Voltage: 14.4V Maximum Charging Voltage: 14.6V Discharge Cut Off Voltage: 10V Discharge Temperature Range: -20°C - 55°C Charge Temperature Range: 0°C - 55°C Heating Function: 0°C - 10°C Storage: -20°C - 45°C (1 month) 0°C - 35°C (3 months) Measurements (LxWxH mm): 635 x 244 x 220 Weight: 56kg Housing Material: ABS Plastic BMS specifications Maximum Discharge: 300A Temperate Protection: Yes Overcurrent Protection: Yes Overdischarge Protection: Yes Max Charging Current: 300A Battery series and parallel mode Our 12V models can be connected sixteen (16) in parallel OR four (4) in series - to a maximum of 48V. Battery heating This battery has a built-in heater that heats the battery to 5°C to enable charging at low temperatures. The Drift heating pads are only activated when the battery is being charged, and are only powered by the incoming charge current, not the battery itself. If you put the battery on charge in cold temperatures, it will heat the battery first, and then allow current through to the battery when the temperature is safe enough to do so. Charging Your battery should be charged using a lithium iron phosphate battery charger. Bulk Charge: 14.4V Float Charge: 13.5V Charging Current: up to 300A Battery warranty Fogstar offers a 10 year warranty on all Fogstar Drift Leisure batteries. Warranties only apply to the original owner and are non-transferrable. Fogstar will verify your purchase prior to processing any warranty claims or returns. Please contact us at [email protected] as soon as you encounter any issues. Our warranty does not cover items that have been damaged due to gross negligence, normal wear and tear, damage due to accident or collision, abuse or incorrect installation. Download the Fogstar Drift App As a Fogstar customer, you'll also get the use of our fantastic Fogstar Drift App. Our App has been custom built to connect directly with the BMS, allowing you to manage and maintain the health of the battery at all times. The Fogstar Drift app is free to download on both Android and iOS. Active balancing All cells used in the Gen2 range are Grade A, factory-matched and balanced EVE prismatic cells. - supplied directly from the manufacturer. This ensures your battery begins life with optimal uniformity in capacity and internal resistance. The 2A active balancer is fully integrated within the BMS architecture, rather than implemented as an external module. It engages only when cell deviation exceeds the defined threshold of 0.015V, and operates with minimal power draw. The system maintains long-term voltage equilibrium across the pack without continuous current consumption, and without requiring any user intervention. UK expert support Energian provides UK‑based expert support to help you specify, integrate and operate Fogstar Drift Gen2 LiFePO4 leisure batteries in new or existing systems. Contact us by phone, email or live chat, or visit our office for an in‑person consultation, and we can also connect you with trusted installation partners where a straightforward drop‑in replacement is not appropriate. Documents available for download Fogstar Drift Gen2 12V 668Ah LiFePO4 Leisure Battery – Technical Datasheet (PDF) Fogstar Drift Gen2 LiFePO4 Leisure Battery – User / Installation Manual (PDF)
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