Offgridtec LifePO4 battery 12/300 12.8V 304Ah with BMS and heating mat 3891Wh

The Offgridtec LiFePO4 12/300 battery with heating mat (MPN 020720) is a state-of-the-art and efficient energy storage solution. With a capacity of 304 Ah and a nominal voltage of 12.8 V, it ensures both safety and outstanding performance. Thanks to its compact and maintenance-free design, the battery is easy to install and can be flexibly integrated into custom energy storage systems via parallel connection. Equipped with an integrated battery management system (BMS), the battery is protected against overcharging, deep discharge, short circuits, and overheating. This not only extends the battery’s runtime but also enhances safety during operation. The high-performance battery boasts a lifespan of up to 4,000 charge cycles, ensuring you can enjoy a reliable power supply for years to come.

The battery also features an integrated heating mat that ensures optimal performance even at low temperatures. This heating mat prevents the cells from freezing and guarantees reliable power output even under extreme climatic conditions. This maximizes the battery’s efficiency and lifespan, allowing it to serve as an effective energy solution even in cold environments.

The LiFePO4 12/300 Battery at a Glance

• Integrated BMS with numerous protective features
• Integrated heating mat
• Long service life: 4,000 cycles
• UPS, emergency power supply
• Higher performance
• Superior safety
• Increased flexibility
• Up to 4 in parallel
• Low self-discharge
• Fast charging, 98% high power density

Advantages of the integrated heating mat

• Protection against damage during charging: LiFePO₄ cells must not be charged below 0 °C, as this causes lithium plating. This results in permanent damage to the battery and can drastically shorten its service life.
• Maintenance of charging capability: To enable charging even at cold temperatures, the heating mat warms the cells to a safe temperature.
• Optimization of performance: Cold reduces the usable capacity and power output of the battery. A heated battery can deliver more energy and operate more efficiently.
• Use in cold environments: Especially in RVs, off-grid systems, or electric vehicles, the battery is often exposed to sub-zero temperatures. An integrated heating mat ensures that the battery functions even in winter.

Integrated BMS

The LiFePO4 offers automatic protection through its internal battery management system. The lithium iron phosphate chemistry eliminates the risk of explosion or fire due to severe impacts, overcharging, or short circuits. By precisely controlling these parameters, the BMS ensures optimal battery utilization and extends the battery’s lifespan.

• Overvoltage protection
• Undervoltage protection
• Overload protection
• Short-circuit protection
• Protection of cells against excessively high or low temperatures

Applications

• Renewable energy systems, such as photovoltaic and solar systems
• Vehicles, such as motorhomes, trailers, and campers
• Marine applications, such as fishing boats and electric boats
• Uninterruptible power supply (UPS, emergency power) for emergencies

Parallel Connection

The parallel connection of our LiFePO4 battery offers you increased flexibility. With the modular design, you can use up to four batteries in series and four in parallel for the 12.8V versions. This allows you to easily adjust the capacity and power of your system.

LiFePO4 Technology

A LiFePO4 battery stands for "lithium iron phosphate battery" and is a type of lithium-ion battery. It is characterized by a specific chemical composition in which lithium iron phosphate is used as the cathode material. These batteries can undergo thousands of charge cycles, resulting in a longer overall lifespan compared to other battery types. They are considered safer than some other lithium-ion batteries because they are less prone to overheating or thermal instability. Furthermore, they offer a constant voltage and power output throughout most of their discharge cycle, a high discharge rate, and a low weight.

Advantages of LiFePO4 over conventional batteries

• Longer cycle life: Up to 20 times longer in cycle life and 5 times longer in standby compared to lead-acid batteries.
• Lightweight: Up to 40% lighter than comparable lead-acid batteries.
• Higher power: Twice the power of a lead-acid battery at high discharge rates.
• Low self-discharge: Delivers twice the performance of a lead-acid battery, even at high discharge rates.
• Highly efficient: 92% energy utilization compared to 80% for lead-acid batteries.
• Enhanced safety features: Integrated BMS protects against overcharging, deep discharge, and short circuits; IP65-rated housing

Technical Specifications

• Nominal voltage: 12.8V
• Rated capacity: 304 Ah
• Rated energy: 3891 Wh
• Max. charging voltage: 14.6V
• Charging current: 60 A
• Discharge voltage: 10 V
• Operating current: 300 A
• Max. pulse current: 400 A
• Operating temperature (charging): 0°C - +55°C
• Operating temperature (discharge): -20°C to +65°C
• Connection: M8
• Protection class: IP65
• Service life: 4,000 cycles
• Dimensions: 522 x 265 x 218 mm
• Weight: 30.3 kg

Included

1x Offgridtec LifePo4 battery 12/300 12.8V 304Ah with integrated BMS, 3891Wh, with integrated heating mat