SPECIFICATIONS

Battery Terminal Configuration: + Pole left

Brand Name: Foursun

Start-stop battery: No

Voltage: 12 V

• Friendly reminder: Due to differences in battery cell brands, production methods and raw materials, as well as batch variations, the weight may fluctuate slightly. This will not affect the overall battery capacity or product quality, so please feel free to use it.

    Specifications:

• Brand: Foursun

  Model: 12V100Ah/200Ah/300Ah

  Size (length*width*height): 332*172*220mm / 550*230*220mm / 550*230*220mm

  Energy:1280wh / 2560wh / 3840wh

  Internal resistance: ≤50mΩ / ≤40mΩ / ≤30mΩ

  Self discharge: <3% Monthly

  Case material: ABS plastics

  Classification of waterproof: lP67

  Standard charging current: 20A / 40A / 60A

  Maximum charging curent: 100A / 200A / 200A

  Charging voltage: 14.4+0.2V

  Maximumdis charge curent: 120A / 200A / 235A

  Overcurrent protection: 130A / 210A / 250A

    Features:

• Replace Traditional Lead-Acid Batteries

  Our 12V 100Ah deep cycle LiFePO4 battery delivers an impressive 4500+ cycles — far exceeding traditional lead-acid batteries. It weighs only 1/3 of a lead-acid battery of the same capacity, making installation and transportation effortless. Moreover, LiFePO4 technology supports 100% depth of discharge (DoD), while lead-acid batteries can only discharge 40-50% to avoid damage. This means you get nearly double the usable capacity from the same rated Ah. More power, less weight, longer life — a smart upgrade for your energy system.

• Built-in BMS Protection

  The advanced Battery Management System (BMS) provides comprehensive, real-time protection: cell balancing ensures consistent voltage across all cells; under-voltage and over-voltage shutdown prevents cell damage; short circuit protection responds instantly to dangerous current spikes; and temperature protection safeguards against overheating. The BMS continuously monitors battery status and automatically disconnects the circuit when anomalies are detected. This intelligent system not only extends battery life but also ensures safe operation under all conditions.

• Parallel & Serial Connection

  To achieve higher capacity and voltage, this 12V 100Ah LiFePO4 battery supports flexible configuration — up to 4 in series or 4 in parallel (maximum 4S4P). This allows you to expand capacity up to 800Ah (with 4 in parallel) or increase voltage to 24V, 36V, or 48V (with 4 in series). The 4S4P configuration delivers 51.2V 400Ah, providing a total energy of up to 20.48kWh. Before connection, please ensure that all batteries have the same charge level and voltage to optimize performance and extend service life.

• Pre-connection Reminder

  1.If you purchase 3-4 batteries, please fully charge each one separately, then connect them in parallel for 1-2 hours. This allows the batteries to reach a balanced voltage state before configuring them in series.

  2.To meet the requirements for series connection, use thicker connecting wires to handle higher voltage and reduce resistance. Wires that are too thin can cause voltage drops, overheating, and reduced system efficiency.

  3.To ensure optimal compatibility, please confirm that all batteries are of the same brand, same model, and similar age.

• Wide Application

  This LiFePO4 battery is perfect for various off-grid uses: RVs, boats, golf carts, solar/wind energy storage systems, UPS backup, outdoor camping, home power supply, and more. Reliable power wherever you need it.