SOK SK12V206PH 12V 206Ah Marine Grade LiFePO4 Battery

SOK SK12V206PH 12V 206Ah Marine Grade LiFePO4 Battery

The SOK SK12V206PH is a 12V 206Ah Lithium Iron Phosphate (LiFePO4) battery designed for compatible marine, RV, solar, off-grid, backup, and mobile energy storage systems. It provides 12.8V nominal voltage, 2.6368kWh of stored energy, a Smart Battery Management System, built-in heating support, automatic cell balancing, and a sealed plastic enclosure with IP65 protection. The detachable cover also provides access to serviceable internal components, including the BMS and cells.

Key Features

• 206Ah High-Capacity LiFePO4 Battery: Provides 206Ah of nominal capacity and 2,636.8Wh of stored energy for compatible 12V deep-cycle systems.
• Marine-Grade Enclosure: Features a sealed plastic case with IP65 protection for compatible marine and mobile applications.
• Built-In Smart BMS: Integrated Battery Management System provides protection against overcharging, over-discharging, over-current, short circuits, and excessive temperature conditions.
• Built-In Heater: Includes an internal heater pad to support charging in low-temperature environments.
• Low-Temperature Charge Protection: The battery management system provides charging cutoff protection when operating outside the specified temperature range.
• High-Temperature Protection: Provides charging and discharging cutoff protection at elevated battery temperatures.
• Automatic Cell Balancing: Helps maintain balanced cell voltages during battery operation and charging.
• 150A Continuous Discharge: Supports up to 150A of maximum continuous discharge current for compatible 12V systems.
• 170A Peak Discharge: Provides short-duration peak discharge capability of up to 170A.
• 70A Maximum Charge Current: Supports up to 70A maximum charging current with compatible LiFePO4 charging equipment.
• 50A Recommended Charge Current: The supplied technical data recommends a 50A charging current for standard operation.
• Serviceable Design: The detachable cover provides access to replaceable BMS and cell components where compatible service parts are available.
• Series Expansion: Up to four compatible batteries can be connected in series for 24V, 36V, or 48V battery-bank configurations.
• Parallel Expansion: Supports parallel connection for increased overall battery capacity, with the supplied specifications allowing up to 10 batteries in parallel.
• Long Cycle Life: Designed for approximately 3,000–8,000 cycles depending on operating conditions, depth of discharge, and usage.
• Maintenance-Free Operation: LiFePO4 chemistry requires no routine watering or acid maintenance.
• M8 Terminals: Uses M8 terminal connections compatible with 5/16-inch lugs.
• 7-Year Warranty: Supplied product information specifies a 7-year warranty.
• Low Self-Discharge: The supplied data sheet lists self-discharge of less than 3% per month.

Specifications

• Brand: SOK Battery
• Model: SK12V206PH
• Battery Type: Deep-cycle LiFePO4 battery
• Chemistry: Lithium Iron Phosphate (LiFePO4)
• Nominal Voltage: 12.8V
• Nominal Capacity: 206Ah
• Stored Energy: 2,636.8Wh / 2.64kWh
• Cell Specification: 3.2V 206Ah cells
• Recommended Charge Current: 50A
• Maximum Charge Current: 70A
• Recommended Charge Voltage: 14.4V–14.6V
• BMS Charge Cut-Off Voltage: Below 14.6V
• Charge Reconnect Voltage: Above 14.4V
• Balancing Voltage: Below 14.4V
• Maximum Continuous Discharge Current: 150A
• Peak Discharge Current: 170A
• Recommended Low-Voltage Disconnect: 11.2V
• BMS Discharge Cut-Off Voltage: Above 10.4V
• Discharge Reconnect Voltage: Above 11.6V
• Maximum Batteries in Series: 4
• Maximum Batteries in Parallel: 10
• Terminal Type: M8 / 5/16-inch lugs
• Terminal Torque: 80–100 in-lb / 9–11 N·m
• Case Material: Sealed plastic
• Enclosure Protection: IP65
• Built-In Heater: Yes
• Dimensions: 13.31 × 9.06 × 10.26 inches
• Weight: Approximately 43.43 lb
• Discharge Temperature: -4°F to 140°F / -20°C to 60°C
• Charge Temperature: -4°F to 140°F / -20°C to 60°C according to the supplied data sheet
• Storage Temperature: -4°F to 140°F / -20°C to 60°C according to the supplied data sheet
• BMS High-Temperature Cut-Off: 149°F / 65°C
• Reconnect Temperature: 131°F / 55°C
• Short-Circuit Protection: 200–500A
• Self-Discharge: Less than 3% per month
• Certifications: UL1973, UL9540A, IEC62619 for battery cells
• Shipping Documentation: MSDS for shipping
• Warranty: 7 years

Suitable Applications

The SOK SK12V206PH is designed for compatible 12V deep-cycle energy storage applications, including marine systems, RVs, solar installations, off-grid power systems, backup power, and other mobile or stationary battery installations. Its 206Ah capacity and IP65 enclosure make it suitable for protected marine and outdoor-oriented battery compartments where the system requirements match.

Marine-Grade Construction

The SK12V206PH uses a sealed plastic case with an IP65 enclosure rating. The protected enclosure is designed for compatible marine and mobile installations where resistance to dust and water exposure is required. Installation should still prevent prolonged exposure to standing water and direct environmental abuse.

Smart BMS & Protection

The integrated Smart Battery Management System provides protection against overcharging, over-discharging, over-current, short circuits, and high-temperature conditions. The battery also includes low-temperature charge protection and automatic cell balancing to help maintain consistent cell operation.

Built-In Heater

The internal heater pad is designed to support charging in low-temperature conditions. The battery's charge temperature specifications and BMS protection should be followed during cold-weather use to keep charging within the manufacturer's stated operating limits.

Series & Parallel Configuration

Up to four compatible batteries can be connected in series to build higher-voltage battery banks for 24V, 36V, or 48V applications. Batteries can also be connected in parallel to increase total capacity, with the supplied specifications allowing up to 10 batteries in parallel. Batteries connected in series should be at the same state of charge before installation.

Serviceable Battery Design

The detachable cover allows access to internal components, including the BMS and battery cells. The BMS and cells are designed to be replaceable where compatible replacement components and service procedures are available.

Charging & Operation

The recommended charging current is 50A, while the maximum charging current is 70A. The recommended charging voltage is 14.4V–14.6V. Use a compatible 12V LiFePO4 charger and verify charger voltage, current, polarity, wiring, and battery temperature before charging.

Important Usage Note

Actual battery performance and service life depend on charging settings, discharge rate, depth of discharge, temperature, connected equipment, wiring, and installation conditions. Do not exceed the specified charge or discharge limits. For series-connected batteries, ensure the batteries are at the same state of charge before connection. The IP65 enclosure provides protection against dust and water exposure but is not intended for prolonged submersion.