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4S-12V-200A-BMS-BT
Specifications :
Specifications :
Model: 4S-12V-200A-BMS-BT
Battery: 4S LiFePO4 3.2V
Nominal Voltage: 12.8V
Charge Cut-off: 14.6V
Discharge Cut-off: 10.0V
Continuous Current: 200A
Peak Current: 300–350A(≤3 seconds)
Communication: Bluetooth BLE
Function: Overcharge/Overdischarge/Overcurrent/Short Circuit/Temp Protection, Passive/Active Balance
Application: RV, Energy Storage, 24V Inverter, Forklift
Product Detail
1. Core Basic Parameters
Model: 4S-12V-200A-BT (Smart BMS)
Applicable Battery: 4S LiFePO4 Battery (3.2V per cell)
Nominal Cell Voltage: 3.2V
Pack Nominal Voltage: 12.8V (12V system, 3.2V × 4)
Series: 4S (Fixed, non-adjustable)
Communication: Bluetooth 4.0/5.0 BLE (Built-in / External Module)
Application: RV energy storage, forklift, 12V inverter, high-power equipment
2. Electrical Specifications
Voltage Range
Full Charge Cut-off Voltage: 14.6V (3.65V × 4, matching 4S LiFePO4)
Discharge Cut-off Voltage: 10.0V ~ 11.2V (2.5V~2.8V per cell, matching 4S LiFePO4)
Static Power Consumption: ≤ 15mA (Normal) / ≤ 150µA (Sleep Mode)
Current Rating (200A Version)
Continuous Discharge Current: 200A
Peak Discharge Current: 300A ~ 350A (≤3 seconds)
Continuous Charge Current: 200A
Over-current Protection: ≥320A cutoff (Software adjustable)
Balancing Function
Balancing Type: Passive Balancing / Active Balancing (High-end version)
Balancing Current: 0.5A ~ 2A
Start Condition: Cell voltage ≥3.2V~3.5V, start when voltage difference＞0.03V (matching 4S LiFePO4)
3. Protection Functions
Over-charge protection: Cut off at 14.6V ±0.1V
Over-discharge protection: Cut off at 10.0V ±0.1V
Over-current protection: Discharge＞320A / Charge＞220A cutoff
Short circuit protection: Ultra-fast cutoff within 100µs
Temperature Protection:
Charging: 0°C ~ 55°C
Discharging: -20°C ~ 65°C
Automatic cell balancing
Battery reverse connection protection & ESD protection
4. Bluetooth APP Function
Compatible System: Android & iOS
Real-time Monitoring: Total voltage, charge/discharge current, SOC percentage; 4-channel cell voltage, NTC temperature, working status
Parameter Setting: Over-charge / Over-discharge / Over-current threshold, balance switch, temperature limit; Data reset, lock function, history & alarm record
Alarm push: Over-voltage, under-voltage, over-current, high/low temperature
5. Physical & Wiring
Dimension: Approx 164*82*20±1mm
Weight：Approx 255g
Terminal: B-, P-, C- (Separate / Common charge-discharge port)Accessories: 4S balance wire harness, NTC temperature probe
6. Matching Notes for 4S LiFePO4
Only for 4S LiFePO4 3.2V cell, NOT for ternary lithium battery
Suggest long-term working current ≤160A for safety margin
NTC temperature probe must be connected to avoid overheating risk
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