This document is a product manual for a 12V 200Ah Lithium Iron Phosphate (LiFePO4) battery from TezePower, featuring a 200A Battery Management System (BMS).
Function Description
The TezePower LiFePO4 battery is designed as a power source for various applications, offering a high-capacity, long-cycle-life alternative to traditional lead-acid batteries. It is equipped with a Battery Management System (BMS) for protection and monitoring, and includes optional features such as a Bluetooth module for APP connectivity, a self-heating module for cold environments, and an active equilibrium module for cell balancing. The battery is intended for use in systems requiring reliable and efficient energy storage, supporting both series and parallel connections for increased voltage or capacity.
Important Technical Specifications
Battery Type: Prismatic LiFePO4 Battery
Nominal Capacity: 200Ah
Usable Capacity: 200Ah
Nominal Voltage: 12.8V
Energy: 2560Wh
Charge Method: CC/CV (Constant Current/Constant Voltage)
Charge Voltage: 14.4V ± 0.2V
Recommend Charge Current: 40A (0.2C)
Battery Management System (BMS) Board: 200A
Max. Continuous Charge / Discharge Current: 200A
Max. Discharge Current 5 Seconds: 400A
Max. Continuous Load Power: 2560W
Cycle Life: ≥4000 times
Internal Impedance: ≤40mΩ
Battery Pack Case: Acrylonitrile Butadiene Styrene (ABS) Plastic
Protection Class: IP65
Weight: 45.64lb / 20.7kg
Dimension: L20.55 * W9.45 * H8.58 inch (L522 * W240 * H218 mm)
Temperature Range:
- Normal-Charge: 0°C to 50°C / 32°F to 122°F
- Normal-Discharge: -20°C to 60°C / -4°F to 140°F
- Self-Heating Charge: -20°C to 50°C / -4°F to 122°F
- Self-Heating Discharge: -20°C to 60°C / -4°F to 140°F
- Storage: -10°C to 50°C / 14°F to 122°F
Terminal & Post Bolts:
- Terminal Size: M8 (1.25mm Metric Thread)
- Post Bolts: M8 (1.25mm Metric Thread * 16mm Bolt Length)
- (The bolts can be replaced with M8 bolts of other lengths based on actual needs.)
Operating Voltage: 12.8V
Charging Voltage: 14.4 ± 0.2V
Max Continuous Load Power: 2560W
Max Continuous Charge/Discharge Current: 200A
Usage Features
Activation and Warranty:
- Users are instructed to contact
service@tezepower.com to activate the five-year warranty.
- Insulating plugs must be pulled out before use.
Installation and Connection:
- Post Bolts: Tightly screw in post bolts to prevent heat buildup and damage.
- Insulating Covers: Put on insulating covers to avoid short circuits from conductive objects touching terminals.
- Voltage Testing: Test battery voltage with a multimeter. If below 12V, contact customer service.
- Charging: Fully charge the battery separately before connecting.
- Series/Parallel Connection:
- Batteries must be identical (same capacity, BMS, brand) and purchased within one month.
- Supports up to 16 identical batteries: 4 in series for a 48V (51.2V) system, or 4 in parallel for a 1200Ah system.
- Accessory Recommendation: 2*6AWG Copper Cable for battery-to-battery connection, and two copper bars for total input & output connection.
- Safety: Wear insulating gloves during connection.
- Voltage Balancing: Fully charge batteries separately (voltage at rest ≥13.4V) and leave them connected in parallel for 12-24 hours before connecting in series or parallel to balance voltages.
- Wiring Diagrams: Detailed diagrams are provided for 2S2P (24V 400Ah), 2P4S (48V 400Ah), and 4P2S (24V 800Ah) configurations, specifying energy, continuous charge/discharge current, and continuous load power for each.
Charging Methods:
- LiFePO4 Charging Mode: The manual recommends selecting "LiFePO4" mode on chargers due to its distinct charging curve compared to lead-acid batteries.
- Solar Panel & Controller:
- Recommended Solar Power: ≥900W for a full charge in one day (4.5 effective sunshine hours).
- Controller Charging Current: 40A (0.2C) for full charge in ~5 hours, 100A (0.5C) for ~2 hours to 97% capacity.
- Tips: Disconnect the charger from the battery after fully charging.
- Battery Charger: Use a 14.6V lithium iron phosphate (LiFePO4) battery charger.
- Alternator/Generator: If using an alternator/generator, ensure it supports DC output and refer to "Battery Charger" for suitable charger recommendations.
Battery Capacity Estimation (SOC):
- The voltage of LiFePO4 batteries during charging/discharging is not the real voltage. Disconnect all connections and let the battery rest for over 30 minutes to test the real voltage.
- A table provides approximate State of Charge (SOC) percentages corresponding to specific battery voltages (e.g., 100% at 13.5V, 0% at 9.5V).
Inverter Settings:
- Recommended Method: Select "12V (14.6V) LI (LiFePO4) Mode" on the inverter.
- User Mode (if recommended mode unavailable): Set parameters manually:
- Charge Voltage: 14.6V
- Over Voltage Disconnect: 15V
- Over Voltage Reconnect: 14.2V
- Under Voltage Warning: 11.6V
- Under Voltage Recover: 12V
- Low Voltage Disconnect: 10.8V
- Low Voltage Reconnect: 12.4V
- Contact
service@tezepower.com for assistance with special inverter parameters.
Bluetooth Module (Optional):
- Android App: Download via
https://dalyeltec.cn/daly/SMART_BMS.apk or https://www.appgallery.huawei.com/#/app/C102450269 or by scanning the QR code.
- Apple App: Download via
http://apps.apple.com/cn/app/smart-bms/id1519968339 or search "Smart BMS" in the App Store or by scanning the QR code.
- Instructions: Turn on Bluetooth, ensure the battery is activated, click the "Smart BMS" APP icon, view Bluetooth series number, click to enter the interface, and set parameters (password 123456). The app displays real-time parameters like voltage, current, capacity, SOC, fault alarms, and temperatures.
Self-heating Module (Optional):
- Automatically activates when the ambient temperature is below the set temperature and the battery is charging or discharging.
- Disconnects when the ambient temperature is higher than the set temperature or when the battery is disconnected.
Active Equilibrium Module (Optional):
- Balance Current: 0.5~1A
- Balance Mode: Active equilibrium.
- Balance on Condition: Minimum voltage of single unit ≥ 3.2V (factory default) and equalizing opening differential pressure: ≥20mV (factory default).
- Balance Closing Condition: Minimum voltage of single unit < 3.2V (factory default) and equalizing differential pressure: < 10mV (factory default).
Maintenance Features
Troubleshooting (Battery Stops Working):
- If the battery "Can't work," "Can't be charged," or has "Voltage < 9V," the BMS might have shut it off for protection.
- General Steps:
- Cut off all connections from the battery.
- Leave the battery aside for 30 minutes. It should automatically recover to normal voltage (>10V).
- If recovery fails, try one of two methods:
- Use a charger with a 0V charging function to fully charge the battery.
- Connect an 18V-36V solar panel for 3-10 seconds in sunny daytime to activate and fully charge.
Long-term Storage:
- Temperature: Ideal storage temperature is 10°C to 35°C (50°F to 95°F). Store in a fireproof container, away from children.
- Capacity: Store at a 50% charge level and recharge every three months if not used for a long time.
Rebalancing (for multiple batteries in a system):
- It is recommended to rebalance the battery voltage every six months by following Step 2 of the "HOW TO CONNECT BATTERIES" section (Page 13) to address potential voltage differences.
Safety Warnings:
- ATTENTION: Risk of Fire, Explosion or Burns. Do NOT Short circuit. Do NOT Reverse connections. Do NOT Disassemble. Do NOT Throw into fire or incinerate. Do NOT Heat above 70 °C/158°F.
- WARNING:
- Battery Disposal: Dispose of waste batteries with insulating paper to prevent fire and explosion.
- Prohibition of Disassembly: Never disassemble the cells. Disassembling may generate an internal short circuit, causing gassing, firing, or other problems.
- Prohibition of Dumping of Cells into Water: Electrolyte is harmful. Do not soak the battery in water, seawater, non-alcoholic drinks, fruit juice, coffee or other drinks.
- Prohibition of Disassembly (Cells): If any abnormal features are found (leakage, swelling, deformation), do not use the battery. Cells with a smell of electrolyte or leakage should be placed away from fire to avoid fire or explosion.
- Prohibition of Using in Below Places: Do not use the battery in places with strong static electricity or a strong magnetic field. Ensure battery safety protection device and hidden danger.
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