PowMr POW-50AH-12.8V LiFePO4 Battery
High-Performance, Reliable Energy Storage Solution
Product Overview
The POW lithium battery series delivers exceptional performance, capacity, and reliability. Utilizing the latest high-power battery technology, the POW lithium batteries are designed for applications in environmentally sensitive areas that require enhanced commercial cycle life capabilities. These batteries are widely used across industrial, residential, commercial, and private sectors, meeting a diverse range of needs. With a maintenance-free structure and advanced design features, the POW lithium series is the ideal choice for various markets, including solar and renewable energy storage, electric vehicles, golf carts, industrial equipment, floor machines, forklifts, aerial work platforms, and robotics; marine, RV, and idle-free solutions; mobile and medical equipment; as well as telecommunications, broadband, and cable TV UPS systems. The POW lithium battery series, with its superior technology and reliability, ensures optimal performance in all applications.
Battery Specifications
| Battery Type-Chemistry | LiFePO4 |
| Nominal Voltage | 12.8V |
| Nominal Capacity | 50Ah |
| Energy Density | 640Wh |
| Dimensions (LxWxH) | 228x138x226mm |
| Weight | 6kg |
| Terminal Type | M6 |
| Terminal Torque | 8.5Nm |
| Case Material | ABS |
| BMS Built-in | Yes |
| Self-Discharging Per Month | <3% |
| Max in Parallel | 4 |
| Max in Series | 4 |
| Charging Voltage Range | 10.8~14.4V |
| Recommend Charge Voltage | 14V |
| Max Charge Voltage | 14.4V |
| Max Continuous Current | 50A |
| Recommend Discharge Voltage | 11.2V |
| Max Discharge Voltage | 10.8V |
| Max Continuous Discharge Current | 50A |
| Cycle Life (0.2C, 25°C@80% DOD) | 4000 Cycle |
| Discharge Temperature | -10~60℃ |
| Charge Temperature | 0~60°C |
| Storage Temperature | -30~50°C |
BMS Characteristics
| Protection Type | Current / Voltage | Delay Time |
|---|---|---|
| Primary Charging Protection | Current: 60A | 1-1.5s |
| Second Charging Protection | Current: 90A | 0.5-1s |
| Primary Discharging Protection | Current: 100A | 400ms |
| Second Discharging Protection | Current: 120A | 40ms |
| Over Charge Voltage Protection | Voltage: 14.4V | 0.5-1.5s |
| Over Discharge Voltage Protection | Voltage: 8.4V | 0.5-1.5s |
| Temperature Protection (PCB Temperature) | ≥98°C | Recover Temperature: ≤80°C |
Performance Data
Constant Current Discharge Data (Amperes @ 25°C, Cut-off Voltage 10.8V)
| Discharging Time | 1h | 2h | 3h | 4h | 5h | 10h | 20h |
|---|---|---|---|---|---|---|---|
| Discharging Current | 50A | 25A | 16.6A | 12.5A | 10A | 5A | 2.5A |
Constant Current Discharge Data (Watts @ 25°C, Cut-off Voltage 10.8V)
| Discharging Time | 1h | 2h | 3h | 4h | 5h | 10h | 20h |
|---|---|---|---|---|---|---|---|
| Discharging Power | 640W | 320W | 213.3W | 160W | 128W | 64W | 32W |
Performance Curve Descriptions
Discharge Characteristics (25°C)
This graph illustrates the voltage stability during discharge at 25°C for various rates (1C, 0.5C, 0.3C, 0.2C). The voltage remains relatively high and stable, dropping from approximately 12.8V to between 11.7V and 11.2V at the cut-off point. Higher discharge rates lead to a more pronounced voltage sag.
Different Temperature Discharge Curve (0.5C)
This curve shows the impact of temperature on discharge performance at a 0.5C rate. At 50°C, the battery maintains the highest voltage and capacity. As the temperature decreases to 0°C and then to -10°C, the discharge voltage and overall capacity are significantly reduced, indicating performance degradation in colder conditions.
Different DOD Discharge Cycle Life Curve (0.2C, 25°C)
This graph relates the Depth of Discharge (DOD) to the cycle life at 0.2C and 25°C. A 100% DOD yields approximately 1000 cycles, while an 80% DOD extends the cycle life to around 4000 cycles. Shallower discharge depths (e.g., 50% or 30% DOD) result in significantly longer cycle life, exceeding 4000 cycles.
State of Charge Curve (0.5C, 25°C)
This curve plots the battery's voltage and state of charge (SoC) during charging at a 0.5C rate and 25°C. The voltage increases progressively with SoC, from around 13.3V at 50% SoC to 14.1V-14.6V at 100% SoC. A full charge from 0% to 100% typically takes between 60 to 90 minutes.
Dimensions
The physical dimensions of the POW-50AH-12.8V battery are 228mm (Length) x 138mm (Width) x 226mm (Height).
Precautions
- Always refer to the latest version of the technical manual published on the website to ensure safe and efficient operation.
- For parallel connections, fully discharge the batteries before connecting them in parallel, and then recharge them. For series connections, ensure the remaining capacity of each battery is the same.
- Parallel connections are intended only to extend backup time, not to increase output power.
- The company assumes no responsibility for any accidents caused by not following this user manual.
