50.4V 20Ah Lithium Ion Battery Pack with BMS 50A Discharge
OiD20Ah-50.4 50.4V 20Ah Lithium Ion Battery Pack 50A 300Cycle
Product Name
Lithium-Ion Battery Pack (Li-ion)
Advantages
- High Safety: Stable chemistry with no risk of explosion.
- Long Cycle Life: Up to 300+ cycles at 80%DOD.
- Wide Temperature Adaptability: Operates from -20°C to 60°C.
- Eco-Friendly: Lead-free and recyclable design.
- Customizable: Modular configurations for solar, home energy storage, and industrial systems.
Specifications
|
Parameter |
Value |
Unit |
Comments |
|
Nominal Voltage |
50.4V |
DC |
Non-parallel/series connection allowed. |
|
Rated Capacity |
20Ah |
@0.5C |
Based on 14S4P cell configuration (IFR32700-5A 3C). |
|
Max Charge Current |
10A (25°C±2) |
@Constant Current (CC) |
Up to 58.8V (constant voltage phase). |
|
Max Discharge Current |
50A (0°C–45°C) |
@Constant Current (CC) |
Min discharge voltage: 2.7V/cell. |
|
Terminal Configuration |
Red UL3135-12AWG (+), Black UL3135-12AWG (-) |
Connector Type |
For high-current applications. |
|
AC Impedance |
≤160mΩ |
@1kHz |
Measured with digital impedance analyzer. |
|
Weight |
~4.5kg |
Including enclosure and connectors. |
|
|
Dimensions |
195mm(L) × 185mm(W) × 80mm(H) |
Excluding wiring harness. |
Cycle Life
|
Test Conditions |
Cycle Count |
Capacity Retention |
Standard |
|
0.5C Charge + 0.5C Discharge |
300 cycles |
≥97% @100%DOD |
IEC 61434-2015 (equivalent) |
Typical Discharge Profile:
- Voltage Platform: Stable between 50.4V and 2.7V/cell at 0.5C discharge.
- High-Rate Discharge: Voltage drops faster at 50A (e.g., 20% drop within 10 minutes).
- Low-Temperature Performance: Minimal voltage sag at -20°C (-5% drop vs. 25°C).
Operating Temperature Range
|
Category |
Range |
Unit |
Standard Compliance |
|
Charge Temperature |
0°C – 45°C |
℃ |
GB/T 36276-2018 |
|
Discharge Temperature |
-20°C – 60°C |
℃ |
GB/T 36276-2018 |
|
Storage Temperature |
-20°C – 45°C |
℃ |
≤1 month (50% SOC); ≤12 months (25°C SOC) |
Certifications
- China National Standard: GB/T 36276-2018 (Power Storage Lithium-Ion Batteries).
- Safety Compliance: Passes vibration, altitude, and high-temperature tests (per specs).
Key Features
- Material: Lithium iron phosphate (LiFePO₄) ensures thermal stability.
- BMS Protection: 50A fusing + multi-level over/under-voltage/current protection.
- Modular Design: Flexible for solar, home energy storage, and industrial systems.
BMS Specifications
|
Function |
Setting |
Threshold |
Action |
|
Cell Overvoltage |
Enable |
4.25V ±0.03 |
Cut-off + recovery after <3 seconds. |
|
Cell Undervoltage |
Enable |
2.7V ±0.1 |
Cut-off + recovery after <1.5 seconds. |
|
Battery Overvoltage |
Enable |
58.8V |
Cut-off + recovery after <1.05 seconds. |
|
Battery Undervoltage |
Enable |
2.7V |
Cut-off + recovery after <5 seconds. |
|
Temperature Protection |
Charge: 52°C / Discharge: 65°C |
±5°C Sampling Error |
Cut-off + recovery when temp returns to threshold. |
Applications
- Solar Power Systems
- Residential Energy Storage
- Electric Vehicle Auxiliary Power Units
- Industrial Backup Systems
- Marine/Offshore Applications
Usage Warnings & Precautions
- ❗ Avoid overcharging (>58.8V) or deep discharging (<2.7V/cell).
- ❗ Operate only within specified temperature ranges.
- ❗ Use certified chargers and avoid short circuits.
- ❗ Store in dry, ventilated areas (≤45°C, 60% RH).
Storage Guidelines
- Short-Term: ≤1 month at 50% SOC, 25°C.
- Long-Term: ≤12 months at 25°C (recharge every 6 months).
- Avoid: Direct sunlight, extreme humidity, or physical impacts.
Warranty & Disclaimer
- Warranty Period: 24 months from shipment or 300 cycles, whichever comes first.
- Coverage: Defects caused by manufacturing errors.
- Exclusions: Damage from misuse, improper storage, or operation outside specs.
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.