50.4V 20Ah Lithium Ion Battery Pack with BMS 50A Discharge
Brand Name:OiD
Certification:GB/T 36276-2018
Model Number:OiD20Ah-50.4
Minimum Order Quantity:100pcs
Delivery Time:3 ~ 7 days for storage
Payment Terms:TT,L/C,Western Union
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Shenzhen China
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2# Building, Shimao Park, Zhenhuan Rd, Pingshan, Shenzhen, China.
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Product Details
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Product Details
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.
50.4V 20Ah Lithium Ion Battery Pack with BMS 50A Discharge
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