25.2V 20Ah Lithium Ion Battery Pack with BMS 500 Cycles
OiD20Ah-25.2 25.2V 20Ah Lithium Ion Battery Pack 10A 500Cycle
Product Name
25.2V 20Ah Lithium-Ion Battery Pack (Li-ion)
Advantages
- High Energy Density: Compact design with 20Ah capacity for extended runtime.
- Long Cycle Life: 500+ cycles at 80% depth of discharge (DoD) under standard conditions.
- Robust Safety: Integrated BMS with multi-layer protection (overcharge, over-discharge, short circuit).
- Wide Temperature Range: Reliable performance from -20°C to 60°C.
- Eco-Friendly: Lead-free and recyclable materials.
Specifications
|
Parameter |
Value |
Unit |
Comments |
|
Model |
OiD20Ah-25.2 |
- |
7S6P Li-ion configuration with high-efficiency cells. |
|
Nominal Voltage |
25.2V |
DC |
7S series connection (3.6V/cell). |
|
Rated Capacity |
20Ah |
@0.5C |
Tested at 25±2℃, 50% SOC. |
|
Max Continuous Discharge |
10A |
@CC |
Operates within -20°C to 60°C. |
|
Max Charge Current |
5A (0°C–45°C) |
@CC/CV |
Charges to 29.4V (constant voltage phase). |
|
Terminal Configuration |
UL3239 12AWG (Red+/Black-) |
Connector Type |
High-current terminals with anti-corrosion coating. |
|
Internal Resistance |
≤150mΩ |
@1kHz |
Ensures minimal voltage drop during high-load operation. |
|
Weight |
~3.5kg |
Lightweight design for portable applications. |
|
|
Dimensions |
220mm(L) × 150mm(W) × 80mm(H) |
Optimized for space efficiency. |
Cycle Life
|
Test Conditions |
Cycle Count |
Capacity Retention |
Standard |
|
25±2℃, 0.5C charge + 10A discharge |
500 cycles |
≥80% initial capacity |
GB/T 31484-2015 (equivalent) |
Typical Discharge Profile:
- Voltage Stability: Maintains 25.2V plateau at 0.5C discharge (25±2℃).
- High-Rate Discharge: Voltage drops to 18.9V within 2 hours at 10A (25±2℃).
- Low-Temperature Performance: Capacity retains ≥70% at -10℃.
Operating Temperature Range
|
Category |
Operating Range |
Unit |
Standard Compliance |
|
Charge Temperature |
0°C – 45°C |
℃ |
GB/T 31486-2015 |
|
Discharge Temperature |
-20°C – 60°C |
℃ |
GB/T 31486-2015 |
|
Storage Temperature |
-10°C – 40°C |
℃ |
≤12 months (50% SOC) |
Certifications
- China National Standards: GB/T 31486-2015 (Li-ion battery testing).
- Safety Compliance: Passes UN38.3, vibration, and thermal shock tests.
Key Features
- Advanced BMS: Real-time monitoring of voltage, current, and temperature.
- Modular Design: Scalable for solar storage, EVs, and industrial systems.
- Durability: IP54-rated enclosure for dust and water resistance.
BMS Specifications
|
Function |
Threshold |
Delay Time |
Action |
|
Overcharge Protection |
4.2V ±0.05V/cell |
<500ms |
Cut-off + auto-recovery after voltage drop. |
|
Overdischarge Protection |
2.7V ±0.1V/cell |
<1s |
Cut-off + auto-recovery after charging. |
|
Overcurrent Protection |
15A (charge) / 10A (discharge) |
<200ms |
Load disconnection. |
|
Temperature Protection |
Charge: 55℃ / Discharge: 65℃ |
- |
Adjusts charge/discharge rate or cuts off. |
Applications
- Electric Vehicles (EVs)
- Solar Energy Storage Systems
- Portable Power Stations
- Industrial Backup Power
- Medical Equipment
Usage Warnings & Precautions
- ❗ Do NOT disassemble the battery pack.
- ❗ Charge only within 0°C–45°C using certified chargers.
- ❗ Avoid exposing terminals to moisture or conductive materials.
- ❗ Store at 50% SOC if unused for >1 month.
Storage Guidelines
- Short-Term: ≤3 months at 20–25°C, 50% SOC.
- Long-Term: ≤12 months at -10–40°C, 50% SOC (recharge every 6 months).
- Avoid: Prolonged storage at full charge or deep discharge states.
Warranty & Disclaimer
- Warranty: 24 months from shipment or 500 cycles (whichever occurs first).
- Coverage: Defects in materials or workmanship.
- Exclusions: Damage from misuse, unauthorized modifications, or extreme environments.
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.