Product Details
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.
Company Profile
Our Mission: Original Innovation, Power the Future!
As a high-tech enterprise specializing in the R&D and
manufacturing of lithium-ion batteries, sodium-ion batteries, and
solid-state batteries. Founded in 2020 in Shenzhen, China’s
innovation hub, we are driven by our core philosophy of "Original
Innovation & Development" , delivering sustainable,
high-performance energy solutions for global applications,
including consumer electronics, smart devices, electric vehicles,
and energy storage systems.
With dozens of proprietary patents, the accreditation of Guangdong
Provincial Eco-Friendly Lithium Battery Engineering Research
Center, and strategic collaborations with leading institutions like
National University of Singapore, Wuhan University, and Shenzhen
University, OiD continuously pushes the boundaries of battery
technology. Our products power critical infrastructure, including
high-speed rail energy storage, residential solar systems, and
defense projects, accelerating the global transition to clean
energy.
Key Strengths
- Original Innovation
- Core technologies in Li/Na-ion and solid-state batteries, backed by
inventions, utility models, and design patents.
- Joint R&D centers with top universities (e.g., Wuhan
University), enabling rapid commercialization of cutting-edge
research.
- End-to-End Energy Solutions
- 500+ customizable battery models for consumer electronics, EVs, and grid-scale storage.
- Superior performance: high energy density, fast charging, extended
cycle life, and extreme-temperature resilience
- Sustainability Commitment
- Eco-conscious materials (e.g., cobalt-free cathodes, solid
electrolytes) and processes to minimize environmental impact.
- Global Reach
- R&D Hubs: Shenzhen, Wuhan (university partnerships)
- Manufacturing: Automated production lines in Shenzhen
- Markets: Asia, Europe, North America