Product Overview
|
| The ATOMFAIR® 26650 High-Rate LFP (LiFePO4) cylindrical cell is engineered for demanding power applications requiring exceptional discharge capability and inherent safety. With a nominal capacity of 2500mAh, it supports 20C continuous discharge (50A) and long-pulse current up to 75A for 60 seconds. Fast charging up to 5000mA is supported, with a maximum charge current of 12500mA under controlled conditions (SOC ≤40%, <5min). Featuring a built-in safety vent and nail penetration without fire or explosion, this cell delivers reliable performance for starter batteries, power tools, UPS systems, and other high-drain devices. With a cycle life of 2000 cycles at 80% DOD, it combines high power density with LFP’s intrinsic thermal stability. |
Technical Specifications
|
| PARAMETER |
VALUE |
| General Parameters |
| Nominal Capacity (1C) |
2500 mAh |
| Minimum Capacity (1C) |
2500 mAh |
| Nominal Voltage |
3.2 V |
| Energy Density |
93 Wh/kg |
| Internal Resistance |
≤7 mΩ |
| Weight |
≈86 g |
| Cycle Life (80% DOD, 25°C) |
2000 cycles |
| Charge Parameters |
| Max. Charge Voltage |
3.65 ± 0.03 V |
| Standard Charge Current |
2500 mA |
| Fast Charge Current |
5000 mA |
| Max. Charge Current |
12500 mA (SOC ≤40%, <5 min) |
| Discharge Parameters |
| Min. Discharge Voltage |
2.0 V |
| Standard Discharge Current |
2.5 A |
| Max. Continuous Discharge Current |
50 A @ 25°C |
| Max. Pulse Discharge Current |
75 A @ 60s |
| Discharge Performance |
>70% @ -10°C to 2.0V; >80% @ 0°C to 2.0V; >98% @ 60°C to 2.0V |
| Temperature Ranges |
| Charge Temperature |
0°C to 45°C |
| Discharge Temperature |
-20°C to 60°C |
| Manufacturing Compliance: Fully traceable production under ISO 9001:2025 and IATF 16949 standards. Custom form factors or electrode formulations available upon request. |
|
Key Features & Advantages
|
- Ultra-High Discharge Capability: Supports 20C continuous discharge (50A) and 75A long-pulse current for 60 seconds, ideal for starter batteries, power tools, and UPS.
- Fast Charging: 5000mA fast charge current and up to 12500mA max charge current (SOC ≤40%, <5 min) for rapid recharge.
- Extended Cycle Life: 2000 cycles at 80% DOD under 25°C, with excellent high-rate durability.
- Intrinsic Safety: Built-in explosion-proof safety vent, passes nail penetration without fire or explosion, zero thermal runaway risk.
|
|
APPLICATION SCOPE: Automotive starter batteries, high-power electric tools, uninterruptible power supplies (UPS), drone power packs, portable jump starters, and industrial high-rate backup systems.
PACKAGING: Anti-static plastic trays (50 cells per tray, 200 cells per master carton). Insulated terminal covers included for safe transport.
IMPORTANT NOTICE: For high-rate discharge applications (>20C), ensure proper thermal management. Maximum charge current of 12500mA is only allowed when cell SOC ≤40% and charging duration <5 minutes. Always use a BMS with overcurrent and short-circuit protection.
|
Frequently Asked Technical Questions
|
What is the maximum continuous and pulse discharge current?
The cell supports 50A continuous (20C) at 25°C and 75A pulse for 60 seconds (30C). Single-cell peak current is 125A for very short durations (≤5s) as specified in the product highlights.
How many cycles can I expect at 20C discharge?
Accelerated life testing shows >1500 cycles to 70% SOH under 20C discharge with proper cooling. Under standard conditions (1C), cycle life exceeds 2000 cycles at 80% DOD.
What is the condition for 12500mA max charge current?
The 12500mA (5C) charge current is only permitted when cell SOC is ≤40% and charging duration is less than 5 minutes. For regular charging, use standard 2500mA or fast charge 5000mA.
Is this cell safe against nail penetration?
Yes, the cell passes nail penetration tests without fire or explosion, thanks to LFP chemistry and integrated safety vent. It is inherently more abuse-tolerant than NMC.
What safety certifications are available?
The cell complies with UL 1642, IEC 62133-2:2021, UN38.3, and CE. Batch-level test reports are available upon request.
|
|
