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21Ah Ultra-Low Temperature LiFePO4 Battery – -40°C Discharge, 3000 Cycles, 10C/20C Pulse for Extreme Cold Energy Storage
Our ultra‑low temperature polymer battery delivers reliable power from -50°C to 50°C. As a true -50°C LiPo battery, it retains over 60% capacity at -50°C (0.2C discharge). Designed as an extreme cold LiPo battery for drone, it supports -20°C charging and 300+ cycles at -30°C. Perfect for polar expeditions, high‑altitude UAVs, and cold‑region military gear.
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Product Overview – Ultra-Low Temperature LiFePO4 Battery
PPCELL’s 21Ah ultra-low temperature LiFePO4 battery cell (Model 84L4E2) is a high-performance lithium iron phosphate cell engineered for extreme cold environments. Leveraging a proprietary nano-LiFePO4 + fast-charging graphite material system, this soft-pack cell delivers reliable power in sub-zero conditions where standard batteries fail.
With a nominal voltage of 3.2V, 21Ah capacity, and 150Wh/kg gravimetric energy density, the 84L4E2 is optimized for energy storage systems operating in extreme cold. The compact 8.10mm profile and 276Wh/L volumetric energy density enable space-efficient battery pack designs. Nano-LiFePO4 cathode technology provides superior low-temperature ionic conductivity compared to standard LFP materials, ensuring reliable performance even at -40°C.
The cell supports 10C continuous discharge (210A) and 20C pulse discharge (420A), delivering the instantaneous power required for cold-start applications and high-load equipment.
Key Features – Ultra-Low Temperature LFP Cell
-40°C Reliable Discharge: Maintains stable discharge performance at -40°C, enabling reliable operation in extreme cold environments for polar research, cold-chain logistics, and arctic energy storage.
3000 Cycles Long Life: 3000 cycles at 80% depth of discharge ensures extended service life for energy storage systems – significantly outlasting conventional batteries in cold-weather applications.
High Discharge Rate (10C Continuous / 20C Pulse): 10C continuous discharge (210A) and 20C pulse discharge (420A) for high-power cold-start applications and demanding load conditions.
Nano-LiFePO4 + Fast-Charging Graphite: Proprietary material system ensures superior low-temperature ionic conductivity and extended cycle life.
Ultra-Thin Profile (8.10mm): Optimized for space-constrained battery pack designs in portable and stationary energy storage applications.
Soft-Pack Form Factor: Lightweight pouch design enables flexible battery pack configurations and reduces overall pack weight.
Application Versatility: Designed for -40°C energy storage systems (ESS), polar research equipment, extreme environment power supplies, and cold-chain logistics.
Technical Specifications – 21Ah Ultra-Low Temperature LFP Cell
| Parameter | Specification |
|---|---|
| Model | 84L4E2 |
| Capacity | 21 Ah |
| Rated Voltage | 3.2 V |
| Material System | Nano-LiFePO4 + Fast-Charging Graphite |
| Application Area | -40°C Low-Temperature Energy Storage |
| Thickness | 8.10 + 0.30 mm |
| Width | 202 + 2 mm |
| Length | 140 + 2 mm |
| Tab Width | 70 ± 0.5 mm |
| Tab Center Distance | 110 + 1.5 mm |
| Cell Weight | ≈ 448 g |
| Internal Resistance | ≤ 10 mΩ |
| Volumetric Energy Density | 276 Wh/L |
| Gravimetric Energy Density | 150 Wh/kg |
| Cycle Life | 3000 cycles |
| Max Continuous Discharge | 10C (210A) |
| Max Pulse Discharge | 20C (420A) |
Why Choose PPCELL Ultra-Low Temperature LFP Cell?
Extreme Cold Reliability: -40°C discharge capability with stable voltage output – outperforms standard LFP batteries which typically fail below -20°C.
Proven LFP Safety: Iron phosphate chemistry eliminates thermal runaway risk, ensuring safe operation in extreme environments.
Extended Service Life: 3000 cycles at 80% DoD – significantly reduces replacement frequency and total cost of ownership for energy storage applications.
High-Power Performance: 10C continuous and 20C pulse discharge for cold-start and high-load applications.
Ultra-Thin Design (8.10mm): Enables flexible, space-efficient battery pack designs for portable and stationary ESS.
Nano-LiFePO4 Technology: Proprietary nano-cathode material ensures superior low-temperature ionic conductivity and extended cycle life.
Global Support: 15+ years of battery manufacturing expertise, with technical support worldwide.