QPF20DA 20Ah Lithium-ion Battery Cell
High-rate performance. Long cycle life. Stable supply.
The QPF20DA is a 20Ah lithium-ion cell with 3.2V nominal voltage. It is designed for high-power packs, energy storage systems, and projects that need stable output and long service life.
We offer competitive pricing and large stock for overseas buyers. Contact us for current price, lead time, and shipping.
Why Buyers Choose QPF20DA
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20Ah rated capacity, 3.2V nominal voltage
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30C continuous discharge, 32C pulse discharge
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8C continuous charge, 10C pulse charge
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≥2000 standard cycles
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≥1200 cycles at 8C/8C
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Low internal resistance
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Clear BMS protection thresholds
Suitable for pack integration and volume projects
Key Specifications
| Item | Specification |
|---|---|
| Nominal Voltage | 3.2V |
| Rated Capacity | 20Ah |
| Operating Voltage | 2.0–3.65V (> -20°C); 1.8–3.65V (≤ -20°C) |
| Max Continuous Discharge | 30C |
| Max Pulse Discharge | 32C, 30s, 50% SoC |
| Max Continuous Charge | 8C |
| Max Pulse Charge | 10C, 10s, 50% SoC |
| Standard Charge | 1C to 3.65V, CV to 0.05C, rest 30 min |
| Standard Discharge | 1C to 2.0V, rest 30 min |
| AC Impedance | ≤0.5mΩ |
| DC Resistance | ≤1.2mΩ |
| Cycle Life | ≥2000 standard; ≥1200 at 8C/8C |
| Dimensions | 148.2 x 27.0 x 96.1 mm |
| Weight | 720 ± 20 g |
| Operating Temperature | Charge: -20 to +45°C; Discharge: -45 to +55°C |
| Storage Temperature | ≤1 month: -40 to +45°C; >1 month: -20 to +35°C |
| Shipment SoC | 15–50% |
BMS Protection Requirements
A BMS is required for safe operation.
Overcharge protection:
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3.65V: request charge termination
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3.70V: force stop charging
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3.75V: force stop and lock the cell
Over-discharge protection:
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2.50V: request discharge termination
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2.30V: force stop discharging
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2.0V: force stop and lock the cell
Overtemperature protection:
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Stop charge and discharge if the cell exceeds the safe temperature range.
Integration Notes
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Preload force for cycle life and pack design: 500–5000 N
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Recommended large-surface preload tolerance: ±200 N
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Use insulated aluminum fixture plates, thickness ≥20 mm
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Cell thickness increases with SoC. Allow swelling space in module design.
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Weldable pole area: 34 x 16 mm
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Max weld penetration: 3 mm
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Pole torque: ≤6 N·m
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Top cover max pressure: 1200 N
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Avoid over-discharge and low-temperature charging.
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Design for heat dissipation, waterproof/dustproof protection, and pressure relief.
Safety and Testing
The QPF20DA has been tested for:
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Overcharge
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Over-discharge
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Short circuit
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Thermal exposure
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Crush
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Temperature cycling
Under the specified test conditions, the cell is required to show no fire and no explosion. Abuse testing must only be performed by qualified personnel in a professional laboratory with proper protective equipment.
Supply and Pricing
We maintain large stock and offer competitive pricing for overseas buyers.
We support:
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Volume orders
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Repeat supply
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Technical document review
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Pack integration consultation
English specifications are for reference. The Chinese technical specification is the controlling version.
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