YFH-INR21700-50Q 21700 5000mAh High-Drain Li-ion Cell

Overview

The YFH-INR21700-50Q is a 21700 rechargeable lithium-ion cell manufactured by Jiangxi Province Yunfuheng New Energy Co., Ltd.

It offers 5000mAh nominal capacity, low internal resistance, and high discharge current capability. It is designed for high-power battery packs where stable output and cycle life matter.

This is a B2B cell for qualified pack assemblers and OEM buyers, not a retail consumer product.

Key Buyer Benefits

• High drain capability: 50A continuous discharge, 90A with 80°C temperature cut-off, and 140A 3s pulse.

• Stable capacity: 5000mAh nominal, 4900mAh minimum.

• Low internal resistance: ≤4mΩ.

• Good low-temperature performance: retains ≥60% capacity at -20°C, ≥70% at -10°C, and ≥80% at 0°C.

• Practical cycle life for power applications: 500 cycles ≥80% under 5A charge / 50A discharge.

• Consistent packing and one-year warranty for manufacturing defects.

Performance You Can Design Around

• Nominal voltage: 3.70V

• Charge limit: 4.2±0.05V

• Discharge cut-off: 2.50V

• Standard charge: 5A

• Max charge current: 15A

• Max continuous discharge: 50A without temperature cut-off; 90A with 80°C temperature cut-off

• Instantaneous discharge: 140A for 3s pulse

• Energy density: 272Wh/kg, 744Wh/L

• Weight: 68.0±2.0g

• Dimensions: Φ21.20±0.20mm × 70.50±0.2mm

• Bottom center prohibited welding area: Φ4mm

Cycle Life and Rate Performance

• Cycle life: 500 cycles ≥80% at 5A charge / 50A discharge.

• Cycle life: 400 cycles ≥70% at 10A charge / 50A discharge.

• Rate discharge: 5A/2.5A ≥98%, 25A/2.5A ≥95%, 50A/2.5A ≥93%.

Typical Applications

Suitable for high-power battery packs such as:

• Power tools

• Garden tools

• Cordless vacuum cleaners

• E-bikes and e-scooters

• Energy storage systems

• Drone / RC / jump starter packs

Safety and Quality

The specification covers safety tests including high-temperature short circuit, overcharge, over-discharge, thermal shock, impact, crush, vibration, drop, and high-temperature/high-humidity storage.

Appearance requirements: no deep scratches, cracks, rust, discoloration, or leakage that affect commercial value.

Warranty: one year from shipment for manufacturing process issues. Customer misuse or abuse is not covered.

Packing and Storage

• 100 cells per box.

• 2 boxes per outer carton.

• 200 cells per outer carton.

• Cells are packed in a half-charged state.

• Outer carton marked with product name, model, rated voltage, quantity, production date, and IR/capacity grade.

Storage conditions:

• 1 month: -20~60°C

• 3 months: -20~45°C

• 1 year: -20~25°C

Store in a ventilated, dry environment. If storage exceeds 3 months, a full charge-discharge cycle every 3 months is recommended.

Request a Quote

For pricing, samples, MOQ, and lead time, contact us.

Please share your application, required quantity, and destination port. We will reply with a quotation and the full product specification.

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