YFH-INR21700-50Q 21700 5000mAh Li-ion Cell – 3.7V High Energy Density
The Yunfuheng YFH-INR21700-50Q 21700 5000mAh 3.7V lithium-ion battery cell is a high-energy, high-rate cell from Jiangxi Yunfuheng New Energy. It combines a 3.7V nominal voltage, 272Wh/kg energy density, and up to 140A pulse discharge, making it suitable for power tools, LEVs, and custom battery packs.
Large stock available. Competitive wholesale pricing for bulk orders.
What Makes This Cell Different
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3.7V nominal voltage – higher platform than many standard 21700 cells.
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272Wh/kg energy density, 744Wh/L – more energy per weight and volume.
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50A continuous discharge without temperature cut-off.
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90A discharge with 80°C temperature cut-off.
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140A pulse discharge for 3 seconds.
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≤4mΩ AC impedance – low resistance for high-current applications.
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500 cycle life: ≥80% capacity after 500 cycles at 5A charge / 50A discharge.
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Bottom prohibited welding area: Φ4mm center – check your pack design.
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Compact size: 21.20 ± 0.20mm diameter, 70.50 ± 0.2mm height.
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Lightweight: 68.0 ± 2.0g.
Specifications at a Glance
| Item | Specification |
|---|---|
| Model | YFH-INR21700-50Q |
| Brand | Yunfuheng |
| Nominal capacity | 5000mAh |
| Minimum capacity | 4900mAh |
| Nominal voltage | 3.7V |
| Charge limit voltage | 4.2 ± 0.05V |
| Discharge cut-off voltage | 2.50V |
| Standard charge | 5A CC-CV, 100mA cut-off |
| Max charge current | 15A |
| Max continuous discharge | 50A (no temp cut-off); 90A with 80°C cut-off |
| Pulse discharge | 140A, 3s |
| AC impedance | ≤4mΩ |
| Weight | 68.0 ± 2.0g |
| Dimensions | Φ21.20 ± 0.20mm x 70.50 ± 0.2mm |
| Operating temperature | Charge: 0–50°C; Discharge: -20–80°C |
| Cycle life | ≥80% after 500 cycles (5A charge / 50A discharge) |
| Energy density | 272Wh/kg, 744Wh/L |
| Delivery voltage | 3.50–3.60V |
| Warranty | 1 year from shipment |
Where It Works Best
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Power tools
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E-bikes and LEVs
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Energy storage systems
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Backup power
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High-drain devices
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Custom 21700 battery packs
Stock and Pricing
We supply the Yunfuheng YFH-INR21700-50Q to overseas buyers, distributors, and OEM manufacturers. If you need a stable 21700 battery supplier for repeat orders or bulk production, we offer large stock and competitive pricing.
Buyer Questions
What is the nominal voltage?
3.7V, higher than many 21700 cells.
What is the maximum discharge current?
50A continuous without temperature cut-off, 90A with 80°C cut-off, and 140A pulse for 3 seconds.
How long does it last?
Tested to 500 cycles at 5A charge / 50A discharge, with ≥80% capacity retention.
Is there any welding restriction?
Yes. The bottom center has a Φ4mm prohibited welding area. Check your pack design before ordering.
Do you offer wholesale pricing?
Yes. Pricing depends on quantity, destination, and order terms. Contact us for current bulk pricing.
Request a Quote
Send your target quantity, application, and delivery country. We will reply with current price, stock availability, MOQ, and lead time.
🌐 Website: www.becellbattery.com
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