5000mAh rechargeable 21700 lithium-ion cell with 3.65V nominal voltage, 18.25Wh energy, 1000-cycle life, ≤20mΩ resistance, and 264Wh/kg energy density.
PRODUCT DETAILS
Complete product details — specifications, images, FAQ, and downloadable resources for this VoltCrave power solution
The 5000mAh capacity combines substantial stored energy with the compact 21700 cylindrical format for scalable rechargeable battery pack designs.
The cell provides a nominal voltage of 3.65V and 18.25Wh of specified energy, supporting compact energy delivery for rechargeable battery systems.
With a specified energy density of 264Wh/kg, the cell is designed for applications where energy storage and cell weight must be balanced efficiently.
The specified cycle life reaches 1000 cycles, supporting repeated charging and discharging in rechargeable battery applications.
An initial internal resistance of ≤20mΩ provides a defined electrical characteristic for integration into compatible battery modules and pack systems.
The supplied specification lists a working or discharge temperature range from -20°C to 68°C for operation across varied environments.
The supplied fast-charge specification uses CCCV charging at 2.5A, with 4.20±0.05V and a 250mA cutoff.
The 21700 cylindrical structure supports organized cell layouts for scalable battery modules used in mobility, portable power, and energy systems.
The cell is specified for applications including e-bikes, scooters, golf carts, electric vehicles, power systems, solar energy storage, and portable energy systems.
VoltCrave Power supports specification selection and project-based customization for different battery pack architectures and customer applications.
| Parameter | Specification |
|---|---|
| Cell Size | 21700 |
| Model | INR21700 50E |
| Battery Type | Rechargeable Lithium-Ion Cell |
| Rated Capacity | 5000mAh |
| Nominal Voltage | 3.65V |
| Nominal Energy | 18.25Wh |
| Energy Density | 264Wh/kg |
| Cycle Life | 1000 cycles |
| Initial Internal Resistance | ≤20mΩ |
| Working / Discharge Temperature | -20°C to 68°C |
| Fast Charge | CCCV, 2.5A, 4.20±0.05V, 250mA cutoff |
| Weight | 69–71g |
| Applications | E-bikes, scooters, golf carts, electric vehicles, power systems, solar energy storage, portable energy storage |
Representative safety, transport and market-compliance documents supporting qualified VoltCrave Power battery solutions for international B2B projects. Certification availability varies by product model and target market — contact VoltCrave Power to confirm the applicable compliance documents for your selected product.
Safety
Market Compliance
Transport
Environmental
Safety Documentation
Cell Safety
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MANUFACTURING
End-to-end custom lithium battery manufacturing — from cell selection and BMS programming to enclosure design, branding, and global certification
Custom LiFePO4 battery enclosure dimensions, colors, terminal layouts, and connector types. Tailor voltage (12V / 24V / 48V) and capacity to your target market requirements.
Full OEM battery branding: laser-engraved logos, custom label nameplates, silk-screened enclosures, and exclusive retail packaging. Your brand, our lithium battery technology.
We assist distributors with CE, UL 1973, IEC 62619, UN38.3, and RoHS compliance for lithium battery imports. Complete technical documentation, MSDS, and test reports included for customs clearance.
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