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Battery Applications & Safety Guidelines

Application

The batteries offered on evebatteries.co.uk are suitable for a wide range of energy storage and power solutions, including:

🔋 Solar Energy Storage – For both off-grid and grid-tied renewable energy systems.
🔋 Electric Vehicles & E-Bikes – Reliable, efficient power for sustainable transportation.
🔋 Home & Industrial Energy Storage Systems (ESS) – Ensures stable power for residential, commercial, and backup systems.
🔋 Marine & RV Power – Provides dependable off-grid energy for boats, caravans, and mobile applications.
🔋 UPS & Backup Power – Keeps critical systems running during power outages.
🔋 DIY & Custom Battery Packs – Popular for hobbyists and engineers building tailored energy solutions.

Safety Guidelines & Warnings

⚠️ IMPORTANT NOTICE ⚠️
All rechargeable batteries require proper handling, charging, and storage. Misuse can result in fire, explosion, injury, or property damage.

General Safety Guidelines

✔ Only purchase and use if you understand the safety requirements for the specific battery type.
✔ Always charge using the correct charger designed for the chemistry of your battery (LiFePO4, Li-ion, NiMH, etc.).
✔ Store in a cool, dry environment away from heat, direct sunlight, or flammable materials.
✔ Follow the manufacturer’s specifications for voltage, current, and temperature.
✔ Use a Battery Management System (BMS) where required to ensure safe operation.
✔ If assembling packs, ensure proper balancing and testing before use.
✔ Resellers must pass these safety warnings on to end users.

🚫 Prohibited Uses & Handling

⛔ Do not short circuit, puncture, crush, incinerate, or attempt to modify any battery.
⛔ Do not use damaged, swollen, or leaking batteries.
⛔ Do not overcharge, over-discharge, or bypass recommended protections.
⛔ Do not expose to water, fire, or extreme temperatures.
⛔ Do not connect in series or parallel without ensuring correct balancing.
⛔ Do not solder directly—use proper connection methods (e.g., spot welding for cells).

⚠ User Responsibility & Risk Acknowledgment

  • The buyer/user is fully responsible for safe handling, charging, and storage.

  • Improper use may cause serious injury, fire, or equipment damage.

  • No guarantee of compatibility with a specific device is provided.

  • Purchase and use of batteries from evebatteries.co.uk is at your own risk.

By purchasing from us, you acknowledge and agree to follow all safety guidelines. Failure to comply may result in hazardous consequences.

21700 50E - 3.65V | 5000mAh | 1000 Cycles

Price

£0.00

EVE INR21700-50E Cylindrical NCM Battery

Unlock powerful energy storage with the EVE INR21700-50E Lithium-ion NCM cell.
Designed for high capacity, reliability, and long service life, this Grade A cell is ideal for a wide range of portable and mobility applications.

 

Unmatched Durability and Lifespan

  • Delivers up to 1,000 cycles, ensuring long-term performance and excellent return on investment.

  • Built with advanced NCM chemistry to withstand demanding usage conditions.

 

Exceptional Capacity for Extended Use

  • Offers a 5,000 mAh nominal capacity, providing reliable energy for longer runtimes.

  • Nominal voltage of 3.65 V delivers stable power output.

  • High energy density of ~264 Wh/kg, enabling compact yet powerful battery packs.

  • Supports continuous discharge currents of up to 15A for demanding applications.

 

Seamless Integration

  • Standard 21700 cylindrical format ensures easy compatibility in modern battery packs.

  • Flat-top terminal design simplifies assembly and secure connections.

  • Lightweight construction (approx. 68–71g) makes it ideal for portable and mobility solutions.

 

Technical Specifications

  • Manufacturer: EVE

  • Model: INR21700-50E

  • Nominal Capacity: 5,000 mAh

  • Nominal Voltage: 3.65 V

  • Cycle Life: Up to 1,000 cycles

  • Energy Density: ~264 Wh/kg

  • Max Continuous Discharge: 15A

  • AC Internal Resistance: ≤20 mΩ

  • Weight: ~68–71g

  • Form Factor: 21700 cylindrical (flat-top)

  • Protection: None (requires external BMS)

Quantity

Contact Us

OPENING TIMES:

Monday to Friday  9:00 - 17:00

by appointment.

Saturday and Sunday closed.

EVE Batteries UK

Elm Tree Farm,

Unit 8 Thrupp Wharf

Milton Keynes,

Bucks, MK19 7BE

Copyright © 2025 Evebatteries

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