Efest 25EF 18650 2500mAh 20A Battery


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Sale price$5.99

Description

Efest 25EF 18650 2500mAh 20A Battery

The EFEST 25EF 18650 20A 2500mAh Flat Top Rechargeable Battery is a powerhouse of energy, tailor-made for high-demand applications. Designed to deliver consistently reliable performance, this battery boasts a 2500mAh capacity and a robust 20A maximum continuous discharge rate, making it a perfect match for high-drain devices like vaping mods, tactical flashlights, and portable electronic devices. With its premium INR chemistry and flat-top design, the EFEST 25EF combines longevity with peak performance, all within the popular 18650 battery size.

  • High-Energy Capacity:Features a substantial 2500mAh capacity, providing extended usage times for your essential devices without frequent recharging.
  • Robust Discharge Rate: Equipped with a 20A continuous discharge rate, ideal for powering high-performance devices that require sustained, intense power.
  • Versatile Compatibility: Perfectly sized for 18650-compatible devices, fitting a wide range of electronics like portable power packs.
  • Durable and Reliable: Built with INR chemistry for optimal performance and safety, offering a stable and durable power source.
  • Unprotected Design: Offers flexibility and high output necessary for specialized devices, emphasizing direct, powerful applications in an unprotected flat top configuration.


SPECIFICATIONS

Manufacturer: EFest
Size: 18650
Nominal Capacity: 2500mAh
Nominal Voltage: 3.7V
Maximum Voltage: 4.2V
Discharge: 20A Maximum Continuous
Positive: Flat
Protected: NO, UNPROTECTED
Rechargeable: Yes
Dimensions: 18.0mm x 65.0mm
Weight: 42.53g
Country of Origin: China


⚠ Important Safety Warnings

Improper handling or misuse of this lithium-ion battery can result in FIRE, EXPLOSION, or THERMAL RUNAWAY, causing personal injury, property damage, or death. Users must read and follow all safety guidelines before purchase and use. Click here to review the full safety guidelines.

  • Critical Warning: Never carry loose batteries in your pocket, purse, or bag. Loose batteries can come into contact with metal objects like keys or coins, causing a short circuit, which may result in severe burns, fire, or explosion. Always store or transport batteries in a protective case or box.
  • Intended Use: This battery is designed for integration into protected battery packs with a Battery Management System (BMS) or Protection Circuit Board (PCB). It is not intended for standalone use or use in devices such as e-cigarettes or vaporizers.
  • What is Thermal Runaway?
    • A dangerous chain reaction where heat generated by a failing battery causes it to overheat further, potentially leading to fire or explosion.
    • Causes: Overcharging, short circuits, physical damage, or exposure to high temperatures.
    • Prevention: Use a smart charger, avoid physical damage, and store batteries in a cool, dry place.
  • Storage & Transport: Always store batteries in protective cases or boxes to prevent accidental contact with metal objects. Never store loose batteries in pockets, purses, bags, or near conductive materials.
  • Inspection: Do not use if the PVC wrapper, terminal insulator, or casing is damaged, dented, leaking, or bulging. These are signs of internal damage or instability, and continued use could result in failure, fire, or explosion.
  • Charging: Use a smart charger designed specifically for lithium-ion batteries and ensure that the charger's voltage matches the battery's specifications. Never overcharge, over-discharge, or leave unattended while charging.
  • Prohibited Activities: Do not short circuit, modify, puncture, crush, expose to liquids, or solder directly onto the battery (spot weld only).
  • Emergency Response: If the battery shows signs of thermal runaway (e.g., smoke, swelling, or heat), immediately stop use and move it to a non-flammable surface (e.g., concrete or sand). For fires, use a Class D fire extinguisher or sand—never use water.

Disclaimer

IMR Batteries is not responsible for any damages, injuries, or claims arising from improper use, handling, or failure to follow these safety guidelines. Lithium-ion batteries require strict adherence to all safety protocols. It is the reseller's responsibility to ensure all safety warnings and product guidelines are effectively communicated to their customers. Users and resellers assume full responsibility for the safe handling, usage, and distribution of this product.

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