Efest 21700 3700mAh Battery

Experience the ultimate in battery technology with the Efest IMR 21700 3700mAh 35A Flat Top Battery. This high-performance rechargeable battery boasts a remarkable 3700mAh capacity, providing long-lasting power and reliability for a variety of applications including power tools, high-end flashlights, and electronic mods. With a maximum continuous discharge rate of 35A, this battery ensures safety and efficiency, making it an ideal choice for high-demand electronics and custom battery packs.

• Exceptional Capacity:Features a substantial 3700mAh capacity, delivering extended runtime for devices, minimizing the need for frequent recharges.
• High Discharge Rate: Offers a powerful 35A max continuous discharge rate, perfect for high-performance devices that require a substantial power supply.
• Versatile Use: Ideal for a wide range of applications including power tools, thanks to its robust build and flat top design.
• Safety Features: Unprotected to provide the highest performance while maintaining safety with a cut-off voltage of 2.5V, protecting devices from over-discharge.
• Durable and Reliable: Built to last with a maximum voltage of 4.2V ± 0.05V and designed to withstand rigorous use in various electronic configurations.

SPECIFICATIONS
You MUST read the safety warnings and resources before purchasing, using, and/or handling batteries.

⚠ WARNING:

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Use caution as misusing or mishandling the battery may cause a FIRE or EXPLOSION which may result in personal injury, property damage, or death. The user must have an appropriate understanding of the potential dangers of LITHIUM ION BATTERIES before purchase and usage. No express or implied guarantee of compatibility, suitability, or fitness for any particular purpose or device can be made. This battery is manufactured and sold for the intended use of system integrations with proper protection circuitry or battery packs with a BMS (battery management system) or PCB (circuit board/module). This battery is neither designed nor intended to be used with an E-CIGARETTE, VAPORIZER, or similar device and MUST NOT be used with such devices due to RISK OF FIRE or EXPLOSION. If purchasing this battery for resale purposes, you MUST forward ALL warnings to ALL customers for their reference and safety!

This cell is unprotected and intended for use in protected battery packs only and NOT individually or as a standalone product. In order to operate safely it must have additional protection in the form of a PCB (printed circuit board) or BMS (battery management system), which is not included.

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• DO NOT USE WITH E-CIGARETTE, VAPORIZER, OR SIMILAR DEVICE
• Additional battery manufacturer and battery industry association warnings for using lithium-ion batteries in e-cigarette or vaping devices can be viewed here: Be-CigaretteSafe.org
• BATTERY IS ONLY FOR USE IN PROTECTED BATTERY PACKS
• ONLY ASSEMBLE A BATTERY PACK IF YOU ARE COMPETENT IN DOING SO
• DO NOT STORE BATTERY/CELL LOOSE OR IN A POCKET, PURSE, ETC. ALWAYS USE A PROTECTIVE CASE OR BOX FOR STORAGE AND TRANSPORT
• WHEN NOT IN USE, ALWAYS STORE LITHIUM ION BATTERIES IN THE PROTECTIVE CASE/BOX IN WHICH BATTERIES WERE DELIVERED
• Misusing or mishandling lithium ion batteries can pose a SERIOUS RISK of PERSONAL INJURY, PROPERTY DAMAGE, OR DEATH
• BATTERIES MAY EXPLODE, BURN, OR CAUSE A FIRE IF MISUSED OR MISHANDLED
• Usage of batteries is AT YOUR OWN RISK!
• ONLY use with proper protection circuitry
• DO NOT short circuit intentionally or unintentionally
• KEEP AWAY from metal/conductive objects to prevent short circuiting
• DO NOT use if PVC wrapper or terminal insulator is damaged or torn
• DO NOT use if battery is damaged in any way
• DO NOT over-charge or charge above the maximum voltage rating
• DO NOT over-discharge or exceed the continuous discharge rating
• DO NOT modify, disassemble, puncture, cut, crush, or incinerate
• DO NOT expose to liquids or high temperatures
• DO NOT solder onto battery, spot weld only
• DO NOT use force to install or install in reverse/backwards
• ONLY use within manufacturer’s specification
• KEEP AWAY from pets and children
• ALWAYS charge in or on a fire-proof surface and never leave batteries charging unattended
• ONLY use a smart charger designed for this specific type of battery
• DO NOT mix and match brands and models, old and new, used and unused batteries
• STOP immediately if while charging/storing/using the battery it emits an unusual smell, feels hot, changes color or shape, or appears abnormal in any way
• It is your responsibility to determine that your charger or device is functioning properly
• If exposed to battery electrolyte, flush with water immediately and/or immediately contact a physician or emergency services
• DO NOT throw away in trash; contact your local jurisdiction for proper recycling or disposal
• Resellers MUST forward ALL warnings to ALL customers for their reference and safety