4000mAh 35A 21700 Rechargeable Lithium Battery MaxAmps Lithium Batteries

Our new high-amp 21700 battery offers the highest voltage under load of any Li-ion cells we have tested. After months of research, MaxAmps is proud to introduce the MaxAmps 4000mah 21700 battery. They offer a true 35 amp discharge rate for all your high-amp setups like high-powered flashlights. They offer the best combination of power, capacity, and life cycles of any 21700 batteries available in the world. They also come with a lifetime warranty.

In addition, we can build custom packs based on your requirements using these cells. Just send us an email or give us a call for a quote.

SPECS:

• Nominal Capacity: 4000mAh
• Maximum Discharge Current: 35A(high-amp)
• Positive Terminal Style: Flat Top
• UNPROTECTED(No PCB)
• Nominal Voltage: 3.6V
• Minimum Voltage: 2.5V
• Maximum Voltage: 4.2V
• Standard Charge Current: 2A(0.5C)
• Maximum Charge Current: 4A(1C)
• Dimensions: Approx. 21x70mm
• Weight: Approx. 68g
• Energy Density: 212 Wh/kg

WARNING:

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 UNPROTECTED E-CIGARETTE, VAPORIZER, or similar device.

USAGE OF THIS BATTERY IS AT YOUR OWN RISK!

• DO NOT USE WITH UNPROTECTED E-CIGARETTE, VAPORIZER, OR SIMILAR DEVICE
• DO NOT STORE LOOSE OR IN A POCKET, PURSE, ETC. ALWAYS USE A PROTECTIVE CASE OR BOX FOR STORAGE AND TRANSPORT
• BATTERIES MAY EXPLODE, BURN, OR CAUSE A FIRE IF MISUSED OR MISHANDLED
• 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 battery, wrapper or terminal insulator is damaged or torn
• 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
• 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