website
FREE SHIPPING ON ORDER OVER $20
Explore Better lithium ion batteries | POOVER

Sunpower INR21700 4000mAh 35A High Drain 21700 rechargeable battery Flat Top


Large Capacity
INR21700 21700 battery 4000mAh rated capacity will provide longer running time for all power needs
Stable Voltage Platform
High-performance INR lithium-ion technology, stable discharge voltage, high compatibility & stable device performance
Extremely Long Cycle Life
21700 li ion battery supports high current 500 cycles @ DOD 80% discharge & charge
High Discharge Rate
Maximum continuous 35A discharge, high drain 21700 battery meeting the high energy requirements of advanced flashlights and electronic devices.
Protection device
In extreme situations, the internal pressure of 21700 battery cell is too high, and the explosion-proof valve will open to release the pressure.

Regular price $3.99 $2.59

Save: $1.40 (35%)
/

In stock Pre-order Now Order now, Only 10000 left! Sold out

Sunpower INR21700 4000mAh 35A High Drain 21700 rechargeable battery Flat Top

Estimated Delivery : - .

EU US UK AU AE SA NZ HK IR IL UA NO CH Delivered within 10-15 days.
2 Years Warranty & 7/24 Techical support
30 Days Hassle Free Returns

WE SHIP WORLDWIDE, PLEASE CONTACT US FOR A CUSTOM SHIPPING QUOTE.


Sunpower INR21700 4000mAh 35A High Drain 21700 rechargeable battery Flat Top

DESCRIPTION

INR21700 21700 lithium ion battery 4000mAh high-capacity batteries for extended runtimes.

Equipped with high-performance INR lithium-ion technology, they offer a stable voltage platform and compatibility for reliable device performance. 

With a 500-cycle lifespan and a 35A high discharge rate, they're perfect for advanced flashlights and electronic devices.

Includes a safety valve for protection against high-temperature pressure.

 

Technical Specifications:

  • Model: INR21700-4000S
  • Brand: Sunpower
  • Capacity: 4000mAh
  • Voltage: 3.7V
  • Cell Type: Lithium Ion - INR / Lithium Nickel Manganese Oxide / LiMnNiO
  • Charge: Yes
  • Top Type: Flat Top
  • Protection: Anti-explosion valve (can not replace BMS/PCB board)
  • 21700 battery holder / case: included
  • Please refer to the specification section for other parameters (Contact us for brand specs, or we'll send them post-purchase)


Failure to read and follow the lithium-ion battery 21700 safety instructions and warnings may result in fire, personal injury and property damage if the battery is charged and/or used improperly.

 

SPECIFICATION

SAFETY INSTRUCTION

Safety Characteristic : No leakage, No fire, No explosion

  • Overcharge
  • Forced discharge
  • Short Circuit test
  • Crush test
  • Heating test (130°C)
  • Altitude/Low pressure simulation test
  • Free drop test
  • Vibration test
  • Temperature Cycling Test

Environment Adaptation Performance: No leakage, No fire, No explosion

  • Altitude/Low pressure simulation test
  • Free drop test
  • Vibration test
  • Temperature Cycling Test

WARNING

Warnings and Cautions in Using the Battery

To prevent a possibility of the 21700 battery rechargeable from leaking, heating or explosion, please observe the following

Precautions:

  1. When using new battery cells 21700 for the first time or after long term storage, please use the battery charger
  2. specifically for that purpose fully charge the battery before use.
  3. Do not disassemble or open, crush, bend or deform, puncture, or shred;
  4. Do not modify or remanufacture, attempt to insert foreign objects into 21700 button top battery, immerse or expose to
  5. water or other liquids such as water, seawater, drinks such as soft drinks, juices, coffee or others, or
  6. expose to fire, explosion, or other hazard.
  7. Do not short circuit a battery or allow metallic or conductive objects to contact the battery terminals.
  8. When use the 21700 battery, must ensure the charge and discharge voltage of the battery is between 2.50V to 4.25V.
  9. Avoid dropping the phone or battery. If the phone or battery is dropped, especially on a hard surface, and the user suspects damage, take it to a service center for inspection.
  10. The battery replacement shall be done only by either 21700 battery button top supplier or device supplier and never be done by the user.

REVIEWS

Customer Reviews

Be the first to write a review
0%
(0)
0%
(0)
0%
(0)
0%
(0)
0%
(0)

Recently Viewed Products