Description
The Molicel INR21700-P42A is a high-performance 21700 cylindrical lithium-ion rechargeable battery cell known for its low internal resistance and high-drain capabilities. 
Key Specifications
  • Form Factor: 21700 (21.7 mm diameter × 70.2 mm height) 

  • Nominal Capacity: 4,200 mAh (Typical) / 4,000 mAh (Minimum) 

  • Nominal Voltage: 3.6 V 

  • Maximum Charge Voltage: 4.2 V (Standard charge current: 4.2A) 

  • Continuous Discharge Current: Up to 45A (though some community discussions on the Esk8 Forum note that running it constantly at 45A generates significant heat and shortens cycle life, with a safer continuous baseline closer to 25–35A). 

  • Discharge Temperature Range: -40°C to 60°C 

  • Protected Circuit: No (Flat-top, unprotected cell) 

  • Weight: ~67g – 70g max

 

Description

Note: This is a BIS-certified A-Grade cell from authorized distributors. Do not fall prey to cheap Grade-B cells with lower performance from unauthorized vendors.

Introducing the Molicel 21700 P42A 4200mAh 45A Battery, the ultimate all-around cell in the 21700 form factor size. With a minimum capacity of 4,000mAh and a typical capacity of 4,200mAh, this battery offers exceptional power and endurance. Its maximum continuous discharge rating of 45 Amps ensures that it can handle even the most demanding devices without compromising performance.

The Molicel 21700 P42A stands out among other batteries with its remarkable ability to deliver both high capacity and high discharge/drain ability. Whether you need long-lasting power or intense bursts of energy, this battery is designed to keep up with your needs. Unlock the true potential of your devices with this miraculous cell.

Molicel Ultra-High Power Cell Series

  • High Discharge current
  • Exceptional cycle life
  • Low temperature operation down to -40°C
  • High thermal stability, high reliability
  • Very low impedance
  • Fast Charge

 

Specifications:

Manufacturer Molicel
Model P42A
Size 21700
Positive Terminal Flat Top
Nominal Capacity 4200mAh
Continuous Discharge Rating (max) 45A
Nominal Voltage 3.6V
Maximum Voltage 4.2V
Discharge Cut-off Voltage 2.5V
Protected No
Rechargeable Yes
Approx. Dimensions 21.40mm x 70.00mm
Approx. Weight 70g (Max)
Country of Origin Canada or Taiwan
Associated Names INR-21700-P42A
Data Specification Sheet Molicel P42A Datasheet

WARNING:

The user must have appropriate understanding of lithium ion batteries before purchase. Use caution when working with and using lithium ion batteries as they are very sensitive to charging characteristics and may explode, burn, or cause a fire if misused or mishandled. Always charge in or on a fire-proof surface. Never leave batteries charging unattended. Buyer is responsible for any damage or injury caused by misuse or mishandling lithium ion batteries and chargers. No express or implied guarantee of compatibility with any device can be made. Charge only with a smart charger designed for this specific type of lithium ion battery. Do not mix and match old and new, used and unused batteries.
  • DO NOT USE WITH E-CIGARETTE, VAPORIZER, OR SIMILAR DEVICE
  • 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
  • ONLY USE WITH PROPER CIRCUITRY IN A PROTECTED BATTERY PACK
  • ONLY USE WITHIN MANUFACTURER LISTED SPECIFICATIONS
  • DO NOT STORE LOOSE BATTERY IN A POCKET, PURSE ETC. – ALWAYS USE A PROTECTIVE CASE OR BOX
  • KEEP AWAY from metal objects to prevent short circuiting
  • DO NOT short circuit
  • DO NOT use if wrapper or insulator is damaged or torn
  • DO NOT use if damaged in any way
  • DO NOT overcharge or over-discharge
  • DO NOT modify, disassemble, puncture, cut, crush, or incinerate
  • DO NOT expose to liquids or high temperatures
  • DO NOT solder, spot weld only
  • User must be familiar with handling lithium ion batteries before purchase
  • Usage of batteries is AT YOUR OWN RISK
  • ALWAYS charge in or on a fire-proof surface and never leave charging batteries unattended

Includes: 1pc

 

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