Samsung 40T 21700 4000mAh 35A

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Samsung 40T

Samsung 40T 21700 4000mAh 35A

The Samsung 40T 21700 is a high-performance lithium-ion battery cell engineered for applications that demand a strong balance of energy capacity and high discharge capability. Manufactured by Samsung, this cell utilises advanced 21700 cylindrical cell technology to deliver consistent power, reliable cycle life, and stable performance under load.

With a nominal voltage of 3.7V, a 4000mAh capacity, and a 35A continuous discharge rating, the Samsung 40T 21700 is ideal for high-drain devices, power tools, custom battery packs, electric vehicles, and advanced portable power systems. Its combination of capacity and current output makes it a versatile choice for both commercial and enthusiast battery builds.

This cell is widely respected in the industry for its quality, durability, and trusted performance, making it a go-to option for professionals and DIY builders alike.

 

Original price was: $15.00.Current price is: $11.00.

16 in stock

16 in stock

Specifications
  • The Samsung 40T 21700 battery is a high-performance lithium-ion cell with the following specifications:
    • Model: INR21700-40T
    • Size: 21700 (21.1mm diameter x 70.4mm length)
    • Nominal Capacity: 4000mAh
    • Nominal Voltage: 3.6V
    • Maximum Voltage: 4.2V
    • Discharge Cut-off Voltage: 2.5V
    • Continuous Discharge Rating: 35A (without temperature cut-off)
    • Maximum Pulse Discharge: 45A (up to 5 seconds)
    • Style: Flat Top
    • Rechargeable: Yes
    • Weight: Approximately 68g
    • Protected: No (unprotected cell)

    This battery is known for its high capacity and excellent discharge capabilities, making it suitable for demanding applications like power tools, electric vehicles, and high-drain devices

 

 

 

Applications
Important Information
  • Never completely discharge Li-ion battery (below 2.5V under load).
  • Charge fully to 4.2V before first use.
  • Never use force to install (insert) Li-ion battery.
  • Do not use old and new battery cells together.
  • Use only a high quality battery charger.
  • Do not expose to heat.
  • Do not short (connect) positive (top), and negative (bottom) battery terminals (contacts). Keep battery that is not in use in plastic holder (or any insulating container).
  • Never charge battery over 4.25V (another reason to use high quality battery charger).
  • Do not charge unattended unless using an intelligent charger that shuts off at full charge.
  • Do not store your Li-ion batteries fully charged (for extended period of time).
  • Store in cold and dry place at approximately 3.7V (storage charge).
  • After battery is discharged don’t leave it discharged, charge it as soon as possible.

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