Samsung 40T 21700

Availability:

Available on backorder

Description

Samsung INR 21700 4000mAh Batteries

Specifications:

  • Style: Flat Top
  • Chemistry: INR
  • Nominal capacity: 4000 mah
  • Max Continuous Rated Discharge: 35A (at 25 degrees Celsius), 45A (at 80 degrees Celsius temperature cut off)
  • Max Pulse Current (Less than one Second Pulse): 45A
  • Dimensions: 70.4 ± 0.2 mm (L) x 21.1 ± 0.2 mm (D)
  • Weight: 68g (Max)
  • Discharge Cut-off Voltage: 2.5V
  • Nominal voltage: 3.6V
  • Full Charge Voltage: 4.2V ± 0.05V
  • Cycle info: Capacity drops to 60% after 250 full charge/discharge Cycles
  • Standard Charge: CC/CV at 1A / 4.20V ± 0.05V, 200mA Cut-off
  • (Max) Rapid Charge: CC/CV at 4A / 4.20V ± 0.05V, 100mA Cut-off
  • Operational Charging Temperature Range: 0 to 45 degrees Celsius (best below 45 degrees Celsius)
  • Operational Discharging Temperature Range: -20 to 60 degrees Celsius (best below 45 degrees Celsius)
  • You can store them for 1 years at 0 to 25 degrees Celsius, 3 months at 0 to 45 degrees Celsius and 1 month at 0 to 60 degrees Celsius (in other words, store them in a cool place and they’ll last longer)
  • Monthly auto discharge rate: 0.5% or less

Notes: (Important)

  • Never completely discharge battery (below 2.5V under load or 3.0V unloaded)
  • Charge Fully (to 4.2V) before first use
  • Never use a lot of strength on battery installation
  • Use only proper battery chargers that is designed for 21700 type of battery
  • Do not expose to heat / sunlight
  • Do not connect the positive contact to the negative contact without an appropriate load
  • Be aware of the current limits in the specification and never exceed the number
  • Never keep a spare battery loose in a pocket, purse, backpack, or etc? Always use proper case for loose batteries. If it shorts against a piece of metallic material, it can be dangerous
  • Never charge the battery up to 4.3V or above
  • Do not charge unattended
  • Do not keep your li-ion batteries fully charged for an extended period of time (more than weeks)
  • If you must store the battery then leave it in a proper case / box in a cool & dry place at around 3.6V to 3.7V
  • Never try to charge or discharge li-ion battery with battery charger that is not made for Li-ion battery

The user/buyer need to understand Li-Ion rechargeable batteries before using, charging, discharging and assembly. Use caution when working with Li-ion cells, they are very sensitive to charging characteristics and may explode or burn when mishandled.  Always charge in or on a fire-proof surface. Never leave charging batteries unattended. We will not be held responsible for damage if there is any modification of the batteries/chargers in any form. We are not responsible for any damage caused by misuse or mishandling of Li-Ion batteries and chargers.

Additional information

Weight 1.88 oz

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