Samsung 21700 40T Flat top battery

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  • Regular price $24.95

p>Samsung 21700 40T Flat top battery
Genuine Samsung 21700 40T Flat top Li-Ion Battery.

Brand new, in the original factory box. Not relabelled or repurposed batteries.

  • Size: 21700
  • Approximate Diameter: 21.1mm (max)
  • Approximate Length: 70.4mm (max)
  • Brand: Samsung
  • Manufacturer Rated Capacity: 4000mAh
  • Manufacturer Rated Standard Discharge Capacity: 3900mAh
  • Manufacturer Rated Max Discharge Current: 30A
  • Nominal Voltage: 3.6V
  • Peak Voltage: 4.2V
  • Protected: NO
  • Style: Flat Top
  • Color: Purple



Warning: Never short out the positive and negative terminals - never store a loose battery in your pocket or purse without protecting the ends from short circuits
Use only high quality battery chargers
Charge only with battery chargers that are made for Li-Ion batteries
Never leave charging batteries unattended
Never completely discharge Li-Ion batteries to below 2. 5V
Do not expose to heat
Never charge a Li-Ion battery over 4. 25V
Store at approximately 3. 6V - 3. 7V
Due to safer battery chemistry in IMR and INR type batteries (than ICR), they are unprotected.
Discharging to below 2. 5v can shorten the life of the battery or render it useless.

We pre-charge our batteries for you so you don't have to wait to use them!