WARNING: This Product Contains Nicotine. Nicotine is an addictive chemical.

Samsung 40T INR 21700 4000mAh 35A Flat Top Battery

  • Sale
  • Regular price $39.99 USD

If you would like a price break, order in 2 packs, 4 packs, 8 packs, etc.

The Samsung 40T outperforms every 18650 and 20700 in regulated devices at up to about 20A-25A (60-75W). It's a wonderful balance between power and capacity, and is currently among the top 21700 cells on the market as of October 2018!


  • Flat Top Dimensions : 70.2mm (L) x 21.1mm (D)
  • Weight : ~66.87g
  • Typical Capacity : 4000mAh
  • Protected: NO, UNPROTECTED
  • Max Continuous Discharge Rate: 35A
  • Voltage : 3.6V
  • Full Charge Voltage : 4.2V

  • Battery Safety & Other Information

    KNOW YOUR BATTERY SAFETY! Please see our battery safety page HERE. CANNOT SHIP BATTERIES VIA DHL! If your order contains batteries and you are outside of the US or Canada, your order will ship via an alternative method of our choosing closest to your original choice.

    Battery Testing

    At Lightning Vapes, we've always provided the best authentic tools & materials on the market at a price you can afford, shipped within 24 hours. Thanks to a keen eye, honest vendors, and plenty of informatinonal resources, we've been fortunate enough to have avoided ever placing a knock-off cell for sale on our website. However in lieu of recent events regarding more aggressive tactics by companies who sell re-wrapped, mis-labled cells, we have decided to become more aggressive ourselves when it comes to spotting fakes. In addition to thorough visual inspections of every batch of cells we receive, we are also now going to be conducting our own discharge tests. These tests will be made available to you via product gallery photo on the respective product page. To be clear, these tests serve only to validate that the cells are performing as per their manfuacturer stated specifications. We will not be testing any cells above their stated limits. For details regarding our testing equipment & method, please click HERE