INR21700-40T - 4000mAh 40T 21700 25/30 Amp Battery by Samsung

The Samsung 40T 21700 cell is a high capacity high performance lithium cell, as reviewed by Mooch!

True 25 Amp continuous discharge rating and 4000 mAh capacity! If the cell can be kept cool enough, it can also reach up to 30 Amps as originally specified by Samsung, but for safety, it is best to limit this cell to loads no higher than 25 Amps.

Rated capacity at 4000mAh, but in actual use can be a bit higher.

Product Details:

• Brand: Samsung
• Model: 40T
• Size Format: 21700
• Nominal Capacity: 4000 mAh
• Nominal Voltage: 3.6 Volts
• Maximum Voltage: 4.2 Volts
• Discharge Current: 30 Amps maximum continuous (temperature limited to 80C), or 25 Amps maximum continuous nominal
• Style: Flat Top
• Protected: NO, UNPROTECTED
• Approximate Dimensions: 21.1mm Diameter x 70.4mm Tall
• Approximate Weight: 66.8 grams

Shipping Limitations of Lithium Batteries:

All lithium cells have shipping limitations, and will have restrictions placed on them. Restrictions vary depending on the cell size, quantity purchased, and whether you purchase them with or without a device that can accept these cells. In most cases, all shipments to international destinations can only be shipped via UPS using any of the shipping methods as long as the volume is less than 4 cells, or using the dedicated marked lithium shipping options for volumes greater than 4 cells. For shipments to the United States, we can ship any volume via UPS Standard (Ground) service, or up to 4 cells via any of the other UPS options. If your purchase includes a mod that can accept these cells, then the cell will be pre-installed in to your device with a strip installed between the cell and the device's battery contact to keep the circuit open for transport safety. Special handling fees for the shipping arrangements may be required for lithium-dedicated shipping options of greater than 4 cells. You may be contacted regarding your shipping arrangements if you purchase cells from us, and we will present options to you if your particular order arrangement does not comply with current regulations.

Lithium shipments within Canada can only be either CanadaPost Expedited, or UPS Ground.

General Battery Safety Caution and Warnings - PAY ATTENTION!

IMR cells do NOT have a protection circuit built in, but can go into thermal runaway if shorted out, damaged, mistreated, mishandled, punctured, or have a load applied above their safe current discharge ratings. They should never be discharged below 2.5 volts or cycle life/performance will be reduced.  It Is HIGHLY recommended that you ONLY use smart chargers when charging IMR Cells (or ANY battery for that matter).

• DO NOT PLACE LOOSE BATTERIES IN YOUR POCKET OR BAG WITHOUT A PROTECTIVE CASE
• DO NOT USE BATTERIES IF THE PROTECTIVE WRAPPER AROUND THE POSITIVE END IS PUNCTURED AND EXPOSING THE METAL CASING
• DO NOT LEAVE LITHIUM ION BATTERIES UNATTENDED WHEN CHARGING