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18650 Batteries

What are 18650 li-ion cells?
18650 li-ion cells are cylindrical rechargeable cells, shaped like giant AA alkaline batteries. They have a higher nominal discharge voltage of 3.7V, which gives them a significant power advantage over the older alkaline(1.5V) and nimh/nicad(1.2V) chemistries. 18650 li-ion cells can be found in laptops, power tool battery packs, electric cars and countless consumer goods.

Why are they called 18650?
The term 18650 comes from the IEC naming scheme for round cells based on their physical dimensions. The first two digits are its diameter in millimeters, while the last 3 digits are for its height in 1/10th millimeters. Based on this naming convention, the original 18650 cells would be 18mm in diameter x 65.0mm in length.
Samsung INR 18650 20A 2500mAh Lithium Ion Battery 3.7V 25R
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$6.99
$3.99

Samsung INR 18650 20A 2500mAh Lithium Ion Battery 3.7V 25R

Samsung

Specifications: Model: INR18650-25R Size: 18650 Style: Flat Top Nominal Capacity: 2500mAh Max Discharge: 20A  Nominal Voltage: 3.6V Protected: No...

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$6.99
$3.99
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Samsung INR 18650 15A 3000mAh Lithium Ion Battery 3.7V 30Q
$4.99

Samsung INR 18650 15A 3000mAh Lithium Ion Battery 3.7V 30Q

Samsung

Specifications: Model: INR18650-30Q Size: 18650 Style: Flat Top Nominal Capacity: 3000mAh Max Discharge: 15A Nominal Voltage: 3.6V Protected: No ...

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$4.99
LG INR 18650 20A 3000mAh Lithium Ion Battery 3.7V HG2
$4.99

LG INR 18650 20A 3000mAh Lithium Ion Battery 3.7V HG2

LG

Specifications: Model: INR18650-HG2 Size: 18650 Style: Flat Top Nominal Capacity: 3000mAh Max Discharge: 20A  Nominal Voltage: 3.6V Protected: No...

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$4.99
Sony 18650 20A 3000mAh Lithium Ion Battery 3.6V VTC6A
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$7.99

Sony 18650 20A 3000mAh Lithium Ion Battery 3.6V VTC6A

Sony

Specifications: Model: US18650VTC6A Size: 18650 Style: Flat Top Nominal Capacity: 3000mAh Max Discharge: 20A  Maximum Continuous, 25A Nominal Vol...

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$7.99
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Sony 18650 25A 2600mAh Lithium Ion Battery 3.7V VTC5A
$6.99

Sony 18650 25A 2600mAh Lithium Ion Battery 3.7V VTC5A

Sony

Specifications: Model: US18650VTC5A Size: 18650 Style: Flat Top Nominal Capacity: 2600mAh Max Discharge: 25A  Maximum Continuous, 35A Nominal Vol...

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$6.99
LG INR 18650 20A 2500mAh Lithium Ion Battery 3.7V HE4
$4.49

LG INR 18650 20A 2500mAh Lithium Ion Battery 3.7V HE4

LG

Specifications: Model: INR18650-HE4 Size: 18650 Style: Flat Top Nominal Capacity: 2500mAh Max Discharge: 20A  Nominal Voltage: 3.6V Protected: No...

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$4.49