|18650 (3.7V, 9900mAh)
Actual Capacity: 1200mAh (As Tested)
Rechargeable Li-ion Battery
with a USB Battery Charger
ReChargeable Li-Ion BatteryModel: GTF 18650
Nominal Capacity: 1200mAh
Size:18 x 65mm
Don't Short Circuit,
Don't mix batteries.
|USB Cable Charger
for 18650Socket: USB
Brand Name: Binmer
Use: Standard Battery
Quick charge: No
Socket Standard: USB
Material: Metal & Plastic
3.5mm USB cable & charger
|What is a 18650, in the world of Lithium-ion batteries?|
'18650' battery size dimensions: 18mm by 65mm = '18650'
|18 ||The first two digits "18" stand for li-ion battery diameter in millimeters. In this case width of the battery is 18mm.|
|65 ||The third, and fourth digit stand for length in millimeters. That would be 65mm.|
|0? ||For those who want to know why zero is there, this is how battery manufacturers calculate battery lengths: 650 divided by 10 is 65mm.|
The Metric system(millimeters) is used almost always when we see li-ion battery with numbers like: 18650, 18500, 16340, 16650, 14500 & 26650. These are the most common li-ion battery sizes. So, now when you see '18650' battery, you'll know the meaning of all those numbers.Important: Battery dimensions in the real world can, and will vary.