These high performance 18650 lithium ion 3.7V batteries offer high performance and long life from a compact package. They are 18.6mm in diameter and 65mm long. 

Lithium-ion rechargeables offer excellent properties for use in consumer devices, including excellent energy density and low maintenance. Lithium-ion do not suffer from memory effect and possess no regular cycling that batteries often require to extend their service life. 

Common Application for 18650 cells include:

• Laptop computers 
• LED flash lights 
• Electric vehicles 
• Power tools 
• Converting AA or AAA powered products over to higher performance (providing voltage matches). 

Suitable Charger (Sold Separately): XTAR MC2 Charger

Note: Lithium Ion batteries cannot be Express Post, hazardous to air freight.