Specification:

• Type: Panasonic 18650 Li-ion battery
• Voltage: 3.7v～4.2v
• Capacity: 3400mAh
• Protection board: no
• size: 65×18mm
• Weight: 50g

18650 rechargeable lithium batteries 3400mAh 3.7V Panasonic Battery。 This high capacity lithium battery has built-in protection circuits to prevent over charge and over discharge. It will charge to 4.2v and has a discharge cut-off voltage at 2.75v. This 3400 mah will allow you to get an incredible runtime out of the flashlights that can handle them. Roughly the same size has double CR123 batteries. Hi-max technology will continue to provide you excellent lithium batteries.