Kanger Tech produces this classic pen-style 1000mah top charge battery.

• Chargers with the USB Connection Charger from the top of the unit.
• Roughly 11 1/2 hours of use on one charge.
• Evod Style flush button / redesigned ego style 510 connection for increased ease of use.
• On / Off safety feature
• 5 quick clicks turn on or off this unit,
• 1 - 2 hours of charging time.

Includes 

• 1 1000 mAh Battery
• 1 charging cable (USB connection)