The optional Ondago Hot Kup Battery is a unique element of the Hot Kup System. The external, high-power, high-capacity design allows full operation of all Kup functions. Use this battery as a portable base, in a similar manner to AC base, or attached it to the Kup for carrying. The power and flexibility of the Hot Kup Battery are proprietary and unique.• Airplane-safe• 11.1V 4500 mAh battery• Multiple charge and discharge protection circuits• LED power and charge level indicators• Portable lift off/on base• Twist lock attachment to Kup for carrying• Power button• Battery Life: up to 8 hours Airplane-safe 11.1V 4500 mAh battery LED power & charge level indicators Up to 8-hour battery life | Camping World Ondago Hot Kup Battery Base