Lithium Ion 11.1V / 10.4AH rechargeable carbon fiber battery. The Settop ADL Battery is an accessory for ADL radios and makes it possible to power the radio for base corrections or repeater purposes. You will not need to use complicated external cables and car batteries to power your radio. The high capacity of the Settop ADL battery allows you to work with your radio for a long time. The Settop ADL battery has been designed for outdoor use; and the best quality components and carbon fiber have been applied to it.