The RG24-15 is a Concorde® Platinum Series® Aircraft Battery. The Platinum Series® is comprised of premium hand made AGM Aircraft Batteries with excess power for many applications.  This 2010 - 24V battery maintained on a BatteryMinder 24/7. Guaranteed to be fully functional, passes all BatterMinder Model 128CEC1 internal testing. Approved for all Mooney models using 24V systems. $299 plus shipping