START PAC 3324 Quick Change Ground Power Units Lead Acid - 24V 200 AMPThispatented combination ground power unit is designed for ground use to performboth engine starting and maintenance functions. This model can be used on theramp to conduct engine starting and will provide 28.5V of continuous clean noduty cycle power when plugged into 220V AC wall power. To recharge the unit,simply plug it into an AC wall power outlet and leave it plugged in when not inuse. The high tech proprietary chargers will maintain 100% battery chargewithout over charging the batteries. Built with the only cost effectivepatented Quick Change design in the world, the batteries in this unit can beeasily changed in a matter of seconds without tools, training, or downtime. Theenvironmentally responsible low VOC powder coating protect the case from wearand poor weather conditions and all-weather cover accessory is also availableas an option for this unit to further protect it from inclement weather to gainthe maximum performance and product life.