"This SAE Aerospace Recommended Practice (ARP) describes three general types of Ground Support Equipment (GSE) battery chargers. The battery charger typically requiring up to 8 hours to recharge a 100% discharged battery@ hereafter called ""Conventional Charger."" A charger@ hereafter called ""Opportunity Charger@"" which has the ability to charge at a slightly faster rate than a conventional charger. A charger@ hereafter called ""Fast Charger@"" which has the ability to charge at a much faster rate than a conventional charger. Recommendations that apply to all types will refer generically to ""charger."""