Rotary 9074 Charging System Tester by Rotary Original price $77.89 Current price $28.50 Sold out 1 2 3 4 5 6 7 8 9 10+ Quantity Quantity Sold out PRODUCT INFORMATION Type Other PRODUCT DESCRIPTION DESCRIPTION Checks Battery Condition & Starting as well as Charging System. Both 6 & 12 Volt. Full Instructions. Model #1092 Dixson.