Associated Equipment 6/12V Carbon Pile Load Tester, with a 500-amp load, handles all 6/12V batteries. This new, value-packaged tester features a manual adjust knob and a buzzer that sounds after a load is engaged for 15 seconds. The tester also includes two large 4.5" analog meters that display amperes (0-500A) and volts (0-16V DC), as well as 500-amp safety clamps with "Flexi-Spring" cable guards. This product has a limited manufacturer warranty of 1 year (90 days on the carbon pile assembly) and also comes with 2.5' DC leads (4 AWG) with a buried tracer lead-in cable to prevent damage, measuring 7" H x 12.5" W x 11" D overall.