MBT-LA Multi Battery Tester The ZTS Lead Acid Multi-Battery TesterT (MBT-LA) is designed for anyone working with lead acid batteries. This includes inspection and service of security/alarm systems, UPS, emergency lighting, telecommunications, medical, facility services, and more. The MBT-LA provides a comprehensive means of testing the state of charge and battery condition for 2-volt, 4-volt, 6-volt, 8-volt, and 12-volt lead acid battery types. This microprocessor-controlled instrument tests popular SLA [AGM, Gel) batteries using a patented, high accuracy pulse load. After a fully automatic test cycle, percentage of remaining battery capacity is indicated on the LED bar display. Test results are easy to understand. Uses 4AA batteries (not included) Made in U.S.A. Patent 6,823,274