Starting & Electrical System Service Electrical System Test Comprehensive electrical system test/inspection includes: Alternator Starter Battery and battery cables Batteries We offer high quality INTERSTATE™ BATTERIES with excellent warranty policies. INTERSTATE™ BATTERIES provide the technological advances of PINNACLE™ Technology. High-temperature cycling, increased number of starts, and improved recharge-ability are just a few of the features of these superior batteries. Whatever your battery needs are we can supply you with the right battery.