The CAL/AJS Battery Load Tester is a portable tool designed for testing 6V and 12V batteries in cars, vans, RVs, and farm vehicles. Made in China, this tester comes with a battery capacity of Covina and is compatible with both 6V and 12V batteries. The product also includes a warning related to California Prop 65, indicating that it may contain chemicals known to cause cancer and birth defects. Perfect for mechanics and vehicle owners looking to ensure their batteries are in top condition.