The Sealey AK400 is a battery and alternator tester designed for quick diagnostics of 12V DC electrical systems. This compact testing tool features LED indicators that verify the condition of both batteries and alternators, making it an essential diagnostic aid for automotive professionals and mobile mechanics. The tester is fitted with 900mm of cable terminated with a probe and crocodile clips, providing flexible connection options for testing batteries and charging systems. The magnetic backing allows the unit to stick securely to metal surfaces, enabling hands-free operation whilst working under bonnets or in confined spaces. Weighing just 73g, this lightweight tester is ideal for mobile mechanics, vehicle technicians and maintenance workshops requiring a portable diagnostic solution for 12V automotive electrical systems. The LED indication system provides clear visual feedback on battery and alternator condition. Features and Benefits: • LED indicators provide clear visual verification of battery and alternator condition • Magnetic backing enables hands-free operation on metal surfaces • 900mm cable length with probe and crocodile clips for versatile connection • Lightweight design at just 73g for easy portability Specifications: Brand: Sealey Nett Weight: 0.073kg