Astro 7765 12-volt Onboard Battery and Alternator Load Tester

The Astro Pneumatic 7765 12 Volt Onboard Battery and Alternator Load Tester allows you to monitor the condition of your battery and charging/alternator system at the press of a button. This tool features an easy to read LED display which indicates good, fair and poor. The unit will also let you know when replacements are actually needed. Ring terminals and a hook and loop backing provide permanent mounting option. This tool is for use on all standard 12V systems with 18mm posts and weatherproof for additional safety and durability. It is manufactured to ISO9002 quality standards.