Car Battery Tester 12V/24V Automotive Relay Diagnostic Tool

Car battery and relay tester

If you’re forever tinkering with motors or just want to keep your car’s electrics in tip-top nick, this car battery and relay tester is a cracking piece of kit to have in your toolbox. Dead easy to use, it quickly tells you whether your 12V or 24V automotive relays are doing their job – or if they’re about to leave you stranded at the worst possible moment.

No more head-scratching or guesswork. Just hook the tester up, and it’ll do the hard graft for you, checking the relay’s contact data, how sharp it’s closing, and whether it’s playing ball consistently. Simple LEDs let you know what’s what at a glance – green for all clear, red for a duff relay. Saves loads of faff and gets you straight to the problem.

It’s built to last, too. The tester itself is tough, made from proper durable insulating materials, so it’ll stand up to years of knocks in the garage without splitting or smelling odd. It’s small enough to slip in your bag or glovebox, weighing next to nowt, so you can take it on the road or keep it handy for those quick jobs at home.

Whether you’re a pro sparky, a weekend tinkerer, or just like to stay ahead of any dodgy electrics, this tester makes life a whole lot easier. It works with most standard relays you’ll find in British cars and vans, and as long as the relay’s coil resistance is above 20 ohms, you’re good to go.

• You can check relays in seconds, so you’re not left chasing your tail with electrical gremlins.
• LEDs make it foolproof – one look and you know if the relay’s sound or shot.
• Solid build means it’ll last you donkey’s years, even if you’re rough with your tools.
• Proper compact – easy to carry about, so ideal for mobile mechanics or breakdown work.
• Saves you dosh by catching faults early before they lead to bigger headaches.

• If you’re storing it in the van, keep it away from moisture and give it a quick wipe now and then to keep it looking smart.
• Perfect for routine checks, troubleshooting stubborn faults, or just peace of mind before a long drive.