Ring RBA4 12v 24v Voltmeter Car Battery Analyser Tester

• LED display screen shows the battery voltage.
• Connects directly to the battery terminals.
• Suitable for both 12v and 24v vehicles, polarity safe.

Auto Express Review Of The Product

• Normally, you don't get much warning that your cars battery is about to fail – the first you know about it is when you try to start the vehicle, only to be met with a stony silence. But with the latest battery monitor from Ring Automotive, you can keep an eye on the charge level without even turning a key. 

• This model has built-in automatic circuit selection to determine whether your car runs on 12V or 24V power. It attaches to your battery's terminals with crocodile clips. The monitors compact size makes for easy storage in the boot, or even the glovebox.