Why You Need a Battery Isolator Relay Solenoid in Your Vehicle

When it comes to maintaining your vehicle's batteries, there are many factors to consider. One often overlooked aspect of battery management is the use of a battery isolator relay solenoid. In this article, we will explore why you need a battery isolator relay solenoid and how it can benefit your vehicle.

Avoid Voltage Spikes

One reason to use a battery isolator relay solenoid is to protect your batteries from voltage spikes. A voltage spike can occur when there is a sudden increase in electrical current flowing through the circuit, which can damage your batteries. By using a battery isolator relay solenoid, you can prevent this from happening.

Another example of why you might need a battery isolator relay solenoid is if you have multiple batteries in your vehicle and you don't want them to drain each other's charge. For instance, if you have a deep cycle battery that you use for camping or running appliances, and you don't want it to drain your main battery, an isolator can be useful.

Having an isolator can also be helpful if you have to stop and start your vehicle multiple times a day, so you don't drain your starter battery. It allows you to have an auxiliary battery powering other moving parts in the vehicle, such as the stereo or power inverters that charge your portable devices.

The reason for this is that if you allow both batteries to equal out their electrical current, giving you low power on each, you might not be able to start your vehicle's engine. An isolator will allow the alternator to charge the starter battery while also protecting that battery's current so it doesn't unnecessarily travel to any auxiliary loads that aren't fully charged.

The Most Common Reason to Install a Battery Isolator

The most common reason to install a battery isolator relay solenoid is to prevent the secondary batteries from draining the starter battery. This can happen if you have multiple batteries in your vehicle and they are not properly isolated.

There are Several Reasons Why You Might Want to Install a Battery Isolator Relay Solenoid

There are several reasons why you might want to install a battery isolator relay solenoid in your vehicle. For instance, if you have multiple batteries and you don't want them to drain each other's charge, an isolator can be useful.

Types of Battery Isolators

There are two types of battery isolators: diode and solenoid. Diode battery isolators are the most commonly used type, as they are less complicated and have a longer lifespan. Solenoid battery isolators are a bit more complicated and use relays to manage the electrical current.

Smart Isolators

You can even get smart isolators that are microprocessor-controlled, which can provide additional benefits such as monitoring the batteries' state of charge and providing warnings if there is an issue with the system.

In conclusion, a battery isolator relay solenoid is a device that prevents electrical current from flowing between two batteries. It protects your batteries from voltage spikes and prevents them from draining each other's charge. There are several reasons why you might want to install a battery isolator relay solenoid in your vehicle, including preventing the secondary batteries from draining the starter battery.

By using a battery isolator relay solenoid, you can ensure that your vehicle's batteries are properly isolated and protected, which can help extend their lifespan and prevent damage. Whether you have multiple batteries or just one, an isolator is an essential device for maintaining your vehicle's electrical system.

Battery isolator relay solenoid