Prevent Battery Discharge with a Battery Isolator

Are you trying to ensure your batteries are always charged and ready to go? Look no further than our list of the five best battery isolators to keep your car running smoothly!

Battery isolators are devices used in vehicle electrical systems to allow multiple batteries to be connected at once. An isolator is used to combine two batteries when an alternator is charging ( engine running) and isolate them when not charging ( engine off) so you can still start your vehicle

Battery isolators also provide extra protection against short circuits, helping to prevent fires and other damage caused by an accidental spark. Battery isolators are commonly used in RVs, boats, and other vehicles with many electrical devices installed.

How Mechanicaddicts Chooses the Battery Isolator

Mechanicaddicts takes the time to ensure their customers get the best battery isolator option. They consider various factors, including product certification, build quality, conductivity, and performance ratings.


Stinger SGP35 500-AMP Relay and Isolator

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Why We Like These Battery Isolators

The Stinger SGP35 500-AMP Relay and Isolator is the perfect solution for those who need a powerful, reliable connection with their vehicle. The 500 AMP High Current Relay/Isolator prevents primary battery discharge while providing power on demand.

It helps to maintain peak performance and ensure your vehicle starts when you need it most. With the Stinger SGP35, you get a robust design and maximum current protection that can be used in any situation, including high temperatures or tough conditions, without compromising functionality.

Things to Know

The Stinger SGP35 500-AMP Relay and Isolator is the perfect choice for anyone looking to extend their battery life. This reliable, universal 12-volt application offers a simple solution for any vehicle that needs additional power control.

The sturdy construction of the relay and isolator ensures it can withstand tough conditions while providing superior performance. Its easy installation process allows this product to be used in most vehicles without professional help.

About this item:

  • Current Rating: 500 Amps
  • Brand: STINGER
  • Coil Voltage: 12 Volts
  • Contact Current Rating: 500 Amps

MaySpare 200 Amp Mobile Audio Continuous Relay and Battery Isolator

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Why We Like These Battery Isolators

The MaySpare 200 Amp Mobile Audio Continuous Relay and Battery Isolator is the perfect device for getting long-term power out of your vehicle’s battery. This isolator allows you to combine two batteries when an alternator is charging, ensuring you can always start your car.

With 12VDC voltage and dimensions of 2-3/8” W x 2-3/8” D x 3-3/4” H, this isolator will fit perfectly in any electrical setup. It offers continuous power handling of up to 200 amps and surge power handling of up to 300 amps, giving you plenty of leeway in what it can support. An ideal choice for anyone looking to get extra performance out of their car or truck!

Things to Know

The MaySpare 200 Amp Mobile Audio Continuous Relay and Battery Isolator are designed to provide a reliable power source for your audio system. Unlike conventional isolators, the isolator eliminates the need for a voltage drop to the second battery.

It is easy to install with simple wiring connections that only require two small studs connected to the ground and the other to ignition on the source from the fuse box - and it doesn't matter which order you connect them in. With its high amperage relay rating, this product ensures dependable performance at all times.

About this item:

  • Current Rating: 300 Amps
  • Brand: MaySpare
  • Operation Mode: Automatic
  • Coil Voltage: 12 Volts
  • Maximum Switching Current: 1 Amps

RECOIL 500 Amp Mobile Audio Battery Isolator

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Why We Like These Battery Isolators

The RECOIL 500 Amp Mobile Audio Battery Isolator is an ideal solution for those looking to ensure reliable power for their audio system. This isolator can handle up to 500 Amps continuously and 700 Amps surge, allowing excellent performance even during peak times.

In addition, it eliminates multiple battery drains by keeping the battery banks from drawing on each other's energy, preventing your equipment from draining your main battery when operating with the engine off. With its efficient design and unmatched reliability, this isolator is a must-have accessory for all serious audio technicians!

Things to Know

The RECOIL 500 Amp Mobile Audio Battery Isolator is a reliable and powerful power solution for your mobile audio needs. This isolator offers many advantages, including extending battery life without creating a voltage drop to the second battery like conventional isolators.

Furthermore, it has excellent waterproof performance, ensuring high quality in weather conditions. With its robust design and cutting-edge technology, this isolator will provide long-lasting power and peace of mind.

About this item:

  • Current Rating: 500 Amps
  • Brand: RECOIL
  • Operation Mode: Automatic

Wztepeng 500 Amp Battery Isolator

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Why We Like These Battery Isolators

The Wztepeng 500 Amp Battery Isolator is the ideal solution for applications that require battery isolation. This device allows multiple batteries to be effectively isolated, making it perfect for mobile audio setups, marine vehicles, and powered sports equipment.

It is also designed to prevent voltage drops when powering AV or navigation systems, drawing less than 1 amp while the car runs. The Wztepeng 500 Amp Battery Isolator offers a reliable way to safely isolate your batteries and ensure your sound system runs at its best without interruptions or power surges.

Things to Know

Introducing the Wztepeng 500 Amp Battery Isolator, an ideal solution for extending battery life. This 500 amp continuous duty relay is designed to provide superior performance and reliability compared to solid-state battery isolators. It also offers easy installation and immediate start-up capabilities.

This product is made from high-quality materials and ensures durability and long-lasting use in your daily driver systems. With the Wztepeng 500 Amp Battery Isolator, you can be sure that your auxiliary batteries are charged quickly and efficiently without voltage drop issues.

About this item:

  • Contact Type: Normally Open
  • Current Rating: 500 Amps
  • Brand: Wztepeng
  • Operation ModeBattery
  • Coil Voltage: 12 Volts

CNAODUN 200 Amp Battery Isolator

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Why We Like These Battery Isolators

The CNAODUN 200 Amp Battery Isolator is a high-quality, durable solution for connecting multiple batteries and providing reliable power to your vehicle's systems. This 12V isolator is waterproof and flame-retardant, giving you peace of mind in any environment.

The package has everything you need for easy installation: one 200 amp battery isolator, two screws, two copper wiring terminals, and two heat shrink tubes. With its superior performance and robust construction, the CNAODUN 200 Amp Battery Isolator covers you no matter where the road takes you.

Things to Know

The CNAODUN 200 Amp Battery Isolator is the perfect solution for combining two batteries when an alternator is charging and isolating them when not. It provides a safe and convenient installation, with its integrated molding design that eliminates burrs, which in turn helps to save battery consumption.

This product is designed to apply to multiple battery isolator systems and can be used in marine, mobile audio, off-road, power sports, RVs, and vehicle applications.

About this item:

  • Connector Type: Crimp
  • Contact Material: Silver
  • Contact Type: Normally Open
  • Current Rating: 200 Amps
  • Mounting Type: Wall Mount

Battery Isolator FAQs:

1. What Is a Battery Isolator?

A battery isolator is an electronic device that connects multiple batteries safely and efficiently. It prevents the batteries from being overcharged or discharged too quickly and ensures that the charge from one battery is not used to power another. Battery isolators are commonly used in vehicles, boats, and other applications with multiple batteries.

2. Do You Need a Battery Isolator for Dual Battery Systems?

Yes, a battery isolator is necessary for a dual-battery system. A battery isolator allows you to charge both batteries simultaneously and prevents them from draining each other. 

This is important because if one storm drains the other, it can cause permanent damage to the electrical system. Battery isolators also protect against overcharging, voltage spikes, and reverse polarity. 

Recreational vehicles and utility vehicles have more than one battery, generally a starting battery and a secondary battery or auxiliary battery for backup power and to handle auxiliary loads. You will need a strong battery to operate a recovery winch as well.

3. What Is the Difference between a Battery Separator and a Battery Isolator?

A battery separator is an electronic device that is used to separate two or more batteries that are connected in parallel. It allows multiple battery banks to be charged independently, preventing one battery from being overcharged while the other is undercharged.

A battery isolator is a device that isolates a single battery from the rest of the system. It allows the battery to be charged independently, preventing it from being overcharged or drained by the other storms in the system.

4. What Is the Purpose of a Battery Isolator?

The primary purpose of a battery isolator is to protect against overcharging and reverse charge flow while also allowing for simultaneous charging from a single source. Battery isolators are designed to prevent the current from flowing between batteries, ensuring each battery retains its charge level. 

This helps ensure all batteries have sufficient power to meet their purpose in the vehicle or boat. Additionally, battery isolators help protect against electrical fires in multi-battery systems, as they keep excess current away from other components and wiring. 

Battery isolators are also used to prevent the draining of a single battery, which can happen if one battery is discharged more quickly than others. Finally, they help protect against accidental short circuits by keeping all batteries at the same voltage level. This helps reduce the risk of electrical hazards and fires in multi-battery systems.

5. How Do I Install a Battery Isolator?

The installation of a battery isolator depends on the type of vehicle or boat you are using. Generally speaking, it is best to consult your owner’s manual for specific instructions regarding the installation process. 

Typically, installing a battery isolator involves connecting one of its terminals to the positive terminal on each battery in the system and the other terminal to the negative terminal of the weak or dead battery being charged. 

Once wired, the isolator will act as a middleman between all of the batteries in the system and ensure that each battery receives an equal charge from a single source. Additionally, it will help protect against overcharging and reverse charge flows, which can damage your batteries or cause electrical fires.

6. What Is a Shore Power Cable?

A shore power cable is a power cable used to connect a boat or other vessel to an external power source, such as a dock or marina. The cable typically connects one end to the shore power source and the other to the vessel, which is connected to the vessel's electrical system. Shore power cables provide electricity to the boat while it is docked, allowing the ship to run its electrical systems without running its generator.

Final Thoughts about Battery Isolator

Choosing the right battery isolator ensures your electronics are powered safely and securely. Whether you're looking for a simple one-battery system or an advanced multiple-battery setup, we've covered you with our wide selection of high-quality battery isolators. Investing in a premium battery isolator today could save time, money, and stress, so don't wait any longer!

Thank you for reading!

Your friend,

Todd

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