TRW 672039 Battery Isolator 85-AMPS

( Brand: Trw ), ( Part Type: Battery ), ( Manufacturer Part Number: 672039 )

Review TRW Multi battery Isolator Amps fits 1985

The TRW 672039 Multi-Battery Isolator 85 is a versatile and essential component for vehicles equipped with multiple batteries or auxiliary power sources. This isolator is specifically designed to maintain the charge of one battery while allowing another battery to be used for accessory loads without discharging the primary battery.

This isolator features eight inputs and five outputs, making it capable of handling multiple battery configurations. Each input can accept a voltage range of 6 to 32 volts, while the output voltage ranges from 6 to 16 volts. This wide voltage range makes it suitable for use in various types of vehicles, including cars, trucks, RVs, and marine applications.

The TRW 672039 Multi-Battery Isolator 85 is built with high-quality components to ensure reliable and long-lasting performance. It utilizes solid-state technology, which provides faster switching times and more precise voltage regulation compared to mechanical relays. The isolator also features reverse polarity protection and overload protection to prevent damage to the unit and the connected batteries.

Installation of the TRW 672039 Multi-Battery Isolator 85 is straightforward, with clear labeling on the unit to identify each input and output. It can be mounted in various locations, including under the hood or in the engine compartment, and comes with mounting hardware for easy installation.

The TRW 672039 Multi-Battery Isolator 85 provides a number of benefits for vehicles with multiple batteries or auxiliary power sources. It ensures that the primary battery remains fully charged while providing power to accessories, preventing the need for frequent jump starts or battery replacements. It also prevents the risk of damaging the starter battery by providing a separate power source for accessories. With its wide voltage range, versatile input and output configurations, and reliable performance, the TRW 672039 Multi-Battery Isolator 85 is an essential component for any vehicle with multiple power sources.

The TRW 672039 Multi-Battery Isolator 85 is a device designed to manage and isolate multiple batteries in a vehicle. Here are some potential pros and cons of buying this product:

1. Protection of Batteries: The TRW Multi-Battery Isolator prevents the discharge of one battery into another. It keeps the batteries fully charged and protected from damage caused by parasitic loads.

2. Flexibility: This isolator can be used with various battery types, including AGM, Gel, and Flooded batteries. It is also suitable for different applications such as automotive, marine, and RVs.

3. Easy Installation: The isolator comes with clear instructions and is easy to install. It requires minimal wiring and can be installed in a few hours.

4. Durability: The TRW Multi-Battery Isolator is built to withstand harsh conditions. It is designed to resist corrosion, vibration, and moisture.

5. Voltage Sensing: The isolator automatically switches between battery sources based on voltage levels. It ensures that the starting battery is always used first, while the auxiliary battery is only used when necessary.

1. Cost: The TRW Multi-Battery Isolator may be more expensive than some other isolators on the market.

2. Size: The isolator is larger than some other options, which may make it difficult to install in certain applications.

3. Complexity: Although the installation process is relatively simple, some users may find the wiring diagrams and connections confusing.

4. Limited Capacity: The isolator is designed for up to two batteries. If you need to manage more batteries, you may need to purchase additional isolators or upgrade to a more advanced system.

In conclusion, the TRW 672039 Multi-Battery Isolator 85 is a reliable and effective solution for managing and isolating multiple batteries in a vehicle. Its protection features, flexibility, and ease of installation make it a worthwhile investment for those who require multiple battery systems. However, its cost, size, complexity, and limited capacity may be drawbacks for some users. Ultimately, the decision to purchase this isolator depends on your specific needs and budget. If you require a simple and cost-effective solution for managing two batteries, this isolator is an excellent choice. However, if you need to manage more batteries or require advanced features, you may need to consider other options.

part # 672039 prices

• $40.00-$62.89

specifications wiringwench:

• for years: 1985
• brand: Trw
• part type: Battery
• manufacturer part number: 672039

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• other
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general wiringwench:

• condition: New other see details
• Car Truck Parts Accessories > Starters, Alternators, ECUs Wiring > Other Starters, Alternators, ECUs Wiring

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• cost: $11.00
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• quantity: 1
• started: December 13, 2025
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• # reviews: 2084
• rating: 98.0%