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Cole Hersee 48090-BX Heavy Duty Battery Isolator 90 Amp

Manufacturer

Cole Hersee

<p>Cole Hersee has earned a reputation as a trusted manufacturer of electrical components for automotive, marine, and commercial vehicle applications. With decades of experience in the industry, the company specializes in producing reliable switches, solenoids, and electrical control devices that meet the demanding requirements of professional installers and vehicle enthusiasts alike.</p><h3>Electrical Expertise Across Multiple Applications</h3><p>Cole Hersee's engineering focus on electrical system components has made them a go-to source for mission-critical parts. Their product line spans everything from basic on-off switches to sophisticated electrical management solutions designed for harsh operating environments. The brand's commitment to quality manufacturing ensures that each component can withstand vibration, temperature extremes, and the rigors of daily use in demanding applications.</p><h3>Switches and Control Solutions</h3><p>Among Cole Hersee's most recognized products are their <a href="/7300-cole-hersee-ignition-switches-200571">ignition switches</a>, which provide reliable starting system control for a wide range of vehicles and equipment. These switches are engineered with precision contacts and durable housings that resist wear over thousands of cycles. Whether replacing a failed original equipment switch or upgrading an older system, Cole Hersee ignition switches deliver dependable performance that operators can count on.</p><h3>Solenoids and Heavy-Duty Components</h3><p>The company's <a href="/7300-cole-hersee-solenoids-200974">solenoids</a> serve critical functions in starter circuits, auxiliary power systems, and various electrical control applications. Cole Hersee solenoids feature robust construction with high-quality copper windings and corrosion-resistant terminals, making them suitable for both automotive and marine installations where reliability is non-negotiable.</p><h3>Lighting and Visibility Solutions</h3><p>Cole Hersee also manufactures specialized lighting components, including <a href="/7300-cole-hersee-roof-marker-light-10052">roof marker lights</a> that help improve vehicle visibility and meet DOT requirements for commercial trucks and trailers. These lighting products combine durable construction with efficient illumination, ensuring compliance and safety on the road.</p><h3>Why Professionals Choose Cole Hersee</h3><p>Mechanics, fleet managers, and vehicle builders appreciate Cole Hersee components for their consistent quality and broad compatibility across vehicle platforms. The brand's focus on electrical fundamentals—proper contact materials, secure terminals, and weather-resistant designs—means fewer callbacks and longer service life. For anyone maintaining or upgrading vehicle electrical systems, Cole Hersee offers proven solutions backed by extensive field testing and application engineering.</p>

Part Number

48090-BX
06/20/2036 11:44 PM
Sale Price

$124.42

In Stock (10+)

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Usually delivered within 2 days

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No Hassle Returns

No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The Cole Hersee 48090-BX is a heavy-duty 90-amp battery isolator designed for DC negative ground electrical systems. This essential component allows two batteries to be charged simultaneously from a single power source while preventing cross-discharge between batteries.

Key Features:

  • 90-amp continuous rating for reliable power management
  • Isolates batteries to prevent the higher-charged battery from draining into the lower-charged battery
  • Enables dual battery charging from a single alternator or charging source
  • Heavy-duty construction for marine, RV, and commercial vehicle applications
  • Designed for 12-volt DC negative ground systems

This battery isolator is ideal for vehicles and vessels with dual battery systems, ensuring your starting battery remains charged while allowing auxiliary batteries to power accessories. The diode-based design provides automatic isolation without requiring manual switching.

Products specifications

Amps

90

Application

1 Alternator/2 Batteries

Voltage

12-36

By far the fastest shipping and best prices on the web. Ordered it one day and it showed literally the next. Will definitely be buying from again!

very easy

Seamless Purchase and great communication

Love prices and availability of needed products.

Fast and efficient

no problem's very good

Is been a great experience, just hope nothing goes wrong when I receive my part

ReadyLift came in as expected. I was a little nervouse since it was $90 less than anywhere else. But, I was overjoyed when it came in on Friday when I ordered it on Tuesday! Cheap prices, fast shipping, great product. I couldn't ask for more. I just wish they carried every product I wanted!

autoplicity has the lowest price and fast service .I will definitely use autoplicity for my next auto parts purchase

Good so far...

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