True® Ford Dual Battery Kit – F150 F250 Raptor Ranger Transit Isolator

(8 customer reviews)

Price range: $132.95 through $152.95

The heavy-duty True® Ford® Dual Battery Kit is a specific type of battery isolator for trucks designed to work with the Ford F150, F250, Transit, Ranger, and Raptor truck series.

  • True® Heavy-Duty Dual Battery Kit for Ford F-150 & F-250 engineered for rugged reliability and maximum electrical power management
  • Fully Automated Dual Battery Control – Seamlessly manages charging and isolation, with no manual switching required, for a worry-free adventure.
  • Free Shipping via USPS first class or priority mail
SKU: DBK12F150 Category:

Description

Brand compatibility

Compatibility

A TRUE®  exclusive!

 

All the Ford® F150 dual battery kits have proprietary cables that use adhesive-lined shrink tubes to maintain their anti-vibration and corrosion-proof properties. All Ford models are offered in 7 trim levels: XL, XLT, Lariat, King Ranch, Raptor, Platinum, and Limited, which are all compatible with the True® battery isolator system.

The True® Ford® F250 dual battery kit is a system designed to provide a dependable and effective method of managing the Ford batteries that power the vehicle’s accessories, including appliances, while preserving the primary battery’s starting capability.

The Ford Transit dual battery system is made up of two batteries connected in parallel and a smart battery isolator that automatically detects voltage and isolates the two batteries when the engine is shut off, preventing the auxiliary battery from depleting the primary battery. The two batteries and the Ford® Raptor dual battery kit give the truck owner a trouble-free adventure.

The True® Ford Ranger dual battery kit is typically used in off-road vehicles where there is a high demand for power to run various accessories such as winches, lights, refrigerators, and communication devices. The Ford Raptor dual battery kit ensures that the accessories can be powered without draining the main battery, which could leave the vehicle stranded or unable to start.

Testimonials from Our Amazon Store

Frequently Asked Questions

How does the Smart Battery Isolator work?
The SBI uses voltage-sensitive technology to automatically connect or disconnect the auxiliary battery based on system voltage. It: – Combines batteries when charging (above 13.3V) – Separates them when voltage drops (below 12.8V) This protects your starting battery from being drained by accessories.

No. The True® SBI does not require ignition or alternator wire rerouting, preserving the integrity of your vehicle’s factory electrical system.

 

It’s designed for 12V systems and works with most trucks, vans, SUVs, RVs, and marine setups. Popular applications include GMC Sierra, Toyota Tundra, Ford F-Series, and Jeep builds.

Kit Inclusions

What’s in the Kit

  • 1 × True® Smart Battery Isolator (SBI) with mounting screws
  • 20 ft × #6 AWG high-flex red cable with tinned copper lugs
  • 3 ft × #6 AWG high-flex black cable with tinned copper lugs
  • 2 × Positive brass alloy battery terminal ends
  • 1 × Negative brass alloy battery terminal end
  • 3 × Loose crimp-on tinned copper cable lugs
  • 2 × Adhesive-lined shrink tubes
  • 5 × Zip ties
  • 1 × Installation instruction booklet

🔧 Key Features

Core Features of the True® Ford Dual Battery Kit

1. Smart, Fully Automatic Battery Management

  • Primary Battery Priority Charging – Ensures your starter (primary) battery is always kept fully charged before charging the auxiliary battery.
  • Automated isolation – The smart isolator automatically separates the secondary battery when the engine is off, preventing it from draining the primary battery.
  • Zero-voltage drop – Engineered for efficient power transfer with no voltage loss even under heavy load.

2. Built for Heavy‑Duty Performance

  • Handles high alternator outputs – Compatible with 12 V systems up to 150 A, ideal for trucks with high-current demands.
  • Rugged, all-weather construction – Sealed, shock‑proof housing resists water and heat (up to 130 °C).
  • Corrosion‑resistant cabling and lugs – Includes #6 high-flex red and black cables with tinned copper lugs, plus brass alloy battery terminals.

3. Plug‑and‑Play Installation

  • No alternator modification required – Designed to be warranty-friendly without cutting factory wiring.
  • DIY-friendly kit – Includes a printed wiring diagram, installation booklet, shrink tubing, zip ties, and labeled cables.

4. Wide Model Compatibility & Longevity

  • Fits Ford models from 2014–2019: F‑150, F‑250, Ranger, and Raptor series.
  • All-weather durability ensures use in harsh conditions.

5. Accessories and Added Features

  • Optional dual-display voltage meter for monitoring both batteries.
  • Comes with Ford-specific setup diagram to simplify installation.

Photos & Videos

   

Smart Battery Isolator for Lithium Battery
Smart Battery Isolator for Lithium Battery

True® Ford Dual Battery Kit – F150 F250 Raptor Ranger Transit Isolator
True® Ford Dual Battery Kit – F150 F250 Raptor Ranger Transit Isolator

 

(These videos are not endorsed or represented as an “Official Installation video” by True Amalgamated and True Amalgamated accepts no responsibility for its content. It is produced by the end-user as stated. Follow entirely at your own risk.)

 

Ford Transit dual battery kit
Ford Transit dual battery kit

 

 

  Ford Transit dual battery system installation video

Ford Transit dual battery system  

Installation

Installation Considerations

  • Compatibility: True ensure the Ford F250 dual battery kit is compatible with any vehicle model.
  • Professional Installation: While some Ford Ranger dual battery kit come with detailed instructions for DIY installation, professional installation is often recommended to ensure proper integration with the vehicle’s electrical system.
  • Battery Choice: Selecting the right type of auxiliary battery (deep cycle, AGM, etc.) based on your specific needs.

Common Uses of Ford Dual Battery Kit

  • Off-Roading: Running winches, air compressors, and additional lighting.
  • Camping: Powering refrigerators, inverters, and other camping equipment.
  • Work Vehicles: Operating power tools, mobile workstations, and other job site equipment.

🚚 Shipping Details

Carrier & Coverage
We ship all orders via USPS First Class or Priority Mail, with insurance coverage up to $100 included for most packages.

Processing Time
Orders typically ship within 1 to 3 business days and include tracking. If our warehouse anticipates any delay, we’ll notify you promptly before your order is dispatched.

Same-Day Shipping Goal
We aim to ship your order on the same day it’s placed, excluding weekends and federally recognized holidays. Orders placed after 2:30 PM Pacific Time will be shipped the next business day.

Weekend & Holiday Notice
Please note: No shipments are processed on weekends or U.S. federal holidays.

Shipping Cost
Enjoy free shipping on all our products—no hidden fees, no surprises.

❓ FAQs

Will this void my vehicle warranty?

All True® smart battery isolator kits are vehicle warranty-friendly when installed correctly, as they don’t interfere with factory wiring.

Can I install the kit myself, or do I need a professional?

The kit includes a wiring diagram and labeled cables for DIY-friendly installation, but professional help is recommended if you’re not confident with electrical systems.

Do I need to modify my alternator wiring?

No—many smart isolator kits are plug-and-play and do not require alternator bypass.

Where should I mount the second battery?

Common locations include the truck bed, under the rear seat, or in a dedicated battery tray under the hood.

What can I power with the auxiliary battery?

Accessories like 12V fridges, winches, air compressors, lights, and inverters—without draining your starter battery.

Will the isolator work with a smart alternator?

Yes—smart isolators are designed to detect voltage changes and work seamlessly with modern alternator systems.

Can I add solar charging to this setup?

Absolutely. You can integrate a DC-DC charger with solar input to keep your auxiliary battery topped up even when the engine is off.

How long will the batteries last?

Properly managed dual battery systems can extend battery lifespan by preventing over-discharge and balancing usage.

Additional information

Location

US, CANADA

8 reviews for True® Ford Dual Battery Kit – F150 F250 Raptor Ranger Transit Isolator

  1. Carl Thos

    Had some cheap dual battery isolator, but they had issues. I threw them in the trash and got a new one from True. Though pricey, this heavy-duty smart battery isolator is well-functioning and hasn’t had any issues in the last four months.

  2. Justine Hundson

    This is a neat little arrangement that separates my Ford F150 battery from the wheelchair lift’s auxiliary battery. This keeps it from emptying the primary and auxillary battery,  which would be a negative thing as I intended to use them as a backup. The auxillary battery won’t  be used for anything until I need it.

  3. Charles_harris

    I’m a novice radio operator, and I use a home lithium battery to power the radios. The only way I could get my 2011 F-150 to charge both batteries without causing a problem with the battery management system.

    Furthermore, lithium cannot be paralleled with a flooded AGM or flooded lead acid battery; they must be separated. I tried a variety of approaches without success until I tried the Smart Isolator. And it works perfectly, keeping both the start battery and the lithium home battery completely charged.

  4. Samuel Myers

    My work trailers has two deep cycle batteries, and the cables that go from it to my tow car’s alternator are specifically designed for that purpose. Since leaving the trailer batteries plugged in would deplete my F150 starting battery, I wanted to be able to use the batteries without having to unplug them. This robust battery relay worked as intended. I wired it such that the relay control circuit is ignition switched.
    This way, when my tow car is shut off, the relay will immediately cut the trailer batteries off from the tow car battery. Although the True battery relay is a little pricey, it is totally worth it for my purpose.

  5. Joseph Burtona

    Once the truck trailer was plugged into the F150, I used it to isolate the battery. Because it was simple to install and I adore the voltage reading gauge, I am really pleased with this True F150 battery isolator.

  6. Ariel Lyndon

    This is what I’m doing to isolate my second battery, which is in the truck back. When the voltage falls too low, this separates my primary battery from my backup battery automatically. This ensures that you have enough power to turn on the engine. It also has the handy function of being manually turned on and off. This means that you may change the battery in your truck without interrupting your computer’s power supply by just turning this switch to manual, which will keep the additional battery charged even after you detach the primary battery. This preserves power to the dash’s radio, clock, and other settings that often require a reset following a battery disconnect.

  7. Philip Guilford

    Compared to the old Pain Less battery isolator system that was discontinued years ago, This True battery isolator was far simpler to install. There is no need for extra switches or to be concerned about changing batteries while the device is operating. Thus far, it operates well on both batteries.

  8. William Ludrtwig

    I had an issue with the auxiliary battery isolated and not working. I called TrueAm staff and answered the phone professionally. They helped me troubleshoot the issue and within 5 minutes he had another True smart battery isolator next day mailed to my residence.

    Highly recommend!!

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