Stop Dead Batteries Before They Happen with PriorityStart!

Posted on September 17, 2025 by

It’s one of the greatest fears of car ownership: You get in, turn the key, and… nothing. That realization you have a dead battery is more than just an inconvenience; it can disrupt an entire day or even week. Modern vehicles have constant power draws: GPS systems, key-less entry, and even leaving the cabin light on by accident can be enough to leave you stranded.

But there’s a solution! With a PriorityStart! automatic battery protector and cut-off switch, you can have a simple, permanent accessory that keeps you from ever being stuck with a dead battery again.

What Exactly is a PriorityStart! Unit?

Simply put, a PriorityStart! is a smart, computerized electrical cut-off switch that acts as a guardian for your vehicle’s battery. It attaches to your battery and constantly monitors your its voltage. If the voltage drops below a safe level (around 11.7 volts) while the engine is off, the unit automatically disconnects the electrical load. This saves the remaining power, ensuring there’s enough to start your car. Best of all, this is totally automatic. Zero dials or knobs to turn. You never have to remember to do a thing.

The Easiest Project You’ll Ever Do

Positioning a PriorityStart! on your battery is a quick and easy project that anyone can handle in about 15 minutes. Anyone can install it, regardless of their experience level.

Safety First: Remember to turn off the vehicle and remove the key from the ignition before you begin.

Tools Required: A simple wrench and this guide. That’s it.

  • Item A. PriorityStart! Unit
    Item B. Post Adapter
    Item C. PriorityStart! Pos (+) Red Cable
    Item D. U-Clip
    Item E. PriorityStart! Ground Wire
    Item F. Attachment Band
    Item G. LED Power Indicator

Step-by-Step Instructions:

  1. Top-Post Batteries: Use a 7/8′′ wrench to firmly tighten the post adapter (Item B) into the top of the PriorityStart! unit.
  2. Side-Post Batteries: Use a 7/8′′ wrench to remove the post adapter (Item B) from the unit. Firmly tighten the adapter into the positive terminal of the battery.
  3. Install the band (Item F) around your battery.
  4. Reconnect the negative (−) battery cable to the negative battery post and secure the u-clip (Item D) to the terminal.
  5. Connect the PriorityStart! red cable (Item C) to the positive post on your battery.
  6. Connect your vehicle’s positive cable to the PriorityStart! unit.
  7. Place the PriorityStart! unit under the band (Item F).
  8. Connect the ground wire (Item E) to the u-clip. And, done!

Finding the Right PriorityStart! for You

Choosing the right PriorityStart! is simple. Here are our most popular models to help you decide:

  • 12V ProMax: The go-to choice for most standard cars, trucks, and SUVs.
  • 12V ProMax H.D.: This heavy-duty model is designed for commercial fleets, work trucks, and vehicles with high-demand accessories like two-way radios and advanced lighting systems. It’s very popular with law enforcement.
  • 24V ProMax H.D.: Perfect for large commercial vehicles, farm equipment, and other heavy-duty applications that use a 24-volt system.
  • Mobility ProMax: Specifically engineered to prevent dead batteries on mobility scooters, wheelchairs, and other personal mobility devices.

Important: What PriorityStart! Can’t Do

It’s important to know the limits of any product. A PriorityStart! is designed to protect a good battery from an electrical drain, but it cannot save a battery that is already damaged or dying.

The unit works by disconnecting the electrical load to prevent deep discharge. However, if a battery is bad, its voltage will continue to drop on its own. For this reason, we strongly recommend installing the PriorityStart! with a new, fresh battery for the best results.

The Benefits: Why We Love It (and Why You’ll Love It)

  • Total Peace of Mind: You can leave lights on or a door open without the fear of a dead battery. It’s always working in the background to protect your ability to start the engine.
  • Saves You Money: A single deep discharge can permanently damage a battery and cut its lifespan in half. By preventing this, PriorityStart! can save you from having to buy a new battery years earlier than you should.
  • No Hassle: There are no buttons to push, no remotes, or any need open the hood once it’s installed. To reconnect the power to start your car, just activate any small load. Hitting your brake pedal or turning on your headlights will suffice.
  • A Smart Investment: The PriorityStart can be removed from one vehicle and installed to another. It’s a one-time purchase that can serve you for years.

Conclusion

Stop worrying about being stranded. The PriorityStart! offers a simple, automatic solution that protects your battery, saves you money, and gives you back your freedom.

Don’t wait for your next dead battery to take control. Visit our site today to find the right PriorityStart! model for your vehicle and get back on the road with confidence, knowing that free shipping is available on all models.