Free Economy ShippingProduct Specifications for PriorityStart! 12V ProMax Automatic Battery Protector
| BM Part #: | 12V-PROMAX |
|---|---|
| Voltage: | 12 Volt |
| Length: | 5" |
| Width: | 3" |
| Height: | 1.25" |
| Shipping Weight: | 3.00Lbs |
| Warranty: | 1 Year Factory Direct |
| Product Manual: | Download |
What's in the box:
- PriorityStart! 12V ProMax Battery Protector
- Peace of mind your vehicle will start!
- This item is covered by the Replacement Only Return Policy.
- Automatic Voltage Monitoring: Detects a slow drain and disconnects power before your battery dies.
- Instant Reconnect: Tap the brake pedal or a light switch to restore power in seconds.
- No Hard Wiring: Connects in three simple steps, ready to use in about 15 minutes.
- Rugged, Reliable Build: Shock and vibration resistant housing rated for extreme temperatures.
- Universal Fit: Works with top post or side post batteries on cars, trucks, and fleets.
- Take It With You: Move the unit to your next vehicle whenever you need to.
Product Description
Stop Losing Battery Power When You're Not Looking
Left your dome light on? Got a slow drain you can't find? A dead battery doesn't wait for a convenient time. The PriorityStart 12V ProMax automatic battery protector watches your battery's voltage around the clock and steps in before a small drain turns into a no-start morning.
Once installed, it works entirely on its own. No app, no remote, no daily habit to remember. If voltage drops below 11.7 volts while your engine is off, the ProMax disconnects the load and locks in enough reserve power to start your engine.
Built for Vehicles That Work Hard
The ProMax isn't just for the family car. Law enforcement fleets, utility trucks, and delivery vans have relied on this technology for over 20 years. It's a smart pick if your vehicle carries:
- Two-way radios or CB units
- GPS trackers or dash cameras
- Aftermarket alarms or security systems
- Chargers, TVs, or monitors that draw power even when parked
Those accessories are convenient, but they're also exactly the kind of parasitic drains that leave batteries dead by morning. The ProMax gives them a safety net.
Installation Without the Headache
You don't need a mechanic or an electrician for this one. The ProMax connects in three steps, with no cutting, splicing, or hardwiring involved:
- Connect your vehicle's existing positive cable to the unit.
- Attach the ProMax cable to your battery's positive post.
- Connect the ground wire to the negative post.
Most installs take 10 to 15 minutes. Once it's connected, reconnecting power is just as simple. Tap the brake pedal or flip a light switch, and the ProMax reconnects on its own. No buttons, no popping the hood.
Protect the Battery You Already Paid For
A single deep discharge can cut a battery's lifespan by 30 to 50 percent. Every time you jump-start a fully dead battery, you're also putting extra strain on the alternator. The ProMax helps you avoid both by catching the drain early, so your battery and charging system last longer.
The unit itself is built to handle rough conditions, with a shock- and vibration-resistant housing rated for extreme temperatures. And since it isn't wired permanently into any one vehicle, you can move it to your next car, truck, or piece of equipment when the time comes.
Ready to stop guessing whether your vehicle will start? Add the PriorityStart 12V ProMax to your cart and drive with one less thing to worry about.
Frequently Asked Questions
What's the difference between a battery protector and a jump starter?
A: A jump starter adds power to a dead battery after the fact. The PriorityStart 12V ProMax works before that happens by disconnecting your battery from drains, so it never fully dies in the first place.
Will this work with my GPS, two-way radio, or aftermarket alarm?
A: Yes. The ProMax is built for vehicles with heavy electrical demands, including two-way radios, GPS units, dash cams, and alarm systems, as long as those accessories are wired through the top of the unit.
Do I need any special tools or wiring skills to install it?
A: No. It connects in three steps with no cutting, splicing, or hardwiring. Most installs take about 10 to 15 minutes with basic hand tools.
How do I reconnect the battery once it disconnects?
A: Just tap the brake pedal or flip a light switch. Any small change in electrical load tells the unit to reconnect automatically, so there's no button to press or hood to raise.
Can I use the 12V ProMax on a dual battery setup or with high-amp accessories like a winch?
A: One unit can handle most dual battery setups, but high-draw accessories rated above 250 continuous amps, like winches or lift gates, should be wired directly to the battery rather than through the ProMax.
Cross Reference & Compatibility
Customer Reviews
After repeated jump starting and premature battery replacement caused by a parasitic voltage drain, I finally installed the PriorityStart! 12V ProMax Automatic Low Voltage Disconnect Switch. It was easy to install and so far has worked great! The truck has started when needed even after several weeks of no usage.
Doing the job I expected. So far working well.
I have a parasitic battery drain some where in my electrical system that has yet to be located. I easily installed the ProMax Battery Protector and it works. No longer do I have a completely dead battery because the Protector temporarily disconnects the battery from the main electrical system until I trigger it to reconnect. My battery is protected whether I am able to find the parasitic drain or not.
This product is great and we use it on customer vehicles when they have a slow draw that drains their batteries. Highly recommend!
Like the 1st one so much I just bought a 2nd for my 2001 toyota 4runner!!! The 1st one totally resolved my parasitic drain issue on my subaru which was a 6 amo drain!! Thanks guys!!
Fixed my car and is easy to install
I love this But! this is a problem this the led connector, it need to be replaced with a nut and Bolt Connector,
on my truck the live cable came off the led connector and almost shorted on the body of the truck, vary dangers,
I went to canadain tire and bought a led post connector with nut and bolt,and it took care of the problem. In all Great Puduct.
