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Description
Havis ChargeGuard Select Control ModuleThe Havis ChargeGuard Select Control Module is the ultimate safeguard for your mobile electronics, engineered to shield sensitive devices from voltage anomalies that can cause costly damage and kill batteries. Built for the rigors of mobile professionalsfleet vehicles, public service units, field technicians, and on the road equipmentthe ChargeGuard Select delivers reliable, intelligent protection in a compact, automotive grade package. By actively
The Havis ChargeGuard Select Control Module is the ultimate safeguard for your mobile electronics, engineered to shield sensitive devices from voltage anomalies that can cause costly damage and kill batteries. Built for the rigors of mobile professionals—fleet vehicles, public service units, field technicians, and on-the-road equipment—the ChargeGuard Select delivers reliable, intelligent protection in a compact, automotive-grade package. By actively monitoring the vehicle’s electrical system and intercepting fluctuations before they reach critical loads, it minimizes downtime, extends battery life, and keeps your essential devices ready when you need them most. With a focus on ease of integration, durability, and configurable protection thresholds, this module is the smart heartbeat of a resilient mobile power system.
- Comprehensive voltage protection for every load: Guard against over-voltage, under-voltage, voltage transients, and load-dump events that are common in demanding mobile environments. The ChargeGuard Select defends sensitive electronics—from radios and tablets to CCTV cameras and sensors—so they stay online when the vehicle power system is unstable.
- Smart, auto-reset fault handling: When a fault is detected, the module isolates the fault and automatically resets once the electrical conditions return to safe levels. This minimizes nuisance shutdowns and reduces manual intervention, keeping critical equipment up and running without constant monitoring.
- Rugged automotive-grade design: Built to endure vibration, temperature swings, and the dusty, humid conditions typical of fleet and service vehicles. Its compact footprint is designed to tuck neatly behind dashboards, in instrument panels, or within power distribution enclosures without compromising space or airflow.
- Seamless integration with Havis ecosystems: Engineered to pair perfectly with Havis mounting solutions, power distribution modules, and vehicle-off accessories. The plug-and-play nature simplifies installation, shortens downtime, and provides a cohesive, professionally installed power protection system for your mobile office or command center.
- Energy-efficient and load-ready: Designed to minimize parasitic draw while actively protecting loads, helping to preserve battery health and extend run-time for essential equipment during extended deployments or offline operation.
Technical Details of Havis ChargeGuard Select Control Module
- Overview: Automotive-grade voltage protection module designed to safeguard mobile electronics from electrical disturbances in 12–24 V DC vehicle environments.
- Protection features: Robust defense against over-voltage, under-voltage, voltage transients, load-dump events, and reverse polarity scenarios to preserve connected devices.
- Control logic: Microprocessor-based monitoring with fast response to electrical anomalies and automatic reset when conditions stabilize.
- Enclosure and construction: Compact, rugged enclosure intended for behind-dash, cabinet, or under-seat installation with secure mounting and reliable thermal performance.
- Installation compatibility: Optimized for integration with Havis mounting systems and standard vehicle power distribution workflows, enabling straightforward deployment in fleets and field setups.
- Operating environment: Suited for mobile environments with elevated vibration, temperature variation, and exposure to dust and moisture typical of service vehicles and fleet operations.
how to install Havis ChargeGuard Select Control Module
- Identify a secure mounting location within the vehicle or cabinet that is protected from water spray and excessive heat, while keeping wiring pathways clear for power and load connections.
- Connect the ChargeGuard Select to the vehicle’s 12–24 V DC power supply using the supplied connectors and follow the vehicle’s power distribution practices, including proper fusing and protection per local electrical codes.
- Route the load wiring from the power distribution point to your protected devices (radios, cameras, tablets, sensors) and connect each load to the labeled outputs on the ChargeGuard module as specified in the installation guide.
- Configure protection thresholds and status indicators according to your equipment needs. If the module offers programmable options, set target voltage ranges, delay times, and alarm behavior to balance protection with uptime.
- Test the installation by powering up the vehicle and verifying that connected devices remain stable through normal operation and during simulated voltage events. Confirm automatic fault reset functions properly and monitor LED indicators or CAN bus feedback if available.
Frequently asked questions
What does the Havis ChargeGuard Select Control Module protect?
It protects mobile electronics connected to a vehicle’s electrical system from voltage disturbances such as spikes, dips, load dumps, and reverse polarity. This helps prevent premature device failure and battery drain, ensuring critical equipment remains operational in field conditions.
Can I use ChargeGuard Select in both 12V and 24V vehicle systems?
Yes. The module is designed for automotive environments that commonly operate at 12–24 V DC, making it suitable for a wide range of fleets and service vehicles. When in doubt, verify your vehicle’s electrical specifications and configure the module accordingly.
Will ChargeGuard Select cause any extra battery drain?
The device is engineered to protect loads with minimal parasitic draw. It engages only when protection is required and remains efficient during normal operation, helping to extend battery life and reduce downtime caused by electrical faults.
Is installation complicated for non-technical users?
While a professional installation is recommended for best results, the ChargeGuard Select is designed to integrate with existing Havis mounting and power distribution solutions, simplifying cabling and setup. Follow the official installation guide for step-by-step procedures and safety precautions.
How do I troubleshoot if devices aren’t protected properly?
Begin by inspecting cabling connections, checking the power supply for proper voltage, and confirming that loads are correctly wired to the module’s protected outputs. Look for indicator LEDs or diagnostic messages if available, and consult the manufacturer’s guide for fault codes and recommended remedies.
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4.7 ★★★★★
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Product Reviews
★★★★★ 5
Smells Like You Have Your Life Together
Scent: Bergamot, Size: 16 Fl Oz (Pack of 1)
Cremo Body Wash with Italian Bergamot, Neroli Blossom, and Fresh Vetiver smells far more expensive than it has any right to. The scent hits that sweet spot between fresh and refined. The bergamot gives it a clean citrus lift, the neroli adds a smooth floral edge, and the vetiver grounds it with a subtle, masculine depth that does not scream but absolutely speaks.
The lather is rich and concentrated, so you only need a small amount. It feels more like something you would find in a boutique hotel than on a regular store shelf. The fragrance lingers just enough to be noticed without overpowering your cologne or filling the entire room.
If you want to step out of the shower smelling like competence and quiet confidence, this one delivers. It is polished without trying too hard, and it makes everyday showers feel slightly upgraded.
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Reviewed in the United States on February 28, 2026
★★★★★ 5
Profound and timely
Format: Paperback
If I could give this book 6 stars I would. The way the world is right now, I needed to do a deep dive into anger. And I needed to see how God wants me to handle my anger. There were some very challenging and humbling parts to this book that I needed to hear. All the application questions at the end of each chapter helped me solidify what I learned and what I needed to evaluate personally. Which leads me to the statement that this book was deeply personal to me and I am grateful for the changes it’s helped me make to reflect God more and myself less.
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Reviewed in the United States on March 26, 2026
★★★★★ 5
Profoundly biblical and wise
Format: Paperback
David Powlison’s Good and Angry is a powerful book. In the book Powlison dives deep into what anger is and then gets very practical about how to biblically deal with your own anger issues (issues, he assures us, we all have).
From the outset, Powlison makes it clear that anger, while dangerous, can be handled to produce good. “At its core anger is very simple,” Powlison says, “It expresses ‘I’m against that’” (39). Powlison says that each of us handles anger differently. Some of us freeze over, some of us quietly brood, some of us simmer, some of us explode. Powlison encourages us not to look at the way others mismanage worse than us, but rather, how do we mismanage anger? Each type has their own blind spots.
Powlison then dives into anger itself. Anger is about our displeasure toward something, so what are we displeased with? And why? How are we justified? Unjustified in our anger? And what do I want to happen? Anger is physiological. As embodied beings, anger manifests itself in us physiologically. How is it impacting me when I’m angry?
Powlison then dives into mercy, what he calls a constructive displeasure, or constructive anger. When the constructive displeasure of mercy is functioning as it ought, it has four characteristics: patience (a wonderful biblical synonym of patience is “forbearance”), forgiveness (which is “mercifully unfair” (80)), charity (a spirit of magnanimity), and constructive conflict (“Mercy is not a free pass. It is an invitation to turn and repent” (94). All of these fundamentally point to the work of God and his righteous response of anger to our rebellion. “The constructive displeasure of mercy means the redemption of the world” (102). Powlison walks through how God’s anger works: through his righteous and holy response to our sin, to him taking his wrath upon his son on the cross. He concludes, “God’s wrath is your hope. God’s wrath is my hope. We don’t often hear that, but it appears everywhere in the Bible. Wrath is our hope because love masters anger” (121).
The final portion of the book steps back and helps us move through analyzing our own anger. Powlison uses James 4:1-12 to help us analyze our own anger issues. At the heart of this analysis is James’s own analysis of his hearer, that they are fighting and quarrelling because of their “desires that battle within” them. In other words, if we have an anger problem (which we all do), we have a malformed desire problem. In other words, we have a heart problem. Significant in digging into this question is the ability to analyze my own motives. The issue isn’t what has happened with me, but is my heart and my heart’s motives and desires in the midst of any given situation. Key questions to ask myself when in a moment of anger are: “what do I want?” “what do I fear?” and “what do I most love?” (154-55).
Powlison concludes with a strong word of hope. God is in the process of changing us and reshaping our heart. Our problem, Powlison says, is that we tend to talk to the wrong person in the midst of our anger – ourselves. But when we turn and talk to our Good Shepherd, we will experience hope and change.
I’m so grateful for Powlison's Good and Angry. It is a profoundly biblical and wise book with both subtle and profound insights. I know I have been impacted by the book personally and will both turn to it in the future for personal use and as a resource for others who struggle with anger.
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Reviewed in the United States on April 21, 2017
★★★★★ 5
But he is also convinced that your anger does not have to be a problem and this book is intended to help redirect so that we can
Format: Paperback
David Powlison thinks you have an anger problem, and a serious one at that. It is not because he knows you personally, but because he is one who has long studied the fallen heart. But he is also convinced that your anger does not have to be a problem and this book is intended to help redirect so that we can be both good and angry.
Anger, as Powlison who is the executive directory of CCEF, defines it, is a sense of opposition to something that is both important and wrong. That means it is a moral response. As those who are created in the image of God we all have come wired for the capacity to express anger. But, as Powlison carefully shows, we have a problem. Our anger is misdirected and misguided because of sin. Not only in the little daily frustrations and irritations, but also in extremely destructive ways. The goal, according to Powlison, is not to eliminate anger, but to have it remade into the image of God by the grace of the gospel. Far from being a therapeutic self-help book, his concern is that we come to understand how anger can coexist with forgiveness, patience, charity, and constructive displeasure.
This book should prove to be an excellent resource. However, if you pick it up with the intention to help someone else—your husband, wife, child, friend, or congregant—be prepared to confront the reality of your own anger first. Powlison has a wonderful way of acutely diagnosing anger as a personal problem for all, even those who do not consider themselves angry. A couple of highlights would be his detailed examination of God's wrath showing readers why it is actually because of God's wrath that we have hope. His chapters dealing with every day anger, long-held bitterness, and anger against God also flow from a counselor's heart as he addresses difficult and awful painful truths.
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Reviewed in the United States on September 23, 2016
★★★★★ 4
Good Christian Perspective on Anger
Format: Paperback
I read this book over the course of three months; it was not hard to get through but other books had to be read first because of library due dates and without intent, it kept getting pushed lower on my priority read list. I finally got back to it earlier this week and finished up the remaining chapters. After reading it, I have a better understanding of anger through a Christian perspective. Author David Powlinson is a counselor so he brings with him expertise in working with people who have suffered bad things. Unlike some counselors who give guidance without the Scripture, Powlinson incorporates God and His love in each chapter since God is the ultimate source of freeing us from the burden of anger and the other emotions that accompany anger. The book is broken down into four sections: Our Experience, What is Anger?, How to Change, and Tackling the Hard Cases.
Everyone is plagued by anger of different intensities and gets angry for different reasons and everyone deals with it in different ways, yet we are all the same in that we need to face our anger and seek God’s guidance so we may handle our anger in a constructive and positive way that glorifies Him. That is why I recommend this book to everyone, especially those who may be going through a hardship in life that makes them angry. I did not agree with everything Powlinson said or may not have understood where he was coming from on some things, but I still think he did a great job writing a book on a massive and complicated subject.
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Reviewed in the United States on January 6, 2018