Everstart Maxx 4 Amp Battery Charger

Let me tell you about the day that changed my relationship with car maintenance forever. It was a frigid January morning when I found myself staring at a car that refused to start, with important meetings looming and no time to wait for roadside assistance. That’s when I realized that having a reliable battery charger isn’t just convenient—it’s essential for any vehicle owner.

After that experience, I dove headfirst into researching battery chargers and eventually landed on the Everstart Maxx 4 Amp Battery Charger. Now, after using it for over two years across multiple vehicles and seasonal changes, I’m sharing everything I’ve learned about this compact powerhouse that’s become my garage essential.

Understanding How the Everstart Maxx 4 Amp Battery Charger Works

The Everstart Maxx 4 Amp Battery Charger might look simple, but there’s some impressive technology under its modest exterior. At its core, this device delivers a controlled 4-amp charge to your battery, which strikes an excellent balance between charging speed and battery care.

When you connect it to a battery, the charger first analyzes the battery’s condition. This diagnostic phase is crucial because it determines how the charger will proceed. If the battery is severely depleted, the charger will begin with a soft start mode, gradually increasing the current to prevent damage. As the battery approaches full charge, it automatically reduces the current to prevent overcharging.

What I’ve found particularly impressive is the multi-stage charging process. The charger moves through bulk charging (when most of the energy is delivered), absorption charging (when it maintains a constant voltage while reducing current), and finally float or maintenance charging (where it delivers just enough power to keep the battery at optimal levels).

This intelligent approach means I can connect my vehicles’ batteries and essentially forget about them—the charger does all the thinking for me. The days of worrying about overcharging or battery damage are long behind me.

The Versatility Champion: What Batteries Can It Charge?

One of the first questions I had when considering this charger was about its compatibility with different battery types. After all, between my car, motorcycle, lawn mower, and the various seasonal vehicles my family owns, we have quite the collection of batteries that occasionally need attention.

I’m happy to report that the Everstart Maxx 4 Amp charger is remarkably versatile. It works with:

• Conventional lead-acid batteries (the standard in most cars)
• AGM (Absorbent Glass Mat) batteries
• Gel cell batteries
• Deep cycle batteries
• Marine batteries

The only major type it doesn’t support is lithium-ion batteries, which use a completely different chemistry and charging profile. For standard vehicles, however, this charger has you covered.

What’s particularly noteworthy is how well it handles AGM batteries, which are becoming increasingly common in newer vehicles and those with start-stop technology. These batteries require more precise charging parameters, and not all basic chargers can accommodate them properly. The Everstart Maxx, however, has specific settings for AGM batteries, ensuring they receive the correct charging profile.

I’ve successfully used this charger on my wife’s sedan with a conventional battery, my SUV with an AGM battery, and even my father-in-law’s vintage tractor. This versatility alone makes it worth the investment for multi-vehicle households.

Car Battery Performance: Real-World Results

When it comes to car batteries specifically—which is primarily what I use this charger for—the Everstart Maxx 4 Amp has proven itself repeatedly. The 4-amp charging rate is perfect for maintaining car batteries throughout the year, especially during seasonal storage.

For context, most car batteries range from 40 to 100 amp-hours in capacity. With a 4-amp charger, you can expect to fully charge a moderately depleted 60 amp-hour battery in approximately 12-15 hours. This isn’t the fastest charging solution on the market (there are 10-amp, 15-amp, and even more powerful options available), but it’s ideal for overnight charging and regular maintenance.

What I particularly appreciate is how it handles partially discharged batteries—the most common scenario for most of us. If your car has been sitting unused for a couple of weeks, or if you accidentally left an interior light on overnight, the 4-amp charger will typically restore enough charge to start your vehicle within 2-3 hours.

I’ve found that using this charger proactively has extended the life of my vehicles’ batteries. Before I owned a quality charger, I was replacing batteries every 2-3 years. Now, with regular maintenance charging during seasonal changes and before long periods of inactivity, I’m seeing much longer battery lifespans.

The Value Proposition: Cost vs. Benefits

Let’s talk dollars and cents, because value matters when adding tools to your garage arsenal. The Everstart Maxx 4 Amp Battery Charger typically retails between $35-$45, depending on where you purchase it and any ongoing promotions.

At first glance, this might seem like a modest investment, but its true value becomes apparent when you consider the alternatives:

• Professional battery charging services: $25-$50 per occurrence
• Roadside assistance for a dead battery: $75-$100+ per call
• Premature battery replacement due to improper maintenance: $100-$300 per battery
• Lost time and inconvenience of unexpected battery failures: priceless

When I factor in that I’ve used this charger at least a dozen times over the past two years—not only for emergency situations but also for preventative maintenance—the investment has paid for itself many times over.

What’s more, the charger’s construction quality suggests it will continue serving me for many years to come. The casing is durable, the cables are appropriately thick with well-constructed clamps, and the electronics have proven reliable through repeated use in various conditions.

Where to Purchase: Finding the Best Deal

The Everstart Maxx line is primarily associated with Walmart, which is where I purchased mine. You’ll typically find it in their automotive department, often displayed alongside other battery maintenance products. The benefit of buying from a physical Walmart location is the ability to see the product firsthand and the convenience of immediate availability.

However, I’ve also seen this charger available through:

• Walmart’s online store (sometimes with free shipping or store pickup)
• Amazon (though often through third-party sellers)
• eBay (both new and used units)
• Various auto parts retailers (sometimes under slightly different branding)

From my experience and research, Walmart generally offers the most competitive pricing, especially during seasonal promotions. I’ve noticed they often discount automotive accessories during spring and fall—the seasons when batteries commonly fail due to temperature changes.

If you’re looking to save a few dollars, watch for sales around major holidays, particularly Black Friday and the start of summer road trip season. I’ve seen this charger discounted by as much as 25% during these promotional periods.

Charging Time: What to Expect

One of the most common questions I had—and one I hear from friends considering this charger—concerns charging time. The 4-amp rating gives you a theoretical baseline, but real-world performance can vary.

Based on my experience with various batteries in different states of discharge:

• A moderately discharged car battery (still able to turn over the engine, but weakly): 4-6 hours to full charge
• A significantly discharged battery (won’t turn over the engine): 8-15 hours
• A nearly dead battery (no lights, no electrical response): 15-24 hours
• Routine maintenance charging of a healthy battery: 2-4 hours

Remember that these times are approximations and will vary based on battery capacity, age, condition, and ambient temperature. Charging is typically slower in very cold environments, for instance.

What I’ve found most practical is to connect the charger in the evening and let it run overnight. By morning, even a significantly discharged battery is usually ready to go. For regular maintenance, I often connect it on a Sunday afternoon and remove it before dinner—this “top-up” approach helps keep batteries in peak condition without requiring constant monitoring.

The Peace of Mind Feature: Automatic Shutoff

One feature that initially drew me to the Everstart Maxx 4 Amp charger—and continues to impress me—is its automatic shutoff capability. This isn’t just a convenience feature; it’s an essential safety mechanism that prevents overcharging, which can damage batteries and potentially create dangerous situations.

The charger uses voltage sensing technology to determine when a battery has reached full charge. Once the battery reaches its optimal voltage (typically around 14.4-14.7 volts for standard lead-acid batteries), the charger automatically switches from active charging to float mode, maintaining the battery at full charge without overcharging it.

This automatic transition has given me tremendous peace of mind. Before owning this charger, I would set timers or make mental notes to disconnect manual chargers, inevitably forgetting on occasion and risking battery damage. Now, I can connect the charger and genuinely forget about it, confident that it will manage the charging process intelligently.

The LED indicators clearly display the charging status, transitioning from red (charging in progress) to green (charging complete, maintenance mode active) when the process is complete. This visual confirmation is reassuring and eliminates guesswork about the battery’s status.

AGM Battery Compatibility: Specialized Care

Modern vehicles increasingly use AGM (Absorbent Glass Mat) batteries, which offer better performance and durability but require more specialized charging parameters. When I upgraded my SUV a few years ago, it came equipped with an AGM battery, making this compatibility a sudden priority for me.

The Everstart Maxx 4 Amp charger handles AGM batteries exceptionally well. It features a specific AGM setting that adjusts the charging profile to match the requirements of these batteries. AGM batteries typically prefer a slightly lower charging voltage and are more sensitive to overcharging, both considerations that this charger accounts for.

Selecting the AGM mode is straightforward—there’s a clearly marked button that toggles between standard and AGM charging profiles. The charger confirms your selection with an indicator light, providing reassurance that you’ve chosen the correct setting.

I’ve used the AGM mode repeatedly on my vehicle’s battery, particularly during winter months when cold starts put additional strain on the electrical system. The battery has maintained its performance admirably, which I attribute partly to proper charging and maintenance with this device.

If you’re unsure whether your vehicle uses an AGM battery, check the battery label (which typically indicates the type) or consult your owner’s manual. When in doubt, the vehicle manufacturer’s specifications are the best resource.

Overnight Charging Safety: Can You Sleep Soundly?

Safety is paramount when dealing with electrical devices and batteries, which contain potent chemicals and can produce explosive gases under certain conditions. One question I frequently hear concerns the safety of leaving the charger connected overnight.

Based on my experience and the charger’s design, the Everstart Maxx 4 Amp Battery Charger is safe for overnight charging due to its comprehensive safety features and automatic monitoring systems.

I regularly leave mine connected overnight without concern, but I do follow these precautions:

• Ensure the charging area is well-ventilated
• Keep the charger away from flammable materials
• Verify that all connections are secure before leaving it unattended
• Make sure the battery and charger are positioned on a stable, flat surface

The charger includes reverse polarity protection, which prevents damage if you accidentally connect the clamps incorrectly. It also features spark-resistant technology that minimizes the risk of sparks during connection, which could potentially ignite battery gases.

Additionally, the thermal protection system monitors the charger’s temperature and will shut down the unit if it detects overheating. This multi-layered approach to safety has given me confidence in the charger’s overnight operation.

Safety Features: Protection You Can Count On

Diving deeper into the safety aspects, the Everstart Maxx 4 Amp charger incorporates several protection mechanisms that have proven their worth in my experience:

1. Reverse Polarity Protection: If you connect the positive and negative clamps incorrectly, the charger simply won’t operate. An error light illuminates, prompting you to correct the connection without damaging the charger or battery.
2. Short Circuit Protection: The charger automatically detects short circuits and shuts down to prevent damage or safety hazards.
3. Overcharge Protection: Once the battery reaches full charge, the charger switches to maintenance mode, preventing overcharging damage.
4. Thermal Protection: Internal temperature sensors monitor the charger’s operation and shut it down if overheating occurs.
5. Spark-Resistant Connections: The charger is designed to minimize sparking when connecting to battery terminals—an important safety feature given that batteries can emit flammable hydrogen gas.
6. Integrated Cable Management: The housing includes molded channels for storing the cables when not in use, reducing trip hazards and preventing insulation damage.

These features work together to create a safety net that protects both your battery and your property. While I always recommend following basic battery safety practices (like wearing eye protection and ensuring good ventilation), these built-in protections provide an additional layer of security.

User-Friendly Operation: Step-by-Step Guide

One aspect I particularly appreciate about the Everstart Maxx 4 Amp charger is its straightforward operation. There’s no complex programming required or confusing menu systems to navigate. Here’s my typical process:

1. Preparation: Ensure the charger is unplugged and the vehicle is turned off. If charging while the battery is still in the vehicle, make sure all electrical systems are off to prevent drawing power during charging.
2. Connection: Connect the red positive (+) clamp to the battery’s positive terminal first, then connect the black negative (-) clamp to the negative terminal. For in-vehicle charging, you can alternatively connect the negative clamp to a clean, unpainted metal part of the vehicle’s frame for additional safety.
3. Power Up: Plug the charger into a standard 120V outlet. The charger will automatically begin analyzing the battery.
4. Select Mode (if needed): If you’re charging an AGM battery, press the mode button to select AGM charging. For standard lead-acid batteries, no selection is necessary as this is the default mode.
5. Monitor Initial Status: Watch the indicator lights for a few moments to ensure proper operation. If any error lights illuminate, disconnect in reverse order (negative first, then positive) and troubleshoot the issue.
6. Let It Work: Allow the charger to run its course. The charging LED will remain illuminated during active charging.
7. Completion: When charging is complete, the “Charged/Maintaining” LED will illuminate. At this point, the battery is fully charged, and the charger has switched to maintenance mode.
8. Disconnect: When you’re ready to disconnect, first unplug the charger from the wall outlet. Then remove the negative (black) clamp followed by the positive (red) clamp.

This process has become second nature to me after numerous charging cycles, but even for first-time users, the intuitive design and clear indicators make operation straightforward. The included instruction manual provides additional guidance, though I found I rarely needed to reference it after the first use.

Jump-Starting Capabilities: Important Limitations

An important clarification I always make when friends ask about this charger: The Everstart Maxx 4 Amp Battery Charger is not designed to jump-start vehicles. This is a maintenance charger intended for restoring charge to batteries over several hours, not providing the immediate high-current burst needed to start an engine with a dead battery.

For jump-starting, you would need either:

• Traditional jumper cables and a donor vehicle
• A dedicated jump starter (often called a “jump box” or “booster pack”)

The 4-amp output simply isn’t powerful enough to provide the 100+ amps typically required to crank an engine. If you attempt to start a vehicle with a severely discharged battery while this charger is connected, you risk damaging both the charger and potentially the vehicle’s electrical system.

That said, if your battery is just moderately depleted, charging it for 30-60 minutes with this charger might provide enough power to start the vehicle afterward. I’ve used this approach successfully when I’ve found a vehicle with a battery that’s run down but not completely dead.

For comprehensive roadside preparedness, I actually keep both this charger and a compact lithium jump starter in my vehicles. The jump starter provides immediate starting capability in emergencies, while the Everstart charger offers the proper maintenance charging needed for long-term battery health.

Competitive Comparison: How It Stacks Up

Having tried several chargers over the years, I can offer some perspective on how the Everstart Maxx 4 Amp compares to alternatives in the market:

vs. Basic Trickle Chargers (1-2 Amp)

• Faster charging time than typical trickle chargers
• More features and safety protections
• Similar price point but greater versatility
• Better suited for regular-sized automotive batteries

vs. Higher-Amperage Chargers (10+ Amp)

• Slower charging, but gentler on batteries
• Typically more compact and portable
• Lower price point
• Less electrical demand from household circuits

vs. “Smart” Chargers from Premium Brands

• Similar functionality at a lower price point
• Comparable safety features
• May lack some diagnostic capabilities of premium models
• Fewer charging modes but covers the essential ones

vs. Combination Charger/Jump Starters

• More affordable and focused on a single function
• Generally more reliable for long-term maintenance charging
• Lacks emergency starting capability
• Smaller and easier to store

For my needs—primarily maintenance charging and occasional recovery of discharged batteries—the Everstart Maxx 4 Amp hits the sweet spot of functionality, reliability, and value. It lacks some of the bells and whistles of premium models costing 3-4 times as much, but it delivers on all the essential functions without compromise.

The primary scenarios where I might recommend a different charger would be for professional mechanics needing advanced diagnostics, or for users who frequently need to recover deeply discharged batteries quickly, where a higher-amperage unit might be more appropriate.

Warranty and Support: What to Expect

The Everstart Maxx 4 Amp Battery Charger comes with a one-year limited warranty, which is fairly standard for products in this category and price range. This warranty covers defects in materials and workmanship under normal use conditions.

My experience with warranty service has been limited—a testament to the charger’s reliability, as I haven’t needed to make a claim. However, I did have a question about the AGM setting early in my ownership, and I found the support through Walmart’s customer service to be responsive and knowledgeable.

For warranty claims, you’ll typically need to return the charger to your place of purchase with the original receipt. Walmart generally has a straightforward return process, which adds another layer of purchase confidence.

Beyond the formal warranty period, I’ve found these chargers to be quite durable. A friend has been using the same model for over five years with no issues, suggesting that with proper care, you can expect service well beyond the warranty period.

Speaking of proper care, I recommend:

• Storing the charger in a clean, dry environment
• Avoiding extreme temperatures when not in use
• Periodically checking cables for wear or damage
• Keeping the vents clear of dust and debris

These simple maintenance steps can help ensure years of reliable operation.

Portability Considerations: Taking It on the Go

The Everstart Maxx 4 Amp charger strikes a good balance between functionality and portability. Weighing approximately 2 pounds and measuring roughly 8″ x 4″ x 3″, it’s compact enough to store in a vehicle or carry to different locations without difficulty.

I regularly transport mine between vehicles in different locations, and its size has never been an issue. It easily fits in a trunk storage compartment, under a seat, or in a garage cabinet when not in use.

The built-in handle, while basic, provides a convenient carrying point. The cable management system—simple channels molded into the housing where you can wrap the cables—keeps everything organized during transport and storage.

One portability consideration worth noting: this charger requires standard 120V AC power. It’s not designed for use with 12V DC power sources like vehicle power outlets. For truly off-grid charging needs, you would need either a portable power station with an AC outlet or a different charger designed specifically for DC-to-DC charging.

For my camping trips where I might need to maintain a battery away from standard power, I typically bring a small power inverter that can connect to another vehicle or a portable power station. This combination has served me well for keeping batteries maintained during extended outdoor adventures.

Lithium Battery Compatibility: Important Limitations

As electric vehicles and lithium-based systems become more common, I’m increasingly asked whether this charger works with lithium-ion batteries. The straightforward answer is no—the Everstart Maxx 4 Amp Battery Charger is not designed for lithium-ion batteries and should not be used with them.

Lithium-ion batteries require specific charging profiles, voltages, and safety protocols that differ significantly from lead-acid chemistry. Using a lead-acid charger on a lithium battery can potentially damage the battery or create safety hazards.

This charger is specifically designed for:

• Conventional lead-acid batteries
• AGM (Absorbent Glass Mat) batteries
• Gel cell batteries
• Deep cycle lead-acid batteries
• Marine lead-acid batteries

If you need to charge lithium-ion batteries (like those found in electric vehicles, power tools, or some newer motorcycles), you’ll need a charger specifically designed for lithium chemistry. These typically cost more but include the necessary battery management systems and safety features required for lithium charging.

For most conventional vehicles, however, this limitation isn’t relevant, as the vast majority still use lead-acid or AGM batteries that are perfectly compatible with this charger.

Real User Experiences: Consolidated Reviews

Having recommended this charger to several friends and family members, I’ve collected quite a bit of feedback beyond my own experience. The consensus has been overwhelmingly positive, with a few consistent themes emerging:

Positive Feedback:

• Reliability during extended charging sessions
• Clear indicator lights that make operation intuitive
• Effective recovery of batteries that seemed “too far gone”
• Durability even when used in challenging garage environments
• Value for money compared to similar products

Occasional Criticisms:

• Charging speed (some users wished for faster charging)
• Cable length (some found the cables slightly short for certain applications)
• Limited display information compared to digital smart chargers
• Basic aesthetics (though this rarely affected satisfaction with performance)

My brother-in-law, who restores vintage motorcycles, particularly praised how the charger revived old batteries that had been sitting for years. My neighbor, who is less mechanically inclined, appreciated the simplicity and safety features that gave her confidence to maintain her vehicle’s battery without assistance.

From my perspective, the most telling endorsement is that I’ve yet to have anyone express regret about their purchase or report a failure during normal use. For a product in this price range, that level of consistent satisfaction is remarkable.

Troubleshooting Common Issues: Quick Fixes

Even the most reliable tools occasionally encounter issues. Based on my experience and the collective wisdom of other users, here are solutions to the most common problems you might encounter:

Charger Won’t Turn On:

• Verify the power outlet is functioning by testing with another device
• Check for tripped circuit breakers or GFCI outlets that may need resetting
• Inspect the power cord for damage
• Ensure the charger is not in thermal protection mode (let it cool down if it feels warm)

Error Light Illuminated:

• Check for reverse polarity connection (positive to negative)
• Verify that the clamps have good contact with battery terminals
• Clean battery terminals if they’re corroded
• Ensure the battery voltage is within the charger’s operating range (typically 3-15 volts)

Charging Seems Too Slow:

• Remember that the 4-amp rating means it will take time, especially for larger batteries
• Check for parasitic draws (disconnect the battery from the vehicle if possible)
• Verify the battery isn’t damaged or sulfated, which can reduce charging efficiency
• Ensure you’re using the correct mode for your battery type

Charger Cycles Between Charging and Complete:

• This may indicate a battery that can’t hold charge properly
• Could also suggest a parasitic draw in the vehicle’s electrical system
• Try charging the battery disconnected from the vehicle to isolate the issue
• Consider having the battery tested professionally if this persists

Overheating Concerns:

• Ensure the charger has adequate ventilation
• Check that the cooling vents aren’t blocked by dust or debris
• Avoid using the charger in extremely hot environments
• If persistent, it could indicate an internal issue requiring warranty service

Most issues I’ve encountered have been resolved through these basic troubleshooting steps. If problems persist, reaching out to Everstart customer support or returning the unit under warranty is typically the best course of action.

Trickle Charging Capabilities: Long-Term Storage Solution

One feature I’ve come to rely on heavily is the charger’s trickle charge mode, which activates automatically once the battery reaches full charge. This feature is invaluable for vehicles that sit for extended periods, such as seasonal vehicles, classic cars, or equipment used only occasionally.

When the battery reaches full charge (indicated by the green “Charged/Maintaining” LED), the charger switches to a maintenance mode where it monitors the battery’s voltage and provides small amounts of current only when needed to maintain optimal charge. This prevents both overcharging and self-discharge, keeping the battery in ideal condition without constant attention.

I use this feature extensively for:

• My motorcycle during winter storage
• My lawn tractor during the off-season
• My boat during the months it’s out of the water
• A classic car that only gets driven occasionally

The key advantage of this maintenance mode is that it prevents the sulfation that typically occurs when lead-acid batteries sit in a partially discharged state for extended periods. Sulfation—the formation of lead sulfate crystals on the battery plates—is one of the primary causes of premature battery failure, and preventing it can significantly extend battery life.

I’ve left batteries on maintenance charge for up to three months continuously without issues, though I do periodically check the connections and battery condition during these extended periods. For very long-term storage (6+ months), I typically check the setup monthly just to ensure everything remains in good order.

Long-Term Maintenance: Keeping Your Charger in Top Condition

Like any tool, the Everstart Maxx 4 Amp Battery Charger benefits from proper care and maintenance. After two years of regular use, mine continues to perform like new, which I attribute to some basic maintenance practices:

Cable Care:

• Inspect cables regularly for cuts, cracks, or abrasions
• Never carry the charger by the cables
• Avoid sharp bends or kinks when storing cables
• Use the built-in cable management system rather than tightly wrapping cables

Clamp Maintenance:

• Clean the clamps periodically with a wire brush if they show signs of corrosion
• Check that the spring tension remains adequate for secure connections
• Ensure the insulation around the clamp handles remains intact
• A light coating of dielectric grease can prevent corrosion on the clamp connectors

Housing Care:

• Wipe down the housing with a damp cloth if it gets dirty
• Ensure ventilation slots remain clear of dust and debris
• Avoid exposure to excessive moisture or extreme temperatures
• Check that all mounting points and screws remain secure

Electrical Maintenance:

• Inspect the power cord regularly for damage
• If the charger is stored in a humid environment, run it occasionally to prevent internal moisture buildup
• If you notice any unusual smells, sounds, or operation, discontinue use immediately

Following these simple practices has kept my charger functioning flawlessly. Given its solid construction and relatively simple electronics, with proper care, I expect it to provide many more years of reliable service before requiring replacement.

Final Thoughts: Is This the Right Charger for You?

After two years of regular use across multiple vehicles and countless charging cycles, I can confidently say that the Everstart Maxx 4 Amp Battery Charger has earned its place in my essential tools collection. Its balance of functionality, safety, ease of use, and value makes it an excellent choice for the average vehicle owner.

It’s particularly well-suited for:

• Everyday vehicle owners who want to maintain their batteries
• People with multiple vehicles or seasonal equipment
• Those looking for set-it-and-forget-it convenience
• Budget-conscious shoppers who don’t want to compromise on essential features

It may be less ideal for:

• Professional mechanics needing very rapid charging
• Those requiring advanced diagnostic capabilities
• Users with lithium-ion battery systems
• People who need portable charging without access to AC power

For me, the defining feature has been reliability. When I connect this charger, I have complete confidence that it will perform as expected, protecting my battery while restoring and maintaining its charge. That peace of mind, combined with the extended battery life I’ve experienced, makes this modest investment one of the most valuable in my garage.

If you’re looking for an affordable, dependable way to maintain your vehicles’ batteries and extend their useful life, the Everstart Maxx 4 Amp Battery Charger deserves serious consideration. It’s transformed how I approach battery maintenance, eliminating the anxiety of unexpected dead batteries and saving me money on premature replacements.

Remember, the best battery charger is the one you’ll actually use regularly. The Everstart Maxx 4 Amp’s combination of simplicity and effectiveness makes it easy to incorporate into your regular maintenance routine—and your batteries will thank you with years of reliable service.