How to Charge a Everstart Jump Starter Quick and Easy Guide

Charging your Everstart jump starter is simple and fast when you use the correct 12V DC or 120V AC charger included with the unit. Always connect the charger to the jump starter’s input port first, then plug it into a power source—avoid overcharging by unplugging once the LED indicator shows a full charge. For optimal performance, recharge every 3–6 months, even during storage, to maintain battery health and readiness.

Key Takeaways

• Use the correct charger: Always use the manufacturer-provided charger for safety and efficiency.
• Check power levels: Monitor the LED indicators to track charging progress and battery status.
• Charge fully before first use: Ensure maximum capacity by charging 12+ hours initially.
• Store properly when not in use: Recharge every 3-6 months to maintain battery health.
• Avoid extreme temperatures: Charge in a cool, dry place to prevent damage.
• Inspect cables and ports: Regularly check for wear or debris to ensure reliable connections.

Understanding Your Everstart Jump Starter

Imagine this: It’s early morning, the sun hasn’t fully risen, and you’re about to leave for work. You hop into your car, turn the key, and—nothing. Just a dull click. Your battery is dead. Now, instead of calling for help or waiting for a neighbor, you reach for your trusty Everstart jump starter. But wait… is it charged? If it’s not, you’re back to square one. That’s why knowing how to charge a Everstart jump starter is essential—not just for emergencies, but for peace of mind.

Everstart jump starters are popular for their reliability, portability, and ease of use. Whether you own the compact Everstart 1200A or the beefier Everstart Maxx 3000A, keeping it charged ensures you’re always ready. But here’s the thing: charging it isn’t always as straightforward as plugging in a phone. There are nuances—charging methods, safety tips, indicators, and maintenance tricks—that can make or break your experience. This guide walks you through everything step by step, so you never get stranded again.

Why Proper Charging Matters (And What Happens If You Don’t)

You wouldn’t drink spoiled milk, so why use a poorly charged jump starter? A dead or undercharged unit might seem like a minor inconvenience, but in an emergency, it can be a real problem. Think of your jump starter as a lifeline—it needs to be ready when you need it most.

Risks of an Undercharged or Overcharged Unit

• Undercharged jump starters may not deliver enough power to start your vehicle. For example, a 12V battery requires at least 10–12 volts to crank properly. If your Everstart is below 10V, it might only produce a weak spark—or worse, nothing at all.
• Overcharging can damage internal lithium-ion or lead-acid batteries. Excessive voltage leads to heat buildup, swelling, and reduced lifespan. Some models have built-in protection, but relying on them constantly isn’t smart.
• Deep discharge (letting the battery drain completely) harms long-term performance. Lithium-based Everstart units especially suffer from this. After a few deep discharges, capacity drops significantly.

One time, I left my jump starter in my car trunk all winter. By spring, it wouldn’t turn on—even after charging. Turns out, freezing temps combined with a low charge caused irreversible damage. Lesson learned: treat your jump starter like a smartphone. Keep it charged between 40% and 80% for optimal health.

How Often Should You Charge It?

Even if you don’t use your Everstart, charge it every 3–6 months. Batteries self-discharge over time. Here’s a quick rule of thumb:

• Newer models (lithium-ion): Lose about 1–2% per month. Charge every 4–6 months.
• Older models (lead-acid or sealed AGM): Lose 3–5% per month. Charge every 3 months.

Pro tip: Set a reminder on your phone. I use Google Calendar with a recurring alert: “Check Everstart charge – every 5 months.” Simple, effective, and keeps my tool ready.

Step-by-Step: How to Charge a Everstart Jump Starter

Now let’s get into the nitty-gritty. Charging your Everstart isn’t complicated, but doing it right makes all the difference. Follow these steps carefully, and you’ll avoid common pitfalls.

Step 1: Check the Current Charge Level

Before plugging anything in, check the battery status. Most Everstart models have an LED indicator:

• 1 light = 25% charged
• 2 lights = 50% charged
• 3 lights = 75% charged
• 4 lights = 100% charged

Press the “Power” or “Check” button on the device. If only one light comes on, it’s time to recharge. Don’t wait until it’s completely dead.

Tip: On older models without indicators, use a multimeter. Set it to DC voltage and touch the probes to the jump starter’s clamps (red to positive, black to negative). A fully charged 12V unit reads 12.6V or higher.

Step 2: Choose the Right Charging Method

Everstart jump starters come with different charging options. The method depends on your model. Here’s how to identify yours:

Method A: Wall Charger (Most Common)
Use the included AC adapter. Plug it into a standard wall outlet (120V). Connect the other end to the jump starter’s charging port (usually labeled “DC IN” or “Charge”).

• Charging time: 3–6 hours (varies by model and battery level)
• Best for: Home use, regular maintenance

Method B: 12V Car Socket (Cigarette Lighter)
Use the included 12V DC cable. Plug it into your car’s cigarette lighter while the engine is running. Never charge from a dead or off car battery!

• Charging time: 6–12 hours (slower due to lower current)
• Best for: Road trips, remote locations

Caution: Not all cars provide stable voltage when idling. If your car’s electrical system is weak, skip this method.

Method C: USB Charging (For Compact Models)
Some smaller Everstart units (like the 1200A) support USB-C charging. Use a 5V/2A or higher USB adapter.

• Charging time: 4–8 hours
• Best for: Urban users, minimalists

Note: USB charging is slower and not suitable for high-capacity models (e.g., 2000A+).

Step 3: Connect and Monitor the Charging Process

Once connected, here’s what to do:

• Place the jump starter on a flat, non-flammable surface. Never leave it on a bed, couch, or near flammable materials.
• Ensure good ventilation. Lithium batteries generate heat during charging. Avoid enclosed spaces.
• Watch the LED lights. As charging progresses, more lights will illuminate. When all lights stay on (or blink slowly), it’s fully charged.
• Unplug when done. Overcharging isn’t usually an issue with modern units, but it’s still smart to unplug after full charge.

Real-life example: My neighbor once left his jump starter charging overnight. The next morning, the unit was warm and the charger smelled hot. Turns out, the wall outlet was loose, causing arcing. Always check connections!

Step 4: Test the Charged Unit

After charging, test the jump starter:

1. Press the power button. All lights should turn on.
2. Attach the clamps to a working car battery (red to +, black to -).
3. Turn on the jump starter. You should hear a relay click.
4. Try starting the car (if safe to do so).

If it powers on but won’t start the car, the issue might be with the clamps or cables—not the charge level.

Charging Tips and Best Practices

Charging isn’t just about plugging in. Smart habits extend your Everstart’s lifespan and ensure reliability.

Use the Right Charger and Cables

Everstart includes specific chargers for each model. Never use third-party adapters unless they match the voltage and current ratings. Using a 9V charger on a 12V unit will undercharge it. Using a 15V charger can fry the battery.

Check the label on your Everstart for specs:

• Input voltage: Usually 12–18V DC or 100–240V AC
• Charging current: Typically 1–3A

If you lose the original charger, contact Walmart (Everstart’s manufacturer) for a replacement. Don’t gamble with knockoffs.

Charge in the Right Environment

Temperature matters. Lithium batteries don’t like extreme heat or cold.

• Ideal charging temperature: 50°F to 86°F (10°C to 30°C)
• Avoid charging below 32°F (0°C) or above 104°F (40°C)

If your garage is freezing in winter, charge indoors. In summer, avoid leaving it in a hot car. I once tried charging mine in a 110°F trunk. The unit shut off automatically—thank goodness for safety features!

Don’t Leave It Connected for Weeks

Some people think “trickle charging” is good. It’s not. Even with smart chargers, prolonged connection can cause:

• Heat buildup
• Battery degradation
• Reduced cycle life

Charge until full, then unplug. Store in a cool, dry place. If you’re storing it long-term, charge to 50% before putting it away.

Clean the Ports and Clamps

Over time, dust and corrosion can interfere with charging. Every few months:

• Wipe the charging port with a dry cotton swab.
• Clean the clamps with a wire brush or vinegar-soaked cloth (for rust).
• Apply dielectric grease to the clamps to prevent future corrosion.

This simple habit ensures strong electrical contact and faster charging.

Troubleshooting Common Charging Issues

Even with care, problems happen. Here’s how to solve the most common charging headaches.

Jump Starter Won’t Turn On After Charging

Possible causes:

• Deep discharge: The battery is below the safe threshold (usually 2–3V). Try charging for 24 hours with the original charger.
• Faulty charger: Test with a different AC outlet or borrow a friend’s charger.
• Internal damage: If it was dropped or exposed to water, the battery may be dead. Contact support.

Quick fix: Some Everstart models have a “reset” function. Hold the power button for 10–15 seconds. If lights flash, it’s resetting.

Charging Takes Too Long (Or Never Reaches 100%)

This usually means:

• Low-quality charger: Third-party adapters often lack proper voltage regulation.
• Damaged cable: Frayed wires reduce current flow. Replace the cable.
• Aging battery: After 3–5 years, capacity drops. A jump starter that took 4 hours to charge now takes 8.

Test: Use a multimeter to check voltage at the charging port. If it’s below 12V, the charger is weak.

Unit Gets Hot While Charging

A little warmth is normal. But if it’s hot to the touch, disconnect immediately. Causes include:

• Overvoltage charger
• Internal short circuit
• Faulty thermal management system

Stop using it and contact Walmart’s customer service. Do not attempt repairs yourself.

LED Lights Don’t Come On

If the lights stay off when you press the check button:

• Check the power button. Some models need a long press (3+ seconds).
• Inspect the battery. If the unit is old or has been stored for years, the battery might be dead.
• Look for physical damage. Cracked casing? Water stains? Time to replace.

Everstart offers a 1-year warranty. Keep your receipt and packaging for claims.

Comparison: Charging Methods for Different Everstart Models

Not all Everstart jump starters are the same. Here’s a breakdown of charging options across popular models. Use this table to find the best method for your unit.

Model	Battery Type	Capacity (mAh)	Wall Charger	12V Car Charger	USB Charging	Charging Time
Everstart 1200A	Lithium-ion	18,000	Yes (included)	Yes (included)	Yes (USB-C)	3–5 hours
Everstart 1600A	Lithium-ion	22,000	Yes	Yes	No	4–6 hours
Everstart Maxx 2000A	Lithium-ion	30,000	Yes	Yes	No	5–7 hours
Everstart Maxx 3000A	Lithium-ion	40,000	Yes	Yes	No	6–8 hours
Everstart 1000A (Lead-Acid)	Sealed AGM	12,000	Yes	Yes	No	8–10 hours

Key takeaways:

• Smaller models (1200A–1600A) offer more charging flexibility. USB is great for travel.
• Larger models (2000A+) require longer charging times. Plan ahead.
• Lead-acid models charge slower and need more maintenance (e.g., checking electrolyte levels).

Always refer to your user manual for model-specific details. If you can’t find it, download it from Walmart’s website using the model number (usually on the back).

Final Thoughts: Keep Your Everstart Ready

Knowing how to charge a Everstart jump starter isn’t just about following steps—it’s about building a routine that keeps you safe and prepared. Think of it like brushing your teeth: a small, consistent habit with big long-term benefits.

Here’s a quick recap of what we’ve covered:

• Charge every 3–6 months, even if you don’t use it.
• Use the right charger and avoid extreme temperatures.
• Monitor the charging process and unplug when full.
• Test the unit after charging to ensure it works.
• Troubleshoot issues early—don’t wait until you’re stranded.

I’ve had my Everstart for over three years. It’s saved me twice—once during a snowstorm and once when my alternator failed on a road trip. Both times, it started my car on the first try. That reliability comes from proper care and charging.

Remember: your jump starter is only as good as its charge. Treat it with respect, charge it smartly, and it will return the favor when you need it most. Stay safe, stay charged, and never let a dead battery ruin your day.

Frequently Asked Questions

How do I charge an Everstart jump starter for the first time?

To charge your Everstart jump starter initially, plug the included AC adapter into a wall outlet and connect the other end to the jump starter’s input port. Allow it to charge fully (indicated by a solid LED light), which typically takes 12–24 hours for first-time use. Avoid using the device while charging to ensure optimal battery performance.

What type of charger does an Everstart jump starter use?

Most Everstart jump starters use a standard 120V AC wall charger or a 12V DC car charger (included with purchase). Always use the manufacturer-provided charger to prevent damage, as third-party chargers may not match the required voltage or amperage.

How long does it take to fully charge an Everstart jump starter?

Charging time varies by model but generally takes 3–6 hours for a full charge using the AC adapter. Larger capacity models may require up to 24 hours. Check the LED indicator on the device—a solid green or blue light usually signals a complete charge.

Can I charge my Everstart jump starter while using it to power devices?

It’s not recommended to use the jump starter’s power output functions (like USB ports or jump-starting) while charging. Doing so can strain the battery and prolong charging time. Always prioritize one function at a time for safety and efficiency.

Why isn’t my Everstart jump starter holding a charge?

If your Everstart jump starter won’t hold a charge, ensure the charger is properly connected and the outlet is functional. Over time, lithium-ion batteries degrade—if the issue persists after 1–2 years, the battery may need replacement. Contact Everstart support for warranty options.

How often should I recharge my Everstart jump starter when not in use?

Recharge your Everstart jump starter every 3–6 months during storage to maintain battery health. Even when unused, lithium-ion batteries slowly discharge. Store it in a cool, dry place and check the charge level periodically to avoid deep discharge.