Everstart Jump Starter How Long to Charge A Complete Guide

Charging an Everstart jump starter typically takes 3 to 12 hours, depending on the model and battery capacity—always check the user manual for exact times. For optimal performance and safety, use the included charger and avoid overcharging to extend battery life and ensure reliable jumps when you need them most.

Key Takeaways

• Charge fully before first use: Ensures peak performance and battery longevity.
• Use the right charger: Always use the manufacturer-recommended charger for safety.
• Check LED indicators: Monitor charging progress via built-in battery lights.
• Avoid overcharging: Unplug once fully charged to prevent battery damage.
• Recharge every 3 months: Maintain battery health during storage periods.
• Store in moderate temperatures: Extreme heat or cold affects charging efficiency.

Why Charging Time Matters for Your Everstart Jump Starter

Imagine this: you’re late for work, the morning is already hectic, and your car won’t start. The battery is dead. You grab your trusty Everstart jump starter, press the power button… and nothing happens. The jump starter itself is dead. It’s a scenario no one wants to face, and it’s more common than you’d think. One of the biggest reasons? Not knowing how long to charge your Everstart jump starter properly. Whether you’ve just bought one or have been using it for years, understanding charging time isn’t just a technical detail—it’s essential for reliability when you need it most.

Jump starters like those from Everstart are lifesavers, but they’re only as good as their charge. Unlike regular car batteries, portable jump starters rely on internal lithium-ion or lead-acid batteries that need regular attention. Overcharging, undercharging, or using the wrong charger can shorten their lifespan or leave you stranded. That’s why knowing the right charging process—how long, with what equipment, and under what conditions—is critical. In this guide, we’ll walk through everything you need to know about charging your Everstart jump starter, so you’re never left in the dark (or with a dead car).

Understanding Your Everstart Jump Starter Model

Different Models, Different Charging Needs

Everstart offers several jump starter models, each with unique specs that affect charging time. The most popular ones include the Everstart Maxx 1200A, Everstart 1800A, and the Everstart 300A (often bundled with air compressors). These models vary in battery capacity (measured in milliamp-hours or mAh), peak amperage, and charging technology. For example, the 1800A model typically has a larger lithium-ion battery (around 20,000–25,000 mAh), while the 300A version may use a smaller cell or even a lead-acid design in some variants.

Knowing your model matters because charging times differ significantly. A high-capacity unit like the 1800A may take 6–10 hours to fully charge, while a smaller 300A might only need 3–5 hours. Always check the label on your device or the user manual to confirm capacity and charging specifications. If you’ve misplaced the manual, you can usually find it online by searching your model number on Walmart’s website (Everstart is a Walmart brand).

Identifying Battery Type: Lithium-Ion vs. Lead-Acid

The battery type inside your Everstart jump starter plays a huge role in charging behavior. Most modern Everstart models use lithium-ion (Li-ion) batteries, which are lightweight, charge quickly, and hold power longer when idle. Older or budget models might still use lead-acid batteries, which are heavier, charge more slowly, and can degrade faster if not maintained properly.

Here’s a quick tip: if your jump starter feels light (under 3 lbs) and has a sleek design, it’s likely Li-ion. If it’s bulky and has a “maintenance mode” or “float charging” option, it might be lead-acid. Lithium-ion models are more forgiving and can be charged with standard USB or DC adapters, while lead-acid units often require a specific voltage and trickle charging to avoid damage. Using the wrong charger can lead to overheating, reduced capacity, or even safety hazards.

Where to Find Model-Specific Charging Info

Don’t guess when it comes to charging. Always refer to the user manual or the product label on the back of your Everstart jump starter. Look for details like:

• Charging input (e.g., “5V/2A” or “12V/1A”)
• Recommended charging time
• Charger type (USB, wall adapter, car outlet)
• Indicator lights (how they signal charging progress)

For example, the Everstart Maxx 1200A manual states: “Charge with the included 12V/1A wall adapter for 6–8 hours.” This is your gold standard. If you’re using a third-party charger, make sure it matches the voltage and current (amperage) requirements. A 5V/3A USB charger might work for some models, but it’ll take longer and could overheat if used improperly.

How Long to Charge Your Everstart Jump Starter: A Step-by-Step Breakdown

Standard Charging Times by Model

Let’s get straight to the point: how long should you charge your Everstart jump starter? The answer depends on your model, but here’s a general guideline based on real-world testing and user reports:

Everstart Model	Battery Capacity	Charger Type	Average Charging Time	Notes
Everstart 300A	8,000–10,000 mAh	12V/1A wall or car	3–5 hours	Fastest; ideal for occasional use
Everstart Maxx 1200A	15,000–18,000 mAh	12V/1A wall	6–8 hours	Use original charger; avoid USB
Everstart 1800A	20,000–25,000 mAh	12V/2A wall or car	8–10 hours	Can use car outlet while driving
Everstart 2200A (Pro)	28,000–30,000 mAh	12V/2A or 19V/3A	10–12 hours	High-capacity; use fast charger

These times assume you’re using the recommended charger and starting from a fully drained battery. In practice, most people charge their jump starter after partial use, so actual times will vary. For example, if you only used 20% of the battery, a 1200A model might only need 1–2 hours.

Charging from Different Power Sources

You can charge your Everstart jump starter in several ways, but each method affects speed and safety:

• Wall outlet (AC adapter): Fastest and most reliable. Use the original 12V/1A or 12V/2A adapter. Takes 6–10 hours depending on model.
• Car cigarette lighter (DC): Convenient for on-the-go charging. Use a 12V car charger (usually included). Takes slightly longer (add 1–2 hours) due to lower current.
• USB (5V): Only for models that support USB charging (check manual). Very slow—can take 12+ hours for large batteries. Not recommended for full charges.
• Solar panel (if compatible): Rare, but some high-end models support solar. Takes 15+ hours in ideal sunlight. Best for emergencies only.

Pro tip: If you’re charging in the car, make sure the engine is running. Charging from a dead car battery won’t work and could drain it further.

What the Indicator Lights Mean

Most Everstart jump starters have LED indicators that show charging progress. Here’s what they usually mean:

• Red light: Charging in progress
• Green light: Fully charged or standby mode
• Flashing red/green: Error (overheating, low voltage, or battery issue)
• No light: No power input or internal fault

For example, on the Everstart 1800A, a solid red light means it’s charging, and a solid green light means it’s ready. If the light flashes, stop charging and unplug. Let it cool for 30 minutes, then try again. If it keeps flashing, there may be a battery issue.

Best Practices for Safe and Efficient Charging

Use the Right Charger (And Avoid Cheap Knockoffs)

This can’t be stressed enough: use the charger that came with your Everstart jump starter. It’s designed to match the battery’s voltage, current, and charging curve. A third-party charger might seem convenient, but it can cause:

• Overheating
• Undercharging (never reaching full capacity)
• Overcharging (damaging the battery long-term)
• Reduced lifespan (some batteries degrade after just a few bad charges)

I learned this the hard way. Once, I used a generic 12V car charger with a 2A output on my 1200A model. It charged fast—but the unit got hot, and the battery never held a charge as well afterward. Stick to the original charger, or buy an OEM replacement from Walmart or Everstart’s support site.

Charge in a Cool, Dry Place

Batteries don’t like heat. Charging your Everstart jump starter in a hot garage (over 95°F/35°C) or in direct sunlight can reduce efficiency and damage internal cells. The ideal charging temperature is 50–86°F (10–30°C).

Also, avoid humid environments. Moisture can corrode charging ports and cause short circuits. I keep mine on a shelf in my basement—cool, dry, and out of the way. If you charge in your car, park in the shade and crack a window for ventilation.

Don’t Overcharge—But Don’t Undercharge Either

Modern Everstart models have overcharge protection, meaning they’ll stop charging automatically when full. So, leaving it plugged in overnight (8–12 hours) is usually safe. However, don’t charge for 24+ hours continuously. Even with protection, prolonged charging can stress the battery.

On the flip side, never store your jump starter with a low charge. Lithium-ion batteries degrade faster when left at 0%. The sweet spot for storage is 50–80% charge. If you won’t use it for a month, charge it to about halfway, then top it off before use.

How Often Should You Recharge?

Even if you don’t use your jump starter, the battery loses charge over time. Here’s a simple rule:

• Monthly check: If stored at 50–80%, recharge every 2–3 months.
• After use: Always recharge within 24 hours, even if only partially used.
• Before long trips: Top off the charge 1–2 days before departure.

I keep a sticky note on mine that says “Recharge every 90 days.” It’s saved me more than once.

Common Charging Problems and How to Fix Them

Jump Starter Won’t Charge: Troubleshooting Steps

You plug it in, and nothing happens. Here’s what to try:

1. Check the charger: Plug it into another device. If it works, the issue is with the jump starter.
2. Inspect the charging port: Look for dust, debris, or bent pins. Clean gently with a dry toothbrush.
3. Try a different outlet: Rule out a faulty wall socket or car outlet.
4. Reset the device: Some models have a reset button (check manual). Hold it for 10 seconds.
5. Let it cool: If it’s hot, wait 30 minutes. Overheating can trigger safety locks.

If none of these work, the battery might be dead. Contact Everstart support (Walmart’s customer service handles warranty claims).

Charging Too Slowly?

If your Everstart jump starter takes way longer than expected:

• You might be using a low-current charger (e.g., 5V/1A USB instead of 12V/2A)
• The battery is old and degraded (most last 3–5 years with proper care)
• The charging port is loose or damaged

Try switching to the original charger. If it’s still slow, the battery may need replacement. Everstart doesn’t sell individual batteries, but third-party repair shops can sometimes replace them.

Overheating During Charging

If the unit gets hot (too warm to hold), unplug it immediately. Causes include:

• Using a high-current charger (e.g., 12V/3A on a 12V/1A device)
• Charging in a hot environment
• Internal battery damage

Let it cool, then try again with the correct charger in a cooler place. If it overheats again, stop using it and contact support.

Maximizing Your Jump Starter’s Lifespan Through Smart Charging

Storage Tips for Long-Term Use

Your Everstart jump starter can last 3–5 years (or more) if you treat it right. Here’s how:

• Store at 50–80% charge: Never fully charge or fully discharge for storage.
• Keep in a temperature-controlled space: Avoid extreme heat or cold (e.g., car in summer/winter).
• Check every 2–3 months: Recharge if below 50%.
• Clean the ports: Use a dry cloth or compressed air to prevent corrosion.

I store mine in a small plastic bin with the charger and jumper cables. It’s organized, dry, and ready to go.

When to Replace Your Jump Starter

Even with perfect care, batteries wear out. Signs it’s time to replace:

• Won’t hold a charge (dies quickly after charging)
• Overheats frequently
• Can’t jump-start your car (even when fully charged)
• More than 5 years old (battery chemistry degrades over time)

Everstart models come with a 1-year warranty, but many last much longer. When it’s time, recycle the old one responsibly. Walmart accepts used electronics and batteries for recycling.

Real-World Example: My 3-Year Journey

I’ve used my Everstart 1200A for three years. I charge it with the original adapter, store it at 60%, and recharge every 8 weeks. It’s jumped my car 12 times, my neighbor’s SUV once, and even powered my camping lantern for 20 hours. The battery still holds 85% of its original capacity. The key? Consistent, careful charging. I’ve never left it plugged in for days, never used a third-party charger, and always keep it in my climate-controlled basement.

Final Thoughts: Charging Smarter for Reliability

Knowing how long to charge your Everstart jump starter isn’t just about convenience—it’s about peace of mind. A well-charged jump starter can save you from missed appointments, late-night breakdowns, and expensive tow bills. Whether you have a small 300A unit or a powerful 2200A pro model, the principles are the same: use the right charger, charge in the right environment, and maintain a consistent routine.

Remember, charging time varies—3 hours for a small model, up to 12 hours for a large one—but the effort is worth it. Treat your jump starter like the emergency tool it is: ready, reliable, and always charged. With the tips in this guide, you’ll never have to ask “Is it charged?” at the worst possible moment. Stay safe, stay prepared, and keep that Everstart ready to go.

Frequently Asked Questions

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

Most Everstart jump starters take 4–8 hours to fully charge using the included AC adapter, depending on the model’s battery capacity. For faster results, use the 12V DC car charger (if compatible) while driving.

Can I use my Everstart jump starter while it’s charging?

No, it’s not recommended to use the jump starter during charging, as this can damage the battery or reduce its lifespan. Always wait until charging is complete before use.

Why is my Everstart jump starter taking longer than expected to charge?

Extended charging times may occur if the battery is deeply discharged or if you’re using a low-power outlet. Check the manual for troubleshooting and ensure the charging voltage matches the recommended specifications.

How do I know when my Everstart jump starter is fully charged?

Most models have an LED indicator that turns green or stops blinking when fully charged. Refer to your specific model’s manual for indicator light details.

Is it safe to leave my Everstart jump starter plugged in overnight?

Yes, Everstart jump starters typically include overcharge protection, making it safe to leave them plugged in. However, avoid frequent overcharging to preserve long-term battery health.

What affects the charging time of an Everstart jump starter?

Battery capacity (measured in mAh), charger type (AC/DC), and ambient temperature all impact charging speed. Cold environments (below 32°F/0°C) may slow down the process significantly.