Everstart Maxx 1200A Jump Starter How to Charge Guide

Charge your Everstart Maxx 1200A jump starter properly to ensure peak performance and long-term reliability. Use the included AC adapter or 12V DC car charger, connecting to the input port and allowing 12–16 hours for a full charge—never overcharge. Always store it at 50% charge or higher when not in use for extended periods to maximize battery life.

Key Takeaways

• Use the included charger: Always charge with the provided 12V DC or AC charger for optimal safety and performance.
• Charge after each use: Recharge immediately after jump-starting to maintain battery health and readiness.
• Check LED indicators: Monitor charging status via LED lights—solid green means fully charged.
• Avoid overcharging: Unplug once fully charged to prevent damage and extend device lifespan.
• Store properly: Keep in a cool, dry place and recharge every 3 months if unused.
• Ensure clean connections: Wipe terminals before charging to maintain efficient power transfer.

Understanding Your Everstart Maxx 1200A Jump Starter

Ever been stranded with a dead car battery on a cold winter morning? I have, and it’s not fun. That’s when I discovered the Everstart Maxx 1200A jump starter, a reliable companion that’s saved me more times than I can count. This portable powerhouse isn’t just a jump starter—it’s a multi-functional tool with USB ports, an air compressor, and even a built-in flashlight. But like any electronic device, it needs to be charged to stay ready for emergencies.

Charging your Everstart Maxx 1200A jump starter might seem straightforward, but there’s more to it than just plugging it in. Whether you’re a first-time owner or a seasoned user, understanding the nuances of charging can make a big difference in performance and longevity. In this guide, I’ll walk you through everything you need to know, from the basics to pro tips, so you never get caught off guard. Think of it as a friendly chat between two people who’ve both had their fair share of car troubles.

Why Proper Charging Matters

Before diving into the “how,” let’s talk about the “why.” A jump starter is only as good as its battery life. Overcharging, undercharging, or using the wrong charger can shorten its lifespan or leave you with a device that won’t hold a charge when you need it most. The Everstart Maxx 1200A uses a lithium-ion battery, which is sensitive to charging habits. Treat it right, and it’ll treat you right—like a loyal friend who always shows up on time.

What’s in the Box?

When you unbox your Everstart Maxx 1200A, you’ll typically find:

• The jump starter unit (with integrated battery)
• A set of smart jumper cables (with clamps)
• A 12V DC car charger
• A wall charger (AC adapter)
• A user manual (always keep this handy!)
• Optional: USB cables for charging phones/tablets

Both the car charger and wall charger are designed specifically for this device, which is great—but it also means you shouldn’t substitute with generic chargers. More on that later.

Step-by-Step: How to Charge Your Everstart Maxx 1200A

Using the Wall Charger (AC Power)

This is the most common method and my personal go-to. Here’s how it works:

1. Locate the charging port: On the side of the Everstart Maxx 1200A, you’ll find a small rubber flap. Gently lift it to reveal the DC charging port (it looks like a tiny barrel plug).
2. Plug in the wall charger: Insert the barrel end of the AC adapter into the port. The other end goes into a standard wall outlet.
3. Check the LED indicators: The jump starter has a row of 4 LED lights. When charging, they’ll blink sequentially (like a progress bar). Once all four are solid, it’s fully charged—usually takes 4-6 hours.

Pro tip: Charge it in a cool, dry place. Avoid direct sunlight or hot garages, as heat can degrade the battery over time.

Using the 12V Car Charger (DC Power)

Perfect for road trips or when you’re away from home. The process is similar:

1. Insert the car charger: Plug the 12V end into your car’s cigarette lighter socket (make sure the car is on or in “accessory” mode).
2. Connect to the jump starter: Use the same DC port as the wall charger.
3. Monitor the LEDs: The blinking pattern is identical. Charging time is roughly 5-7 hours, depending on your car’s alternator output.

Caution: Don’t leave the car charger plugged in overnight. While the Everstart Maxx 1200A has overcharge protection, it’s still safer to unplug once charged.

Charging While in Use (Multi-Tasking)

Here’s a neat feature: you can charge the jump starter while using other functions (like inflating tires or charging your phone). The USB ports and air compressor draw power from the internal battery, but the charging port works independently. Just plug in the charger, and the device will prioritize charging the battery first—then power the accessories.

Example: Need to charge your phone while recharging the jump starter? No problem. Plug in both the wall charger and your phone’s USB cable. The jump starter will charge itself first, then your phone once it’s topped off.

Charging Tips to Extend Battery Life

Avoid Extreme Temperatures

Lithium-ion batteries hate extremes. Charging in freezing cold or scorching heat can permanently reduce capacity. If your jump starter feels hot to the touch after use, let it cool for 30 minutes before charging. In winter, store it indoors (not in the car) and charge it in a room-temperature space.

Partial vs. Full Charges

Unlike older batteries, lithium-ion cells prefer partial charges. Here’s what I mean:

• For daily use: Top it up when it hits 20-30% (like your phone). This reduces stress on the battery.
• For storage: Charge to 50% before putting it away for months. Storing at 100% for long periods can degrade the battery.

Personal anecdote: I once left my jump starter fully charged for 6 months. When I tested it, the runtime was noticeably shorter. Lesson learned!

Use the Right Charger

The Everstart Maxx 1200A is designed for its included chargers. Using third-party adapters (even if they fit) can cause:

• Slow charging
• Overheating
• Battery damage (in rare cases)

If you lose the original charger, contact Everstart’s customer support for a replacement. Don’t risk it with a cheap knockoff.

Check the Cables

Over time, the charging cable’s barrel plug can wear out. If the connection feels loose or the LEDs flicker during charging, inspect the cable for fraying or bent pins. Replace it immediately—a bad connection can cause voltage spikes.

Troubleshooting Common Charging Issues

No LED Lights When Plugged In

First, check these:

• Is the outlet working? Plug in a lamp to test.
• Is the cable fully inserted? Push the barrel plug in until it clicks.
• Is the car’s 12V socket active? Turn the ignition to “accessory” mode.

If everything seems fine but no lights appear, the battery might be deeply discharged. Leave it plugged in for 2-3 hours. Lithium-ion batteries sometimes enter “sleep mode” when voltage drops too low. A slow trickle charge can revive them.

Charging Takes Forever

Normal charging time is 4-7 hours. If it’s taking longer:

• Test the charger: Try charging a different device with the same wall adapter.
• Check the battery health: After 3+ years, lithium-ion batteries lose capacity. If your jump starter won’t hold a charge for more than 1-2 months, it’s time for a replacement.
• Use a power strip: Some outlets have weak voltage. Plug directly into the wall.

Overheating During Charging

Some warmth is normal, but if the jump starter feels hot:

1. Unplug it immediately.
2. Move it to a cooler area.
3. Let it rest for 30 minutes.

Never charge a hot device—it’s a safety hazard. If overheating happens frequently, contact Everstart for a warranty replacement.

How Often Should You Charge It?

After Every Use

Even if you only used it for a quick jump or to charge your phone, top it up afterward. Lithium-ion batteries lose about 2-3% charge per day when idle. A fully charged jump starter can last 3-6 months, but why risk it?

For Long-Term Storage

If you won’t use it for months (e.g., storing it in a garage), follow this routine:

1. Charge to 50%.
2. Store in a cool, dry place.
3. Recharge to 50% every 6 months.

Why 50%? Lithium-ion batteries degrade fastest at 0% and 100%. 50% is the “sweet spot” for long-term storage.

Monthly Check-Ups

Even if you don’t use it, give it a quick charge every 30 days. This keeps the battery chemistry active and prevents deep discharge. Think of it like “exercising” the battery.

Data Table: Charging Specs at a Glance

Charging Method	Input Voltage	Charging Time	Best For
Wall Charger (AC)	100-240V AC	4-6 hours	Home use, daily charging
Car Charger (DC)	12V DC	5-7 hours	Road trips, emergencies
Partial Charging	Same as above	1-2 hours (to 50%)	Battery longevity

This table sums up the key specs. Notice the wall charger is faster—that’s because it delivers a higher current (typically 1.5-2A) compared to the car charger (1A max).

Conclusion: Keep It Ready, Keep It Reliable

Charging your Everstart Maxx 1200A jump starter isn’t rocket science, but it does require attention to detail. Treat it like the lifeline it is, and it’ll return the favor when you’re stranded on a dark road or rushing to an important meeting. Remember the golden rules:

• Use the original chargers.
• Avoid extreme temperatures.
• Charge after every use.
• Store at 50% for long periods.

I’ve learned these lessons the hard way—overheating, dead batteries, even a near-miss on a highway at night. Now, my Everstart Maxx 1200A is always ready, thanks to a simple charging routine. Whether you’re a weekend warrior or a daily commuter, this guide should give you the confidence to keep your jump starter in top shape.

At the end of the day, it’s not just about how to charge your Everstart Maxx 1200A—it’s about peace of mind. And that? That’s priceless.

Frequently Asked Questions

How do I charge the Everstart Maxx 1200A jump starter?

To charge your Everstart Maxx 1200A jump starter, use the included AC adapter and plug it into a standard wall outlet. The charging port is located on the side of the unit—connect the adapter, and the LED indicator will show the charging progress.

How long does it take to fully charge the Everstart Maxx 1200A?

The Everstart Maxx 1200A typically takes 4–6 hours to fully charge from zero, depending on the remaining battery level. Always monitor the LED indicators to confirm when charging is complete.

Can I use a car charger to charge the Everstart Maxx 1200A jump starter?

Yes, the Everstart Maxx 1200A includes a 12V car charger option, allowing you to charge it via your vehicle’s cigarette lighter socket. This is ideal for recharging while on the go or during travel.

What do the LED indicators mean when charging the Everstart Maxx 1200A?

The LED indicators display the battery level during charging: red means charging in progress, and green indicates a full charge. Some models may flash during charging—refer to the manual for specific patterns.

Is it safe to leave the Everstart Maxx 1200A charging overnight?

Yes, the Everstart Maxx 1200A features overcharge protection, making it safe to leave plugged in overnight. Once fully charged, the unit automatically stops charging to preserve battery life.

Why isn’t my Everstart Maxx 1200A jump starter holding a charge?

If your jump starter isn’t holding a charge, ensure the charging cable and port are clean and undamaged. If the issue persists, the internal battery may need replacement—contact customer support for assistance.