If your MacBook, Lenovo, HP, Dell, or similar laptop runs out of juice, but you’ve forgotten the charger, try these ways to recharge its battery without the original power adapter.
It’s easy to forget to take a laptop charger with you. Notebook batteries hold enough charge for a few hours of run time, so you should keep your laptop charged to do the work you need.
Follow along for alternative ways to charge your laptop without its original charger. We’ll also discuss whether it’s safe to recharge a laptop without its official charger in the first place.
Table of Contents
1. Charge Your Laptop Using a Power Bank
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2. Charge Your Laptop Using a Car Battery
3. Purchase a USB-C Power Delivery Charger
4. Invest in a Universal Power Adapter
5. Use a Super Battery for Your Laptop
6. Keep a Spare Battery for Emergencies
7. Use Your Computer’s USB Port for Charging
8. Buy an External Battery Charger
9. Use a Phone or Tablet to Charge Your Laptop
1. Charge Your Laptop Using a Power Bank
Much like how you’d charge your smartphone via a power bank when there’s no other way to recharge it, you can also use a power bank to charge your laptop.
Power bank is a great choice to charge up your Apple, Dell, Lenovo, or another laptop, as it outputs approximately 20 volts of power. As a rule of thumb, avoid power banks that put out only 5V, as most laptops need 8V-12V power. Choose ones that support laptop charging and USB-C (early generations of laptops with USB-C don’t support charging).
2. Charge Your Laptop Using a Car Battery
If you can’t manage a power bank, your car’s battery can charge your notebook without a charger, but you’ll need a power inverter to convert the DC power from your car to AC. Although you’ll need to leave the power inverter somewhere on the vehicle floor, you can still take your laptop inside and out—which is excellent for beginners.
3. Purchase a USB-C Power Delivery Charger
If you don’t have a power bank or can’t charge your laptop using a car battery, another good solution is a USB-C power adapter with multiple ports, sometimes referred to as a USB PD charger.Of course, these things must be plugged into power vs. being a power source by itself, like a power bank.
Choose a charger with the right mix of USB ports to support all your devices. USB-C has a smaller oval-shaped connector that’s reversible and designed to conduct much more power at higher speeds than the older USB-A port. This makes it an excellent alternative for charging your computer when you don’t have a charger. Furthermore, power adapters compatible with the USB Power Delivery protocol (USB PD) feature protections against overcharging, overheating, etc. As such, they’re among the safest methods to charge via USB-C.
4. Invest in a Universal Power Adapter
While it’s great to know that there’s another option to charge your laptop battery without needing the official charger, you’ll probably end up with a dead or failed battery if you set the voltage too high when using a universal power adapter.It usually comes with interchangeable tips, with many different brands supported. Some battery packs even work with your car’s 12-volt cigarette lighter, making them truly portable.
5. Use a Super Battery for Your Laptop
Super batteries are like second or spare batteries for your laptop. They have different charging cables, and they replace your original laptop battery.Ensure it fits your laptop and is the right size when you get one. Super batteries are brand-specific and may not work with your laptop if they weren’t explicitly designed for it. This method isn’t efficient, so it’s only for emergencies.
6. Keep a Spare Battery for Emergencies
A laptop with a dead battery can kill your productivity. Plan ahead by investing in a spare battery, but pick one for your specific laptop brand and model.Unlike super batteries, these are regular batteries that don’t require different charging cables. A spare battery is a life-saver for those times when your laptop’s battery has run out, and none of the alternative charging methods are currently available.
7. Use Your Computer’s USB Port for Charging
You can connect your laptop via a cable to another computer’s USB-C port to recharge its battery. USB-A ports won’t work, so be sure to plug the laptop into the computer’s USB-C port.However, you should note that if the charger or charging port cannot provide the required voltage, the laptop will charge slower than usual. This is normal and nothing to worry about.
8. Buy an External Battery Charger
An external battery charger enables you to recharge your laptop’s battery when it won’t charge due to a faulty motherboard or DC socket.
Provided your computer has a user-removable battery, take it out and mount it on your external charger. Connect the charger to power and wait until the flashlights indicate the process is finished, then reinstall the battery in your laptop. That’s it—you’re good to go!Pick an external battery charger specifically made for your machine. External battery chargers aren’t universally compatible across laptop brands.
9. Use a Phone or Tablet to Charge Your Laptop
Many smartphone brands like Samsung and some tablets like iPads support reverse charging, meaning they act like USB power banks.On Android, you may need to enable this capability in settings. Otherwise, connect your laptop to the tablet’s USB-C port to give it a quick battery boost when you need it most.However, you should limit reverse charging to emergencies to avoid overheating the battery in your phone or tablet, which can shorten its lifespan.
