Charge your Anker portable charger with the USB cable that came in the box, plugged into any standard wall outlet or computer USB port

Anker portable chargers ship with a USB cable — usually USB-C to USB-C or USB-C to USB-A, depending on the model. Plug one end into the charger itself and the other into a power source: a wall outlet (using any USB power adapter), a computer, or a car charger. The charger will have an LED indicator light that shows charging status — usually a solid light while charging and a different pattern when full.

Most Anker chargers take 4 to 8 hours to reach full capacity from empty, though larger models can take longer. You do not need to fully drain the charger before recharging it. In fact, topping it up regularly extends its lifespan more than waiting until it is completely empty.

Key Takeaways

  • Use the USB cable included with your Anker charger, plugged into a wall outlet, computer, or car charger.
  • Check the LED indicator light on the charger itself to see whether it is charging, fully charged, or low on power.
  • Charging time ranges from 4 to 8 hours depending on the model size and the power adapter you use.
  • You can charge your phone from the Anker charger at the same time you are charging the Anker itself, though this slows both processes.

What the LED lights mean on your Anker charger

Every Anker portable charger has LED indicator lights on the body. These lights tell you the current charge level and whether the charger is actively receiving power. A solid light usually means the charger is plugged in and charging; a blinking light often signals that charging is complete or nearly complete. Some models show multiple lights — one for each 25% of capacity — so you can see at a glance how full the charger is.

If the light is off or very dim when you plug in the charger, the battery may be completely drained. Leave it plugged in for at least 30 minutes before checking again. If the light still does not appear, try a different USB cable or power outlet to rule out a faulty cable or adapter.

Choosing the right power adapter for faster charging

The USB cable alone does not determine charging speed — the power adapter matters just as much. Anker chargers work with any standard USB power adapter, but a higher-wattage adapter will charge the charger faster. A 5-watt adapter (common with older phone chargers) will take longer than a 18-watt or 30-watt adapter.

Check the specifications on your Anker charger's box or manual to see what wattage it supports. Most modern Anker chargers support 18 watts or higher. If you have a newer phone charger with a higher wattage rating, using that adapter will cut charging time noticeably. You do not need to buy a new adapter — any USB power adapter you already own will work, just at a slower pace.

Charging your phone while the Anker charger itself is charging

You can plug your phone into the Anker charger while the charger is plugged into a wall outlet. However, this splits the power between charging your phone and charging the charger itself, so both processes slow down. If speed matters, charge the Anker fully first, then use it to charge your phone.

If you need both devices charged at the same time, use a wall outlet with multiple USB ports or plug the Anker into one outlet and your phone into another. This way each device gets full power and charges at normal speed.

How to know when your Anker charger is fully charged

Most Anker chargers show a steady or solid LED light when fully charged, or the light may turn off entirely. Some models have a button you can press to check the charge level — pressing it will light up the LEDs to show how full the battery is. Check your charger's manual or the Anker website for your specific model number to confirm what "full" looks like.

Once the charger is full, unplug it from the power source. Leaving it plugged in indefinitely does not damage modern Anker chargers, but unplugging it when full is a good habit and saves a small amount of electricity.

Troubleshooting when your Anker charger will not charge

If your Anker charger is not charging, start with the cable and adapter. Try a different USB cable first — the original cable may be damaged or worn. Then try a different power adapter or outlet. If the charger still shows no signs of life after 30 minutes, the issue may be with the charger itself.

Anker chargers come with a warranty that typically covers manufacturing defects for one to two years from purchase. If the charger is still under warranty and will not charge after you have tried multiple cables and outlets, contact Anker support through their website with your proof of purchase. They can troubleshoot further or send a replacement.

Storing your Anker charger when you are not using it

Store your Anker charger in a cool, dry place away from direct sunlight and heat sources. If you plan to store it for more than a month without using it, charge it to about 50% capacity first. A charger stored completely empty or completely full for long periods can lose capacity over time.

Check the charge level every few months if the charger is in storage. If it has drained significantly, plug it in and top it up. This straightforward step keeps the battery healthy and ready to use whenever you need it.

Frequently Asked Questions

Can I use any USB cable to charge my Anker charger?

Any USB cable that fits the port on your Anker charger will work. Most newer models use USB-C, so a USB-C to USB-C cable is ideal. If your charger has a micro-USB port, use a micro-USB cable. The cable included in the box is the safest choice, but any quality cable of the correct type will charge the charger.

Is it bad to leave my Anker charger plugged in overnight?

Modern Anker chargers have built-in protections that stop charging once the battery is full, so leaving it plugged in overnight will not damage it. However, unplugging it when full is slightly better for long-term battery health and uses less electricity. If you regularly charge it overnight, consider unplugging it once the LED light shows it is full.

Why is my Anker charger charging slowly?

Slow charging usually means the power adapter is low-wattage or the cable is damaged. Try a higher-wattage adapter (18 watts or more) or a different cable. Also check that you are not charging your phone from the Anker at the same time, which splits the power. If charging is still slow after trying these steps, the charger battery may be aging.

How often should I charge my Anker portable charger?

Charge your Anker charger whenever it drops below 20% capacity, or before a trip when you know you will need it. You do not need to wait until it is completely empty. Regular top-ups actually extend battery lifespan compared to fully draining it each time.

Can I charge my Anker charger with a solar panel?

Yes, if the solar panel has a USB output port rated for at least 5 watts. Plug the USB cable from your Anker charger into the solar panel's USB port. Charging will be slower than a wall outlet, especially on cloudy days, but it works as a backup option when you do not have access to electricity.