Yes, Anker power banks charge with a cable — here's what you need to know

Anker power banks charge through a USB cable connected to a wall outlet, computer, or car charger. The cable type depends on your specific model: some use USB-C, some use Micro-USB, and a few newer models support both. You plug one end into the power bank's charging port and the other end into a power source, then wait for the battery to fill. Most Anker power banks take 4 to 12 hours to charge fully, depending on the model's capacity and the wattage of your charger.

The cable itself is usually included in the box when you buy the power bank, though if you've lost it or need a replacement, standard USB cables work fine as long as they match your power bank's port type. The speed of charging depends partly on the charger you use — a higher-wattage charger (measured in watts or amps) will fill the battery faster than a lower-wattage one.

Key Takeaways

  • Anker power banks charge via USB cable connected to a wall outlet, computer, or car charger, not wirelessly.
  • Check your specific model's port type — USB-C, Micro-USB, or dual-port — because the cable must match.
  • Charging time ranges from 4 to 12 hours depending on the power bank's capacity and your charger's wattage.
  • The cable usually comes in the box, but any standard USB cable with the correct connector type will work as a replacement.
  • Using a higher-wattage charger (like a 30W or 65W adapter) will charge your power bank faster than a standard 5W phone charger.

Finding your power bank's charging port type

The first step is identifying which cable your power bank needs. Look at the charging port on the bottom or side of your Anker power bank. If it's a small rectangular slot, it's Micro-USB. If it's an oval-shaped port with rounded corners, it's USB-C. Some newer Anker models have both ports, which means you can use either cable.

You can also check the model number on the back or bottom of the power bank and search for it on Anker's website or the manual that came with it. The manual will list the exact port type and recommended charging specifications. If you no longer have the manual, the model number will pull up the product page online, where the port type is always listed in the specifications section.

What charger wattage to use

Anker power banks are designed to work with chargers ranging from 5 watts (a standard phone charger) up to 65 watts or higher, depending on the model. A 5W charger will work, but it will charge your power bank slowly — sometimes taking 12 hours or more for larger capacities. A 20W to 30W charger is a good middle ground and will charge most Anker power banks in 6 to 8 hours.

If you want the fastest charging, check your power bank's manual or the product page for the recommended wattage. Some high-capacity Anker models support 65W or even 100W charging, which can fill them in 2 to 4 hours. Using a higher-wattage charger than recommended won't damage the power bank — Anker builds in safety features to prevent overcharging — but using a much lower wattage than recommended will just take longer.

Charging from different power sources

You can charge an Anker power bank from any device with a USB port and the right cable. A wall outlet charger (the kind you plug your phone into) is the fastest and most common method. A computer's USB port works but charges more slowly because computers typically supply less power than a dedicated wall charger. A car charger with a USB port also works, though again, the charging speed depends on the car charger's wattage.

Some Anker power banks can also be charged from another power bank, as long as you have the right cable. This is useful if you're traveling and have two power banks with you. Just connect them with the appropriate USB cable and the charged power bank will transfer power to the empty one.

How to tell when your power bank is fully charged

Most Anker power banks have LED lights on the side or front that show the charging status. These lights typically turn on when you plug in the cable and turn off or change color when the battery is full. Some models have a button you press to check the charge level — each LED that lights up represents roughly 25 percent of the battery capacity.

A few Anker models include a small display screen that shows the exact percentage charged. If your power bank has neither lights nor a screen, you can unplug it after the recommended charging time listed in the manual and assume it's full. Leaving a power bank plugged in after it's fully charged won't damage it, but it's not necessary and wastes a small amount of electricity.

Troubleshooting a power bank that won't charge

If your Anker power bank isn't charging, start by checking the cable. Try a different USB cable of the same type to rule out a damaged cable. If a different cable works, your original cable is faulty and needs replacement. If the power bank still won't charge with a different cable, try a different wall charger or power source — sometimes the charger itself is the problem, not the power bank.

If neither a different cable nor a different charger works, the power bank's charging port may be damaged or the internal battery may have failed. Anker typically offers a warranty on power banks (usually one to two years from the purchase date), so contact Anker's customer service with your receipt or proof of purchase. They can determine whether the unit is repairable or may be able to access for replacement under warranty.

Frequently Asked Questions

Can I use any USB cable to charge my Anker power bank?

Only if it matches your power bank's port type. USB-C cables work only with USB-C ports, and Micro-USB cables work only with Micro-USB ports. Using the wrong cable type won't fit or won't charge. Check your power bank's port before buying a replacement cable.

Is it bad to leave my Anker power bank plugged in overnight?

No. Anker power banks have built-in protection that stops charging once the battery is full, so leaving it plugged in won't overcharge or damage the battery. It's not necessary to leave it plugged in, but it won't harm the power bank if you do.

Why is my Anker power bank charging so slowly?

The charger you're using may have low wattage — a standard 5W phone charger charges much slower than a 30W charger. Try using a higher-wattage charger if you have one. Also check that the cable isn't damaged and that the charging port is clean and free of dust or lint.

Do Anker power banks charge wirelessly?

Most Anker power banks do not support wireless charging — they charge only through a USB cable. A few newer Anker models do include wireless charging capability, but this is clearly stated in the product name and specifications. Check your power bank's manual or product page to confirm whether yours has wireless charging.

What's the difference between charging with USB-C and Micro-USB?

USB-C is newer and charges faster because it can handle higher wattages. Micro-USB is older and charges more slowly. Both work fine; it just depends on which port your power bank has. USB-C cables are also more durable because the connector is reversible, so you can plug it in either way.