To charge an Anker power bank, connect it to a compatible wall adapter using the correct cable and plug it into the input port. Always avoid charging the power bank while it is simultaneously powering a device, as this pass-through charging can cause overheating and potential damage.
Before you start: first-time calibration and safety checks
For first-time use, fully charge the power bank to 100% to ensure the internal battery management system is properly calibrated. Always use the original charger and cable, Anker accessories, or reliable third-party accessories that meet applicable safety standards. Check that the output specifications of your charger are compatible with the power bank's input rating. The input port on your power bank is usually labeled "IN" or "Input" and may be USB-C or Micro-USB; for newer models, a USB-C port often functions for both input and output, marked as "IN/OUT."
Step-by-step charging instructions
- Connect the charging cable to the power bank's input port first.
- Plug the other end of the cable into a wall adapter.
- Monitor the LED indicators: blinking lights mean charging is in progress, and when all lights are solid, the power bank is fully charged.
Understanding your power bank's LED indicators
Most Anker power banks indicate charging progress with blinking or flashing LED lights. When all lights are solid, the power bank is fully charged. Some advanced Anker power banks feature digital displays that show real-time battery level, remaining charging time, and total charging hours. This helps you understand exactly how much power remains and how the power bank work to deliver that information.
Tips for faster and safer charging
For faster charging, use a higher-wattage wall charger that matches or exceeds the power bank's rated input wattage. Charge your Anker power bank in a cool, dry, and well-ventilated area, keeping the ambient temperature between 32°F and 95°F (0°C and 35°C). Avoid charging the power bank in direct sunlight, high-temperature environments, or on soft surfaces like beds or sofas. These practices are essential for safe power bank usage and selection.
Protecting your battery health for the long term
Disconnect the charger once the power bank is fully charged; Anker recommends unplugging before sleeping to protect battery health. For optimal long-term battery health, avoid letting the power bank fully drain before recharging and try to keep its charge level between 20% and 80% for daily use. Modern Anker power banks have built-in protection circuitry to prevent overcharging, but continuous charging to 100% can still slightly reduce the long-term lifespan of lithium-ion batteries. The critical rule is to never charge the power bank and a device simultaneously.
How to store your Anker power bank
If storing the power bank for an extended period, maintain its battery level at about 60% (typically 3 indicator lights) and recharge it every 3 months to prevent deep discharge. This practice helps preserve battery capacity during long periods of inactivity.
Troubleshooting: what to do if your power bank won't charge
If your power bank is not recharging, try using a different wall charger or plug, a different charging cable, or a different wall outlet. This quick checklist helps isolate whether the fault lies with the adapter, cable, or outlet rather than the power bank itself.
Frequently Asked Questions
Can I charge my Anker power bank with a computer USB port?
Yes, you can charge it from a computer's USB port, but this will be significantly slower than using a wall adapter because computer ports typically deliver lower wattage.
How long does it take to fully charge an Anker power bank?
Charging times vary significantly based on the power bank's capacity and the charger's wattage. A 10,000mAh power bank can take 1.5 to 6 hours, while a 20,000mAh unit can take 1.5 to 12 hours.
Is it safe to leave my Anker power bank plugged in overnight?
Anker recommends unplugging before sleeping to protect battery health, even though modern power banks have built-in protection circuitry. Continuous charging to 100% can slightly reduce the long-term lifespan of lithium-ion batteries.
What does it mean when the LED lights on my power bank blink?
Blinking or flashing LED lights indicate that the power bank is actively charging. When all lights become solid and stop blinking, the power bank has reached a full charge.
Can I use a fast charger to charge my Anker power bank?
Yes, you can use a fast charger as long as it is compatible with the power bank's input rating.
