Fix an Anker 313 Power Bank that will not charge a device
Use the one output port, isolate the cable and connected device, and enable trickle charging only for low-power accessories.
Direct answer
The shortest reliable path.
On the Anker 313 Power Bank, charge a phone or accessory from the USB-A port. Its Micro-USB and USB-C ports are input-only and recharge the power bank itself. If USB-A still gives no output, test a known-working cable and a second device. For low-power earbuds, speakers, or watches, press the power button twice until the first LED turns green to enable trickle-charging mode.
System view
Check the whole path.
- 01Power-bank charge state
- 02USB-A output port
- 03Known-working cable
- 04Connected device input
- 05Optional trickle-charge mode
Scope before steps.
Anker 313 Power Bank units with USB-A output and Micro-USB and USB-C input ports described by Anker’s model-specific support article.
Other Anker power-bank models, USB-C output, laptop charging, wireless charging, internal battery repair, or damaged and recalled units.
Procedure
Do this in order.
- 01
Use the only output port
Connect the device to the power bank’s USB-A port, not its Micro-USB or USB-C port.
- 02
Confirm the power bank has charge
Press the power button to read the LEDs and recharge the bank through a supported input if needed.
- 03
Substitute the cable
Test the same USB-A output with another known-working cable that fits the device.
- 04
Substitute the connected device
Use the known-working cable to charge a second compatible device from the same USB-A port.
- 05
Enable low-current mode only when needed
For low-power earbuds, speakers, or smartwatches, press the power button twice and confirm the first LED turns green.
Diagnostic matrix
Read the result, not the guess.
| What you see | Check next | What it means |
|---|---|---|
| A device is connected to USB-C but does not charge | Move the device cable to USB-A. | The 313 model’s USB-C port is an input, not an output. |
| A second cable works | Retire the original cable and retest the first device. | The output port is functioning and the first cable failed the isolation test. |
| Another phone charges normally | Troubleshoot the original device and its input requirements. | The power bank can supply output to a normal-load device. |
| Only a small accessory fails | Enable trickle charging and verify the green first LED. | The device may draw too little current for normal output mode. |
Stop conditions
Know when not to keep changing things.
- Stop this procedure if the product is not the Anker 313 model covered by the cited article.
- Do not keep testing the input-only Micro-USB or USB-C ports as device-charging outputs.
- Contact Anker when a charged 313 cannot power a second compatible device through USB-A with a known-working cable.