Article Summary: How to charge external USB devices (i.e. cellular phones, portable music players, etc.) using power from the battery.
Note: On many of the new notebook systems the Default setting in the BIOS for USB PowerShare is = Disabled.
Only the USB connector with a lightning bolt icon, as seen in the image below, can be used.
Note: To enter the BIOS tap the < F2 > key on the keyboard after turning the system on at the Dell logo.
This functionality is enabled in the system setup under the On Board Devices heading. You can select how much of the battery's charge can be used as well (pictured below). If you set the USB PowerShare to 25%, the external device is allowed to charge until the battery reaches 25% of full capacity
(e.g. 75% of the portable's battery charge is used up).
When this option is set to Disabled, the USB PowerShare feature will be turned off and devices attached to the USB PowerShare port will not be charged when the system is in a low power state. Selecting any of the other settings enables the feature and specifies the system battery capacity at which charging of a USB device attached to the USB PowerShare port will be terminated.
Note: Powershare will only power devices while the system is in a 'low power state' (Standby) mode when the system is running on battery power only. Depending on the model of system and BIOS revision the system will only allow the battery to discharge down to 50% at which point the Powershare feature will become disabled.
Also check that the USB configuration options are enabled and ticked. (depending on the model of system and the BIOS revision should look like the screen below)
Note: The Latitude E6510 does not support the USB PowerShare feature.
At time of release the online documentation and the BIOS may show the feature as available. It is not supported on this model and the documentation and Bios will subsequently be updated to reflect this.
Quick Tips content is self-published by the Dell Support Professionals who resolve issues daily. In order to achieve a speedy publication, Quick Tips may represent only partial solutions or work-arounds that are still in development or pending further proof of successfully resolving an issue. As such Quick Tips have not been reviewed, validated or approved by Dell and should be used with appropriate caution. Dell shall not be liable for any loss, including but not limited to loss of data, loss of profit or loss of revenue, which customers may incur by following any procedure or advice set out in the Quick Tips.