Portable Ground Power: Audio Authority Excels

A portable GPU is an easy way to lengthen battery life. Audio Authority and Start Stick get high marks for performance and design.

Upgrading to electronic flight displays and a data-hungry GPS navigator? Add a reliable GPU (ground power unit) to the budget. That’s because you’ll have the master switch on for extended periods while loading nav data, uploading flight plans and fetching engine trend data. If those chores don’t kill an otherwise healthy battery, messing around with […]
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