Phones and tablets are often valuable backup navigation systems, with many excellent navigation and weather programs available such as qtVlm and LuckGrib. It is known that location services, which we must turn on to access the internal GPS, cause an enhanced drain on the battery. Here we look into how much of a drain is this.
The topic came up again as we introduced the new low-cost miniature AIS called dAISy that will not only run in any computer-based nav program, but it will also work plugged into an Android phone or tablet running qtVlm. The battery-life question then extended to how much more of a drain will it be to run this AIS in a phone, which will be on top of the drain from the required location services.
Below we see the battery drain with with dAISy being fully powered by an Android phone along with qtVlm.