Not enough testing

The penny dropped yesterday: the USB power supply on my bike does not have enough juice to keep my phone going continuously. It is proper motorcycle unit, but obviously not a very good one.

This has caused me to lose a lot of GPS tracks and to get lost a few times.

I will modify it when I get home, but its a problem right now.

I need to find out the operating current of the Lumia 920 phone and make sure the USB power supply can provide that and a bit more, so i can recharge the battery and used the GPS apps at the same time.

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