I think you'd be surprised. Toured on a tandem using google maps + gps on a G1. Had extra batteries just in case, but during any given day, while on the bike, we didn't need to change it (although it was about to give out at the end).
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I think you'd be surprised. Toured on a tandem using google maps + gps on a G1. Had extra batteries just in case, but during any given day, while on the bike, we didn't need to change it (although it was about to give out at the end).