Jake writes “I am going home for Thanksgiving. The bus ride there will take at least 11 hours, and I hope to use my trusty (Dell PDA) X50v for entertainment along the way. Obviously the standard battery will only last a fraction of that and I do not know if the bus will have any sort of power terminals available to me. My solution was to build a battery-powered charger, which would normally present little challenge. Being several hundred miles away from my workshop full of tools and scavanged parts, however, made this a little more fun Well, here it is, in all it’s hackey glory.” Link.
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