Do I need my GPS?

I have a Garmin nuvi 760 which I bought to use in my car - before I bought my new car that has a built-in GPS screen. I was thinking that I no longer had a use for the nuvi but then I found this great site GPSTravelMaps.com from which one (I) can download a topographic map of Mt Kilimanjaro onto a GPS device including my nuvi.

Here is how it is described on their website: "In addition to the contours of the mountain, other geographic features are included in the map. Park boundaries for Kilimanjaro and Urusha National Parks, hiking routes to the summit, national and local roads, rivers and streams, lakes and wetlands, airports, campsites, and many more. This map is continually being upgraded to provide the best GPS map for the area."

But in truth I have never learned how to read a contour map. Should I try to learn now?

And what about keeping it charged? Obviously it would have to be with solar power. I do have a small device called a Microlink FR150 that I bought (for my son who has never used it) at Cabela's. It is a "Solar-powered, self-powered (read: hand crank) AM/FM/Weatherband Portable Radio with Flashlight and Cell Phone Charger." But it does have a USB port. So if I connected the nuvi to the Microlink using a USB cord and charged the Microlink using the solar panel, would I be able to charge the nuvi? I'll have to check it out. The wonders of technology!

But I'm still left with the question of whether to take the nuvi on the trip. If anyone out there has an opinion on this subject, please leave a Comment.