MIO P550 how to avoid it shut down by itself?

ccpyu

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Jan 27, 2007
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When I navigating with my MIO P550 with only the battery, it will shut off by itself, and it will stop navigating. How can I keep it running in this situation? As it is named as "DigiWalker", it should work all the time with only using the batter. Any one has this problem and how to solve it? Thank you.