Your Garmin help, please

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c*j*f

Does anyone have any suggestions for a good external power source that can fit into a top tube bag to power a Garmin for longer rides? The Garmin battery lasts for about 10 hours and won't last for a 200km+ ride.

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freezing77 in reply to @c*j*f

IIRC the garmin battery is about 1000 mAh, so get an Anker battery bank based on that. The smallest are approx 3500 mAh.
https://www.amazon.co.uk/Chargers-Anker-Accessories/s?ie=UTF8&page=1&rh=n%3A340327031%2Cp_4%3AAnker

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c*j*f in reply to @freezing77

Super - thank you
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fussballclub in reply to @freezing77

While we are at it do you have any idea how to stop my Garmin 800 going all screen bright when it recognises or looses external power?

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