I have a battery charging socket (optimate type, in a rubber holder) fixed to the front of the top yoke.
I use that for satnav too, though probably just "because it was there".
Its handy for both functions though .. and you never need both at the same time.
A better socket might be worthwhile, but I've had no problems with this one.
I did need to fit the matching plug to the satnav lead, which was easy enough .. but the waterproof cover was a bit Heath/Robinson, hence the improved socket suggestion.
But the principle of combining the two functions seems like a good one.
All that said, I'm new to satnavs myself so I may be off beam.
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