Thanks for the reply Jaokim Agren.
I now have my
X10 
and have made my wind-up charger MkI. The charger works but I'm not entirely happy with it, so MkII is on the way. I still have not gone anywhere near discharging the
X10 battery as I haven't done any heavy
GPS use, so charging through the USB while connected to the trek manager has been enough.
Cheers!
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 | Suunto X10 |  | Suunto commemorates 10 years with the Suunto X10. When you're trekking through a new frontier, adventure racing, biking, fishing, or conducting field operations, the Suunto X10 provides critical decision-making data. With full GPS functionality, including route planning and uploading, as well as outdoor essentials like an altimeter, barometer, and compass, the Suunto X10 wristop computer shows nature who's boss. | |  |
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