Sat Nav & Camera shutting off on journeys.

Hi all,

A few weeks ago I installed mounts for my Navigon Sat Nav unit & in-car CCTV on to my America LT.
They are both powered from a dealer installed power socket under the tank feeding a dual USB socket under the seat. Individual USB cables then run to each device..

When I first clipped the camera into its holder, it immediately turned on & displayed a normal charging icon (but after about two hours of riding the camera suddenly displayed a "low battery" warning & then it shut off. I checked all the connections but it would not stay on for more than a minute or two before shutting down so I unplugged it and put it in my saddle bag. When I got home I plugged it into the holder in my car & it worked perfectly (albeit that the charging light stayed on for quite a while).

Last week I took a ride down to the South coast. Before I set off I coupled up the Navigon sat nav and it displayed the normal "charging" icon on screen when the bike was idling, however, after about an hour or so of cruising along, the screen suddenly displayed a "low battery" warning and then the sat nav shut off.

I use both these devices regularly in my car and they have worked faultlessly on extended journeys (London to Moscow) without any "low battery" problem in the past so I've come to the conclusion that it may be something to do with the way the power to the USB cables is being regulated by the bike's electronics at lower revs. (2-3000rpm cruising speed).

Has anyone else had this problem when externally powering a sat-nav or camera (or both) or is it possible I have some underlying defect in the bike's charging system ?

Any help would be much appreciated..

 

Have to say, I didn't give that any thought Crispey but I've just researched the Camera & the Sat-nav and they both require a 5volt 1 amp min power supply, so 2 amp min... I've just discovered that the dual USB plug I purchased is rated at 5 volt 2.1 amp Max !!

I have a mobile power-pack that I know will power my CCTV camera for 16 hours so I'm going to rewire the camera to run off the power pack & just run the sat nav from the bike to see if that cures the problem...