I've been monitoring the battery voltage with the smaller "charger" panel attached and it was fairly stable. The battery, despite being not that old isn't in great condition due to lots of really short journeys over last winter; it dropped low enough to not even start a couple of times and even lost the radio code once relatively recently.
However with the new 4.8W panel attached today for about 10 sunny hours the battery voltage at the end of the day was higher than I've seen it for some time (except immediately after having a drive) so I'm feeling positive.
I can't recall the exact battery capacity, but it will presumably be of the order of 100Ah. If the solar panel can deliver even half of its advertised rate that's about 0.2A, 2Ah over the day. Not masses, but way more than enough to cover the remote locking receiver and anything else running when locked. Maybe even enough to freshen the battery up a bit?
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2003 D2 FL S8. Irish Green Pearl/Beige. Solar sunroof, auto-dim mirrors, electric rear seat functions, ski hatch retrofit; extended leather. Aftermarket DVB-T, reversing camera and full XCarlink (Bluetooth etc.).
2016 Volvo V40 T5 Cross Country (4WD) with ALL the toys including adaptive cruise etc. etc. Osmium Grey with Blonde/Charcoal leather interior. Polestar performance "optimisation".  (A much rarer model than a D2 S8 by the way!) Oh, and a brand new engine at just under 30,000 miles on the factory one! 
Finally: gone, but not forgotten.....
1998 D2 PF S8. AgateGrey/Platinum. Every option (I think) except electric rear seats, tiptronic steering wheel, ski hatch, towbar & dimming door mirrors.
e.g. Cruise control, NavPlus/TV, Bose, GSM, Xenons, Solar roof, Parking sensors, Alcantara/leather everywhere of course.  (internal dimming mirror added later)
1998 (very early) Ford Focus 1.8 Zetec; ABS/TCS, Heated screen/mirrors, Aircon, Auto-dim mirror, Leather, Trip computer, Cruise control, OEM Ford SatNav with CD changer.
And before that a lot of Rover 800s, a few oddities, a lovely Triumph Dolomite 1850HL with Overdrive and way back in my schooldays an Austin Seven aka Mini 850!
Last edited by HPsauce; 22nd April 2020 at 08:43 PM.
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