|
I have a 40w panel on the MB100 roof. In reality, if I aim it directly at the midday sun I get 16.8w. On the flat roof I've never seen more than 11w out of it (roughly enough to run the stereo).
With the alternator connected, the panel only takes 30mins to fully recharge the battery after the engine is turned off. I would really need to swtich off the alt some time before parking so that the panel would actually have some work to do. The amount of time I could run without the alt would depend on how long I plan on being parked, but if I then have to park near a tree, power pole etc that could cause a problem.
Currently, the panel is mostly wasted as the alt keeps the battery very close to full, but it should be very good for battery life.
|