Quote:
Originally Posted by Jyden
If we assume, that it can produce 28 kWh a year...
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Can we assume your car will use the 28 kWh that is your setup would be capable of producing? When parked, your car would only utilize a fraction of the 28 available solar watts, maybe half a watt at best on a fully charged battery. You would have to run the battery down to utilize the charging capability of the panel. The problem is, lead acid batteries don't like to be discharged, and any marginal savings you would have from solar charging would be more than made up for by reduced battery life. As you point out, it's possible to run the battery down and then have something block the PV from recharging it.
Effort would be better spent improving the charge/discharge system by cleaning up terminals and installing a battery technology that is better than 50% efficient (lead acid).