PV Gap

Christian Said:

every thing about solar car batterycharger?

We Answered:

If you are asking how one would work, then you would need a solar voltaic panel that would generate a higher voltage than the battery it is charging.
Depending on the complexity of the system, you may also need charging circuitry to ensure that the battery is not charged too quickly, or charged beyond it's capacity, although unless you have a high capacity solar cell, this is unlikely with a car battery.
Most solar car battery chargers are dumb chargers (no charging circuitry), and just provide a trickle charge (just a few milliamps) to the battery to eliminate discharge over extended periods of time.

Joseph Said:

How long would it take an 18 Watt solar charger in optimal conditions to recharge a typical car battery?

We Answered:

About 40 hours from zero charge.

Toni Said:

Please tell me solar car battery charger retail price in delhi?

We Answered:

It might cost 3 cheeseburgers...possibly a side of ham

Tommy Said:

Is it now possible to recharge the battery of an electric car with a solar charger?

We Answered:

yes, but not as quickly as it needs to happen. you need to be able to charge your batteries fairly quickly during the time you drive the car, especially if you are driving more than 100 miles in a day. if you drive say 40 miles to work, park the car for 8 hours, then drive 40 miles home. you should have no problem keeping the batteries charged enough to drive everyday. however if you plan to drive 500 miles in a day, you are going to have a problem as you wont be able to generate enough solar power to keep the batteries charged for that distance. and that is the problem with electric cars, range. most people wont have a problem as they put on less than 30 miles per day driving, but those that need to drive long distances are going to have problems until solar panel technology improves rather substantially.