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Imo you will be better off connecting it direct to the battery .

atb

Wizard

You MUST have an ACCU CHARGING REGULATOR between the panel and the battery, or else you will cook the battery, like i did.

Alan

how many watts does the charger produce????

if over 18 watts with a 110 battery then you will need a controller ( approx 13 watts with a 85ah battery

Hi, we just bought 5 of these (ebay £50+vat for 5) for use with electric fencing, a kids go-kart and our caravan.  I know that with the fencing we can leave the fencing unit in operation while the solar panel acts as a trickle charger.  But if you had it plugged in to a car via the cig lighter, you must not start the engine until you unplug it or you will fry the solar panel with the surge.

You only need a charge controller if the output of the panel is 10% or more of the batterys capacity , eg 100amp hour battery can use a 10watt panel without a charge controller .

Hi TheFarmersWife3 , you can leave a solar panel connected to the car and start the engine , there will be no effect on the panel , i've had a panel permantly connected to my car for the last 4 years .

My caravan solar panel installation see Here .

The start of my house solar system with tracker.


atb

Wizard 

Quote: Originally posted by TheFarmersWife3 on 06/7/2009

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Thanks Wizard, i was only going by the instruction that came with it.

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Your welcome .

atb

Wizard