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Old 15th March 2015, 05:56 PM
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ScottD3 ScottD3 is offline
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Join Date: Oct 2012
Location: Plymouth
Posts: 1,888
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I don't think those solar chargers work very well.

I got a AA one with ODB socket and battery socket.
I connected it to a spare battery in the garage and over a week I checked the voltage in the battery.
Day one the battery was as 10 volts. By day 7 it was was 11.5.
The battery is less than 6 months old, so its not the battery.

Guy, You can buy 12v solar charger control units for caravans and such.
I think one of them will work fine connected to the battery correctly.
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