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Old Jan 26, 2013, 02:26 PM
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Letchworth, Great Britain (UK)
Joined Jul 2004
12,907 Posts
The camera unit could have been faulty; but the fact that it worked okay with a 12v charger (I presume you mean 12v nominal output?), and then smoked as soon as you connected a 12v battery, suggests to me that the battery must have been connected wrong way.

Depending on the type, a 12v charger could easily be putting out more than 12v if there's not much load on it. So, is there any chance the damage started while the unit was powered by the charger?
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