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Yes, cables everywhere cause trouble in the dark.
These dew heaters were an important step towards the mobile observatory. With lower current, smaller battery.
Today I orderad a 24 Volts Lithium battery for my new project. I come back about that in a new thread later. 24 Volts an 12 Amph, about 300 Wh. My lead car batteries: 12 Volts and 45 Amph gives about 500 Wh but can't even use half of it, the other 12 Volt and 72 Amph gives 850 Wh. Both batteries are now destroyd because I let them uncharge too deep.
/Lars
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