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profdant139's avatar
profdant139
Explorer II
Apr 06, 2022

Break-even point between cable length and voltage drop?

I have two cables for my portable solar panel – one is 40 feet long, and the other is 70 feet long. (We boondock, and we like to park the trailer in deep shade and put the panel out in the open sun.)...
pianotuna's avatar
pianotuna
Nomad III
Apr 06, 2022
profdant139 wrote:
I know this for a fact because we test our battery (at rest) with a voltmeter almost every evening, after the sun goes down. It's almost always at 12.7 volts.


For voltage to useful the battery needs to 'rest' for 24 hours.

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