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Old 03-30-2021, 04:18 PM   #9
Join Date: Mar 2021
Location: Davis,CA.

Originally Posted by Khrrck View Post
It will vary based on how much power your charger generates, what accessories your particular car is equipped with, and how bad a shape your wiring is in after 35 years.

You could, as an alternative, re-wire the lighter socket to be always hot and then charge with the key off. Or: add one of these behind the dash or inside the glovebox and wire to be always hot (

Either way make sure to do proper wiring connections - solder and shrinkwrap or good crimps - and make sure it is fused! Your charger may only generate a couple amps but if it gets backfed from the battery or alternator you don't want anything dodgy or flammable going on.
thanks Khrrck.
The solar charger I just ordered claims to make 5 watts.
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