Not much. The phone should be charged in less than one hour. My car radio functions without the key and automatically times out in one hour. As to you turning the key to ACC, the first notch, that may not be even needed. But you failed to mention the year and brand and model of the car. In some cars, the cigarette lighter socket is not powered with the key in the OFF position. Go to ONE slot only. Read the car manual for more specific information of this car.

I'm suspecting "driver error", but it could be a mis-adjusted clutch. If you have a friend who really knows his way around a manual transmission, he / she will know how to check for that.

Solve this problem right away. If you're grinding any gear 60% of the time, you won't have gears for very long.

Yeah, bulbs out, sockets, connectors, you pull a trailer(s) and wire them different than the truck/car whatever you are working on, and connections and fuses and relays, shorts, bad grounds, etc. wrong bulbs, water entry. live on a dirt road, with washboard surface, pot holes, etc. (that wears the bulb at the nubs on the bottom)
and, if you have trouble with the main light switch, its connector, it's wires, you can get a well made motorcraft repair kit, or whatever this is, for upgrading the wires that get hot, and melt the lightswitch connector plastic. and cause crispy connections there.
And out by the battery, you can service the harness where it goes to the battery and or starter relay and the fuselinks etc.
And some vehicles have trouble at the firewall where the main gang plug brings it all in thru the firewall, the added resistance adds to the heat in the wires and vibration and such skakes and loosens the fit of the pins on some.