I am assuming that the car is running when the items are being used.
if the auto is running the battery will not as you say run down.
Disclaimer: i don't understand something approximately autos! I recall whilst i became into youthful, we've been using abode at evening and each and all the lighting fixtures fixtures in my mom's van started out to dim. We made it very almost each and each of ways abode (we've been a lengthy techniques from abode) in the past the van died. It seems that it became into the alternator. You did not say if the automobile will start up back, my guess is that it will not. back, i don't understand something approximately autos, so it could be the battery, yet my guess is the alternator. solid success!
Yes, it will drain the battery if left plugged in for a long period of time. Usually the battery will hold a charge for a long time without the car running unless the battery is old. When was the battery purchased and how quick is the battery going dead?
Car is running? No sweat!
