Quote:
Originally Posted by dirtydave
after many many days of having the car parked and leaving the lights on, 4 solid days she has died.
I'm looking to spend $250-$500. I have a 110V house charger. I would like to be able to keystart at the left turn traffic light with my turn signal on after a 4 mile EOC, radio on blast, headlights on, blower motor on and radiator fan on, and charge my phone with no problems. My alternator works fine but would also like to take it off during the summer for short trips.
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You parked your car for several days with the lights on? That will certainly kill a battery.
Any battery should get you 4 miles of EOC as long as you give the alternator enough time to charge after starting the car.
As for running without an alternator; you need to estimate your electrical loads and decide how long of a trip you want to be able to make without running the alternator.
Speaking for myself, I'd never relocate a battery to the trunk because I use that space and running thick copper wires that distance is not efficient. I also wouldn't run a lead-acid battery because they are heavy and don't like to be deeply discharged. Finally, I would size a battery that can cover 95% of my trips without running the alternator, but not so large that I could go for hours on end. There just isn't a justification for taking up that much money, space, or weight.
Finally, if you park outside and do end up getting a lead-acid battery, buy a
5w solar panel to keep it topped up.