I was just wondering, ive seen people put batteries in the back of their cars to run part of their systems, wont thatdraing that battery quickly? i was wondering because im thinking of doing that. thanks
yep, it can be done...
Here is a link of a grand discussion of that very subject...
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It all reminds me of something that Molière once said to Guy de Maupassant at a café in Vienna: "That's nice. You should write it down."
Running another battery in a trunk can be done but it has to be done with caution. I read the link above but if forgot to mention some things. Even if you are running two batteries in your trunk you have to be very careful.
The reason people use the isolators is because if you are playing your system with your car off you might want to drive it sooner or later and with out isolating your batteries there is a possibility that you could drain both batteries. The isolator prevents both batteries from draining but allows them to charge up at the same time.
The thing about having the same batteries is not tottaly a fact. when installing a battery in the trunk you might consider a dry cell. Installing a wet battery in the trunk requires additional work for saftey. A wet battery requires a contanment box and vent to release air to the outside of a car. The purpose of the containment box is to keep the battery fumes from getting into the car and the vent allows the fumes to escape the car. Yes, there are sealed wet batteries but they still are probabilities that they can leak and eventually kill you with non-detectable fumes.