it will not make diference eczept the starting on the car audio battery sometimes will be slower than a tipycal starting battery.. but its not worth to put a 500 dollar battery in the trunk... regular starting batteries can push 1500 amps at 1 second or less thats why for starting its better those bateries alot more current for starting but then the amps start to go alot lower to the rated amps of the battery depending how much heat its under the hood
Correct, the front battery makes absolutely no difference when using an isolator. That's what an isolator does, isolates the two electrical system from each other, and allow one alternator to power both.
Also what Berny said is true but it is negligible. There will still be enough voltage to charge both batteries. Just make sure your rear battery has a good ground. A bad ground will cause more voltage loss than an isolator.
I "was" going to use a battery isolator but decided not to use one. Invest that money into a optima yellow top or so in the front and w/e batter you were going to get in the back. Batteries don't have to be the same make and model, just the same type.
Such as. Wet cell and wetcell drycell and drycell regular acid and regular acid
Also, if you plan to play your music with your car off, then a battery isolator is usefull as well. But imo "I" would rather pay for that extra gas and play my music with my car on.
Save your $$, best thing to do when it comes to car audio.
so i have a regular starting battery in front and a sealed SVR in the back (in the mail) i really dont wanna isolate them. since i drive my vehicle each day would they really drain each other that bad ??
SVR is a newer brand of car audio battery. i know the logical thing would be to isolate them. but if my alty is charging them both up everyday will it really be a big problem in the short-term?
If you drive the car everyday it will probably work. But who knows how much you may shorten the life of the batteries, that's why it's not recommended.