dual battery isolators???

[john3387 10+ year member]

anyways just taking my daily look threw ebay and i stubble across dual battery isolators, and they dont seem that bad. with this i would be able to put in a second battery without damaging the alternator? right? and if this would not destroy my alternator how many amps do you think i would need to keep a yellow top going to a mtx ta81001? i dont know $hit about alternators, or battery isolators and dont know if this is a stupid idea or if it might work so i could get the most power to my amplifier as possible. thanks for any help!

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[azeroth123 10+ year member]

a second battery doesn't destroy an alternator, isolator is only needed if you plan on running the system with the engine off for long periods of time, otherwise completely unnecessary and slightly detrimental to the electrical setup.

 

[Crzy 10+ year member]

yea i put one in, helps if u wanna just sit in a parking lot and bump ur system with the car off so you dont drain ur starting battery. once the ignition is on nto just acc the two batteries are tied together again