Installing a second batt in trunk, what else is needed?

[Fattony911 10+ year member]

Well im drivin a C230 Mercedez and the stock batt. is in the back. What would be the easiest way to drop in an extra one for a little more power. I was told I should upgrade my alt. Before adding any extra batts.Also if i do put an extra batt back there with the stock one, should i run some more power wire from the stock batt. back up to the alt. It looks to be about 4awg right now?I appreciate any help.

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[Chevyaudio 5,000+ posts]

With the battery being in the back, I would definatly upgrade the wire from the alt to the stock battery with 1/0. As for a second battery it may help, but it would only be a band-aid for your problem, if you are running into serious voltage drop issues. I always recomend doing an alternator first, before spending cash on batteries.

 

[Fattony911 10+ year member]

With the battery being in the back, I would definatly upgrade the wire from the alt to the stock battery with 1/0. As for a second battery it may help, but it would only be a band-aid for your problem, if you are running into serious voltage drop issues. I always recomend doing an alternator first, before spending cash on batteries.

Thanks man! that's what i needed to hear //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

 

[theCybe 5,000+ posts]

* Battery isolator

 

[Pyro_By_Nature 5,000+ posts]

* Battery isolator

Not helpful and a complete waste of time, if you're not trying to play your system with the car off, and do not want the starter battery affected.

 

[theCybe 5,000+ posts]

Competition = playing the system with your car off //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

 

[Pyro_By_Nature 5,000+ posts]

How many competitors do you see using battery isolators? When you're competiting you want the most available battery power.