i was thinking of putting a marine battery in my trunk to power my amp cepritly caus i think it is putting too much stress on my alternator, only problem i can see with this is the battery dieing on me with no where to charge it. any tips or ideas?
thanks

 

run wire from ur + and - of ur stock battery, add a battery isolated and wire it up as well other ppl would be able to give u more in depth info on that i havent had to do that yet so i may be wrong

 

k il look into that thanks

 

ceprit?

separate maybe?

 

lol sory sory my bad, but anyone know anything about the secondary slave battery he was talking about?

 

LOL, I clicked on this thread thinking it was about a new brand of battery...


Adding a battery is really easy, positives get wired together, ground to the frame or main battery, buy an isolator if you want but I personally don't like them.

Only thing is, both batteries need to be the same, as in new and same model. If they are too different the weaker one will leech off of the better one. Batteries should be vented to the exterior as well so you don't fill you car with fumes when they vent. Fusing the positive lines is a good idea as well.

 

^^^ AFAIK you should run an isolator, otherwise the weaker battery will pull the charge down on the other battery, and eventually the two batteries will keep draining each other.

 

a proper battery mounting kit, installed following the instructions combined with an isolator should eliminate most of the common problems.

summit offers a few good kits if you dont mind bringing them from the states.

although if your alternator cant cope with the drain of your system, how do you suppose its going to cope with charging a separate battery that is being drained by your system?

IMHO, an upgraded alternator would be a better solution to your problem, unless you plan to run a battery charger overnight.

 

So GM/Ford/Dodge are all unaware of this and should be using isolators on their 2 battery trucks?

Isolators are meant to make sure your starting battery keeps a charge even if you beat on the other one. If you just want the extra reserve/cca you don't need an isolator.

 

Fair enough, I was always under the impression that an isolator should be used, I was wrong obviously.