Extra battery

Wink · Post by **Wink** » Sat Mar 10, 2007 12:54 pm

In some systems ive seen an extra/seperate car battery in the trunk.
now how does one set that up im just interested in knowing how to do that,

And how does it work?

Capital_M · Post by **Capital_M** » Sat Mar 10, 2007 1:01 pm

Well sometimes its just a relocated battery

Haz · Post by **Haz** » Sat Mar 10, 2007 2:11 pm

For a Dual battery set up it is essential you get an isolater like the stinger sr200 and connect the batteries in parallel:

http://www.hifisoundconnection.com/Shop ... /SFV/30046

If wire the batteries without an isolator then they will fight for power "only" when the car is "switched off" and eventually one battery will die. I have experiened that myself. I would recommend you use a deep cycle battery like the optima yellowtop.

Haz

Phoenixcolt · Post by **Phoenixcolt** » Mon Mar 12, 2007 7:42 pm

Haz wrote:For a Dual battery set up it is essential you get an isolater like the stinger sr200 and connect the batteries in parallel:

http://www.hifisoundconnection.com/Shop ... /SFV/30046

If wire the batteries without an isolator then they will fight for power "only" when the car is "switched off" and eventually one battery will die. I have experiened that myself. I would recommend you use a deep cycle battery like the optima yellowtop.

Haz

Yup this is excellent info as I too had a problem with my sr200 a short while ago. It killed my Optima Yellow, but luckily it is a deep cycle and recharged fine. Make sure you wire the isolator to the correct ignition wire

.