VL : 2nd battery for amps.

[Goon]

Hey all

Just wondering what will i need to connect a 2nd battery for my ride?

i want it to go in the boot "possible a 4cyl battery? its just for amps only"

a way it can be charged? and connected to the main battery still? i guess ill need some parts for this?

Cheers
Goon

[| evaN |]

Hey all

Just wondering what will i need to connect a 2nd battery for my ride?

i want it to go in the boot "possible a 4cyl battery? its just for amps only"

a way it can be charged? and connected to the main battery still? i guess ill need some parts for this?

Cheers
Goon

If you're going to go through all that trouble, then do it properly.

- upgrade your current alternator or add another one.
- 2 dry cell sealed batteries. one for the front and one for the back.
- battery isolator.
- 2ga wiring.
- all the appropriate fuses.

From experience, without an upgraded alternator it would be a waste of money. For most people, an upgraded battery for the front would be enough. Spend like 400bux on a yellow top and save the rest for decent wire runs to your amps.

[cxcxcxvcvcvc]

Hey all

Just wondering what will i need to connect a 2nd battery for my ride?

i want it to go in the boot "possible a 4cyl battery? its just for amps only"

a way it can be charged? and connected to the main battery still? i guess ill need some parts for this?

Cheers
Goon

i was going to go down this same route but after a reply to my post & speaking to autobarn i would go the single yellow top battery as recomended and if that dosent work you can always install a dual setup & a later stage

[garfa]

i was going to go down this same route but after a reply to my post & speaking to autobarn i would go the single yellow top battery as recomended and if that dosent work you can always install a dual setup & a later stage

autobahn usually dont know hemmoroids from crunchy nut clusters.

what brings you to the conclusion that a second battis needed, goon?

[Silver surfer]

there is no need for another alternator a dual battery kit will surfice.
and if by yellow top you mean a century battery then yes get one they are top quality and I should know I make them.

[garfa]

optima battery

[Joe Peeps]

what brings you to the conclusion that a second battis needed, goon?

what he said...

[immortality]

you can purchase proper twin battery setup kits, check out repco, i'm sure i've seen em there

[cxcxcxvcvcvc]

autobahn usually dont know hemmoroids from crunchy nut clusters.

what brings you to the conclusion that a second battis needed, goon?

that maybe true mate from where your from but the fellas @ autobarn down at moss street know what there doing!

[kopper69]

The fellas at moss st are just trying to make the sale, like everywhere else. They arent going to offer you a dual battery setup because:

a)They probably know nothing about it
b)They dont have them there to sell

Im not arguing that it worked or didnt work. For some people that little bit of extra juice might be all that they need. But lets make this post useful for the future and suppose someone wanted to run a fridge or something similar or for whatever reason was intent on installing two batteries.

Do you need to upgrade your alternator? Well, no, not always. That will bring a fair bit of cost to the modification. A bigger alternator will just charge the batteries quicker. If you have the cash though, go for it.

One of the best setups I have come across was one published in Silicon chip magazine back in december 06. Havent tried it personally, so cant give you the pros and cons, but its available here Oatley Electronics for $22. You do need to be able to solder to build it, or have a friend who can. There are probably a couple of members here, me being one, that would do it for you if you asked really nicely. It is designed for 12 and 24V use and will charge the main battery before charging the auxiliary battery.

The problem with a straight 2 batteries in parallel setup is that it can easily discharge enough so that you cannot start your car, it will place a big load on the alternator (hence the reason some people upgrade the alternator) and if one battery goes bad, it will bring the other down, again leaving you stranded. There are manual isolating switches in some setups, but unless you remember to switch it everytime, your just going to do the same as above.

This little circuit will do the switching for you. And as it only charges one battery at a time, there should never be a massive strain on the alternator. When you turn the car off, the auxiliary battery is switched on to power your accessories.

This may not be the solution to everyones problems, but if your after a cheap dual battery setup this might be the way to go.

[garfa]

depending only 80a could be a bit of the small side for starting larger engines.