which dual battery set up is best

[rusty_042]

hey guys i am getting a dual batter kit next week for my rangie but when i went looking i was told i should get a protector kit, im not so sure have never her of it an for $25 less then the pirana kit, im looking at it an can see why ppl are buying em
here is the kit wombat offroad are selling i think looks like it anyway
http://cgi.ebay.com.au/Dual-Battery-Sys ... otohosting

i was also looking at the dbe 189s kit from pirana offroad
http://www.piranhaoffroad.com.au/produc ... DBE180.htm


whats your thoughts ??

[me3@neuralfibre.com]

http://neuralfibre.com/paul/?p=37

Should answer your questions.
There is a spreadsheet with costs and efectiveness.

Can you fit 2 full size batts in the Rangie?

Paul

[rusty_042]

yer mate can fit 2 full size batterys i am currently runnin a standard 5ltr commo alternator but will be upgrading as im gonna be runninn roof lights sound system an winch plus fride n accessories

[Tiny]

the wobat kit looks pretty good, buy it and let us all know what kind of quality etc it it

[rusty_042]

yer i donno i dont wanna waste 290 on a kit thats only 100amps also i havent met anyone who has used it b4

[me3@neuralfibre.com]

To summarise what I worked out (all on the URL I gave earlier)

Biggest AGM you can fit + Biggest Standard Batt you can fit + Traxide Isoalator gave most Ah/$

Reason is Traxide lets you use 50% of the start batt for accessories, further upping useable capacity.

Other system calcs are all on the spreadsheet. 90% of isolators in the $100 - $250 range are just a relay in a box.

Paul

[rusty_042]

yer mate that went straight over my head when it comes to electric i have no idea i can rebuild a motor easy n trouble suit most mecanical but when it electrical i have no idea

im lookin at ocasional use but while running ill be drawing lights audio n fridge

when im winching it will be main lights an winch only

[drivesafe]

Hi Rusty, if you are planning to use both batteries while winching, you will need a marine battery switch or a heavy duty 200 amp continuos rated solenoid to join the batteries together while winching.

There are no dual Battery controllers that can satisfactorily handle the sort of currents that are required, for long periods of time, while winching.

Some are rated at 250 amps but you would need to check to see if this is a continuos rating or just one that is suitable for starting off the Auxiliary battery if the cranking battery fails.

Cheers.

[rusty_042]

hi drivesafe im going to have the car running while winching an only headlights on so i think ill be running winch of second battery

as i have a capacitor on side of the sub box so can run a bit extera

would i still need a continuious one?

[drivesafe]

Hi Rusty, the usual way to run a winch is to power the winch for 60 second and then let it rest for 90, while the motor recharges the battery(s), then power for 60 seconds again and so on. The problem is that most solenoids will tolerate high currents like this for only a few seconds, which is fine for jump starting off the auxiliary battery but to pull 200 plus amps for much more than a few seconds will overloading the contacts and stuff them.

Just be careful of the solenoid or what ever, that you use and make sure the current rating for that device is rated as a continuos and not as a maximum.

If it is rated as continuos then you can run it all day but if it is a maximum, that could mean anything but usually only means a maximum surge, which is pretty useless for your intended use.

Cheers.

[me3@neuralfibre.com]

In that case do exactly what is on teh Traxide website - buy the 80 amp isolator, the biggest AGM battery you can fit (has to be keep coolish) and your normal battery. Go to a marine shop and buy a battery switch.
Normally run just the isolator. When you want to winch, parallel the batteries with the switch. I think there is a wiring diagram on the Traxide site from memory.

[GRINCH]

run the winch off the main battery, unless your doing whinch challenge etc, where you need high speed. weve fitted heaps of battery systems with a redarc smart solenoid with no problems. very simple to install. its basicly a solienoid with a voltage sensor to activate it when the main battery is charged. it also has an override feature that allows you to link the 2 batteries to start when the main one is flat. they retail for about $130-$140 for the solenoed, plus tray and cables. i wouldnt waste my money on cheap chinnesse stuff as it usually lets you down in the middle of no where. issolator switches are a cheaper option, but the require you to rember to turn them on and off when needed.

[rusty_042]

well for the moment im just gotta run the piranna kit as i think im not gonna need a hard core system like these i think lol.

ill see how it goes if it doesnt suit ill chnge to a boat one an chuck this one in the commo as it can at lease be used for the moment