Thread: Batteries

Sill tanks...

Originally Posted by drivesafe

Thanks for the promo Justinc.

Hi 85 county, I have a NEW SC80 and SC80+A isolator about to be posted up on my web site.

The new SC80 is a direct replacement for the old SC80 and SC80-LR. The new SC80 is smaller in size but has the same 90 amp cranking battery to auxiliary battery capacity but uses much less power, less than half that of the old SC80.

Like the old SC80, the new SC80 is designed to protect your cranking battery.

The SC80+A has the same battery to battery capacity as the new SC80, but the SC80+A also has a dedicated 30 amp ACCESSORIES output.

With the SC80+A, you move your accessories from your auxiliary battery to the ACCESSORIES output on the SC80+A and this then protects your auxiliary battery from being over discharged.

85 county, this 30 amp ACCESSORIES output is designed to protect your auxiliary battery so the SC80+A is two isolators in one package and protects both your cranking battery and your auxiliary battery. This is probably what you are after.

so what if i have two different batteries, i think iunderstand that different batteries have different voltages etc, all over myhead in a way

Also if your thingy, charges the second battery off the first battery, thenwhat happens if I switch the batteries around? i.e. the second becomes thefirst, will it charge the other way, or will it go bang or omit black Lucaslike smoke if I do? Will I end up stranded in the never never to die a slow painfuldeath and having fury teeth from drinking my own urine??

Originally Posted by 85 county

so what if i have two different batteries, i think iunderstand that different batteries have different voltages etc, all over myhead in a way

Hi 85 county, and this is actually a myth.

All lead acid batteries have the same State of Charge voltage levels and as such can be paralleled and there will be no problems.

My isolators have been paralleling different types of batteries for more than 20 years now and they don’t cause problems doing so.

In reality, because of the way my isolators work, the auxiliary battery will actually help improve and maintain the charge level of the cranking battery.

As for swapping batteries around, again, as all lead acid batteries have the same State of Charge levels, the only thing you have to factor in is if the auxiliary battery is an ordinary type deep cycle battery.

While you can still safely use an ordinary deep cycle battery as a starting battery to get yourself out of a trouble situation, but to continually use an ordinary deep cycle battery as a starting battery, will dramatically shorten an ordinary deep cycle battery’s life span.

If you think you are going to regularly need to use your auxiliary battery as a starting battery then you should look at using something like an Optima Yellow Top deep cycle and winching battery.

how much???

Hi again 85 county, and the new SC80 is still the same price as the Old SC80, $125 and the new SC80+A, including a fused ACCESSORIES output, is $170 but there is a 10% AULRO discount on these isolators.

My N70 starting battery went high impedance and was replaced last week.

I've now found my 100AH AGM has also died so I'm looking for a replacement. It is mounted under the floor in the spare wheel well. The location was the reason I went AGM.

However, I'm now thinking of replacing it with an identical battery to the starting battery but I'm concerned about gassing off. Do modern batteries gas off that much? Will it be an issue mounting a conventional battery under the floor noting it won't be that well ventilated. I can't see an easy way to vent the compartment to the outside without compromising water tightness.

My batteries are configured through a Traxide SC40 dual battery system.

Minis and VW Beetles/Type 3's had the battery inside, as do the VE Commodores from memory. It should be safe so long as they aren't overcharged. I still remember the sulphuric acid stink in my mate's Mini K when the regulator failed. Evil.