Calibre question

The redarc isolator does the same till the voltage drop after a while.!!

Hi Merv,
I had the same problem with my Calibre and then I got a Redarc. Guess what, it did the same thing. Just the nature of the beast.

The LED will stay on indicating both batteries are connected together till the battery voltage in the start battery drops to the cutout voltage.

To overcome this I removed the sensor and hooked the solenoid up to the ign switch so that the two batteries are only connected when the ign is on.

Works for me. You really don't need a voltage sensor/cutout then, just need a good solenoid. Many have done likewise, it appears.

Cheers, Bruce.

Gday Bruce,
I got your comment below, but thought best to answer here. The downside to running the solenoid directly off IGN power is that your batteries are being joined whenever you're cranking. With the surge of high current, it's likely to wear out the solenoid contacts sooner rather than later, especially with the 100A Redarc. So I think its best to leave the voltage sensing in the circuit and go with a relay on the earth.

Cheers
Phil

Hi Phil,
That's a very good solution mate.

Will give that one a go. KISS principal, works every time.

Cheers, Bruce.

Phil, this set up has been in the car for some time before I got it. I decided to go with something better as described. Discovered a problem with the calibre as outlined then got a redarc from ebay, could have been old stock, same problem. Went back to the old solenoid and still no probs yet.
But I think I will go with your suggestion as it is simple and you get the best of all worlds with it.

Good one and thanks for the tip.

Cheers, Bruce.