Credit where credit is due

G'day Des,
How's the 50 going???? hahaha

So, what is/was the cause of the voltage drop in your 2 batteries if it wasn't caused by the isolator?

Cheers

Roachie

Interesting - I have the same on my 99 TD SE Jack - I put it down to the security circuit - guess it chews a bit of energy while keeping tabs on the car.

Des (and others)

I don't think anything is amiss mate.
According to a chart I have, 12.7 volts = 100% charge, so anything above that is due to the charging effect. The slight drop is probably only surface charge.

Check again in a day or two's time to see if the voltage continues to drop, or whether it has stabilised.

Thats a hard one...whats got access to both batteries???
Id think first that one might be on the way out...but it shouldnt make the other drop off....r u sure u dont need new batteries in the tester...lol
One way to check for sure is to remove the earth to the aux after running and seewhat happens then after a few days!
Andrew

Had an old mate drop in last evening ,who had just recently bought himself a 92 Nissan poverty pack diesel patrol ,came fitted with dual low maintenance batts ,controlled thru redarc , told me that last 3 mornings could not start vehicle unless tapped starter motor with hammer ,I checked batt voltages , main 12.78 ,aux 9.12 = 1 stuffed batt and 1x redarc NOT disconnecting aux at shutdown ,batts equalising at shutdown leaving 2x flat batts ,,disconnected redarc ,jump started main batt from cruiser , let nissan idle 20min , main batt back to full volts ,, phoned this morning ,started 1st kick ,
your REDARC probs
Willems REDARC failure
My mates REDARC failure

Ill stick to my ROTRONICS .!!!!

congratulations on your new job des.
now we all know a bloke who works at redarc(you) will we get a discount.
lol
cheers mate