Hi to all . Not a big poster but a keen watcher. Apology for the long lead in to the question)
I have a iveco van set up as a service vehicle and overnight bed all in one. From the waist down it is full of
tools etc and above that is a bed , fridge, fan ... good enough for my travels. Currently has dual batteries ( previously set up and
well set up i think)... large crank battery and 120 Ah house battery. Redarc sB12, with two VSRs, remote overide for starter and an AC 20 amp Charger.....a 100 amp main fuse and individual smaller fuses on each circuit. ( note not an SB12D dual sensing,,, thus two VSrs???) anyway system was working
well in both 12v and 240 volt mode with only long periods at idle shutting down the draw from the second battery ( 75 litre vitrifrigio doing an efficient job now i have insulated it.) BUT...... ( there is always a but)
the SB12 has given up... as no more red light and no clicking of the solenoid... Age could be the culprit , but i could also be the problem, as recently i started using a small portable electric winch to haul my small car aboard its trailer.,,, i attached it directly to the house battery and disconnect immediately , and all up winching is probably two minutes.
My question
How best to wire in a winch to this equation with a possible draw of 70-135 amps (using winch load data and it is only a 600kg racecar)
and if i chose to replace the SB12 with a SB12Dual sensingor similar would i need the vsrs ( they may or may not be working i have yet to
test)...
I don't want to spend a fortune, but do want to protect the circuitry. I was thinking remove the VSRs, add a SB12D either 100 or 200D or similar and have a marine type continuous rated isolator switch between battery and winch solenoid> Thoughts appreciated. Anything simpler Would a super large anderson connection be a possibility to the trailer ? (For those who could suggest a simple human powered winch- my problem is sometimes the racecar is not on all wheels-
Disclosure: I don't see a need for a Dc to DC charger, i have a big alternator, some reasonable travel time and am used to trickle topping up all batteries between outings and have several good quality multistage chargers to share around. Cheers Darryl