Bongo Fury

hi guys,help! on my leisure battery set up i have the usual split charge relay set up
with a volt sensing relay,so as not to have to connect anything to the alternator.
my problem is i keep getting a flat starter battery,when i took a look today i
noticed that the green led on the volt sensing relay was lit constantly,with no
key in ignition.is this the norm as i thought the led should only be lit when
the switch between the two batteries had been made to indicate that the leisure battery
is being charged.cheers tay.

vsr could have a fault its been fitted for almost a year with no probs untill
this recent cold spell.i never took any notice if the light was on or off when
i first fitted it and im pretty sure i wired everything up correctly.is there
anyway to check the vsr for a fault?

you can check to see if there is a voltage going back from the vsr to the starter battery, disconnect the wire going from the sb to the vsr and use a multimeter. it depends a lot on the model of vsr you have but as said usually the the vsr shouldnt allow a voltage to go back to the sb. have you put on a new sb or is it still original. a cold spell is enuf to kill a battery.

Measure the current from the relay flowing into the L/B. It should only start once the engine has started and the S/B voltage has exceeded the voltage the relay is set for. Without details of the relay I can't say what that will be, but you would expect a few seconds from once the engine has started at least.

thanks guys will try tomorrow

good luck hope that you get it sorted out

Hi Tay,
check the voltage on both batteries if you have the Exact reading on both,you probably have a relay problem.
Disconnect the relay,and try it for a day or two.

Cheers Mal..

hi guys quick update,relay is ok,started engine led on vsr comes on,turn engine off led stays on for
about 2-3 minutes then goes off. i think it was just me being impatient.going to get battery
checked as i think this is the culprit with only a 75ah rating and recent cold weather
i think its kaput.thanks for help,tay.

I have a 110Ah starter battery and my Bongo has been starting better than my Jeep Cherokee with its 75Ah battery. We have had overnight temps in the Scottish Borders down to -5°c over the past week.