Rocksteadee
Active member
As you check wiring draw it all, it will help with checking and be a useful reference for future problems
Sorry but you cannot have all the batteries disconnected if the Victron is still working.
Disconnect EVERYTHING on all battery positives and test with a voltmeter.
Reconnect one thing at a time, check the current each one draws as you connect. That way you will find out where the power is going.
#How do you know all the batteries are OK if they are not all disconnected so that you can check the voltage of each individual battery?#
Whats this main earthed anode you are talking about? You have a landline connected? You have a GRP hull with earth cables to external anodes?
You are not being very helpful, most of the above is just muddying the waters
Well I'll piss off then and leave it to you bombastic nerds. Don't know why I bother sometimes.
Does the Victron read down to mAs?
Thanks for ideas so far
Just to answer some of the questions:
- I have the voltage and ampage shown continously on my phone with a time graph as well. It's an excellent Victron facility
- I have done no wiring changes to the boat at all other than swap out the old batteries with identical new ones.
- I have individual isolator switches for all 3 battery banks. With them all off and no charging going on the current drain is still there and it takes the voltage down to around 12.6V
Ok, I'm an old dinosaur but I would only believe what I'd checked on the boat with a meter. Other posts have already suggested you check the scale, are you sure its 20A?
There are no scales to check. The monitor only displays amps in the format xxx.xxA
No mA
No .20A, it'd show 0.20A
No 2.0A, it would be 2.00A
etc
Does need checking with a meter though.
Thank you, I was assuming it showed a graph.
With everything isolated except the battery monitor, have you calibrated the monitor in the Victron app?
I agree. Switching on a couple of LED lights and the GPS is enough to pull my house bank (120Ah) down to 12.6V. 20A going out would have it MUCH lower.
I had just realised this myself. So when next at the boat I will disconnect the Victron battery monitor and then do a new setup procedure on it so that it calibrates itself. The manual, which is quite difficult to understand, says nothing about doing this when changing batteries, only for a new install. Fingers crossed...With everything isolated except the battery monitor, have you calibrated the monitor in the Victron app?
Thanks. I imagine it might be sensible to do a factory reset using the buttons on the monitor before doing the calibration...?Battery settings in the app at the bottom
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