Off Grid House Power Monitoring

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NectarBomb

25 posts

Geek

#263312 16-Jan-2020 09:30

Hello GZ,

So I have a house that is off grid. We have have a MPPT controller which can display the voltage of the batteries, the amps coming in from the solar array and the amps going to power the house. This is all shown in real time however does not show the cumulative amount I have gathered over the day.

I was wondering if anyone is aware of any products that will allow me to track the amount of amp hours coming in and going out over a day for 12 / 24 volt systems

Extra points if it has some kind of ip way to monitor it on a computer.

Cheers in advance.

tripper1000

1618 posts

Uber Geek

#2398763 16-Jan-2020 10:36

What model MPPT controller do you have?

I ask because it is increasing common for MPPT controllers to have external data ports and the app's that go with them usually reveal a lot more data than the inbuilt LCD screens. Many models have wifi, B.T, serial and USB adaptors available.

I got the Bluetooth adaptors for my cheap MPPT's and the associated smart phone app logs/tells you data like daily/monthly solar production min/max battery voltages and so forth.

NectarBomb

25 posts

Geek

#2398769 16-Jan-2020 10:49

Thank you for your reply. This is the device I have.

https://www.jaycar.co.nz/12v-24v-30a-mppt-solar-charge-controller/p/MP3735

tripper1000

1618 posts

Uber Geek

#2400589 17-Jan-2020 11:22

Oh, those are old tech and a little overpriced now days.

I was hoping you had something like this which would have done what you need:

https://www.trademe.co.nz/motors/caravans-motorhomes/parts-accessories/solar-panels-accessories/listing-2484576795.htm?rsqid=ef3570326f254b29a684813ac863078e-002

A cheap and cheerful solution might be add in one of these (no connectivity though).

https://www.trademe.co.nz/business-farming-industry/industrial/electrical-equipment/gauges-meters/listing-2484473944.htm?rsqid=c1d62588960c4d3fafc6af000e6654cb-004