Low battery alarm with full battery

DIY
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1

Hi I’m a beginner with solar stuff and a little bit of help would be much appreciated

I have 1200w solar , 24v 280ah Fogstar , victron charge controller and Victron 24v 3000 inverter.

I bought a new fridge(60w) three weeks ago plugged it in , everything was fine up until Last week when I decide to move it.
Then it would switch off when going below 50w on eco mode but wouldn’t come back on .
On and off a few more times and now it trips the inverter straight way after turning it on saying low battery .

Charge controller is saying battery is going from 27.1 to 14.1 when plugging fridge in but multimeter and Fogstar app says the battery is staying at 27.19

As of now inverter trips with no load

Anybody have any clues pleeeeease

2

Poor connection somewhere between the battery and the inverter. Check every connection is tight, no loose or frayed cables, fuses OK, isolators OK. Use your multimeter to check for voltage drop when you have some load on the system. For an isolator if you measure the voltage on the in and out sides you should see perhaps 0.1V difference, if it is making poor contact you may see several volts difference. Again with liad on measure between the battery + terminal and the inverter + terminal, they should be close. Do the same for the battery - to inverter - to see if the voltage drop is in one side or the other. Basic electrical circuit trouble shooting.

1 Like
3

Thank you for your help . I will try this