Victron battery monitor 712 help

[Bigfoo171]

I’m no sure if I have my Victron battery monitor configured the right way why I say this is because the app is telling me that I only use 94% at of my battery but my battery voltage is saying I use 60% of my battery here are some pictures to show you what I’m talking about by voltage any and all help would be helpful

12.20 = 60%
Victron saying the battery voltage is 12.20 at 94% I have 575 usable amps total

 

[chrisski]

Couple things.

Did you program on the total Battery AH?

This 60% voltage, is it measured during a high wattage draw, or soon afterwards? IME, you need to let the battery rest a while with no draw to get an accurate measurement off voltage.

Another thing could be the zero current. If that was set at a two or three amps, that might effect the battery. I have four golf cart batteries for my 35’ fifth wheel. Seeing only .12 amp draw would be unheard of for me. The parasitic loads like the .5 amp propane fridge and about the same for my stereo system when its off, getting less than 1 amp is unusual.

 

[Bigfoo171]

Yes I programmed it 1150 ah

 

[Bigfoo171]

0.12 Draw or load is the charge controller

 

[chrisski]

Since I have an ahmeter, my next step would be to measure the parasitic draw by clipping the ammeter over a wire. .12 seems real low. If that didn’t work, I may try the multimeter that has a 10 amp limit.

Is it really just the charge controller hooked up now and nothing else?

I found my inverter was drawing one amp, my stereo when on about 1.5 amps, my propane fridge .5 amps, which with 14 hours of no sun really added up. Even found a couple of old incadescent bulbs pulling 2.5 amps that I swapped to LEDs. I came up with around 25 AH of power, which was about 20% of my daily usage was from these parasitic loads and shutting the stereo off, changing the bulbs, and shutting the inverter off when not I use saved me those 25 AH.

 

[Bigfoo171]

My inverter is turned off. Connected right now is the charge controller and it’s one of those EP ever 40 amp charge controller

 

[LanduytG]

You have to be sure and set the full charge voltage. Then once it reaches that point be sure to sync it with 100% charge. If these steps are not done it will not give you the right reading.

Greg

 

[HRTKD]

My BMV-712 needed a couple charge/discharge cycles to get synchronized. There is a manual process to do that. It's in the manual, but I didn't need to go that route.