Hereís our setup:
450 with standard LA batteries
, 1 year old. 840ah
Victron Quattro 5000/200/12v
Victron Color Control
2000a shunt wired correctly with all loads coming from this.
My problem since the full electrical
install was done has been the SOC does not read correctly. I actually have been using the battery
voltage for the last year to monitor
state of charge. I know this is incorrect but weíve been too busy enjoying ourselves and travelling to stop and get it sorted. Iíd like to get it sorted finally! Electricity is magic to me so I went for the most simple and easy to use system there is. Everything works great apart from the SOC.
Iíve asked local (Fort Lauderdale) Victron specialists to come out and have a look but nobody is very interested in a small job like this.
My BMV settings are:
1. Battery capacity. 0840
2. Charged voltage. 14.1
3. Tail current
4. Charged detection time. 03
5. Peuhert. 1.25
6. Charge efficiency. 095%
8. Time to go. 03
9. Zero current. Zero
65. Shunt current. 2000
66. Shunt voltage. 0050
These are mostly from the Victron website and recommendations for lead acid batts.
I have had the charged voltage set to 13.5 since the install but after reading yesterday, it says that as we have solar
to set it higher, 0.3v below fully charged voltage of 14.4v. Iím assuming that Iíve in fact not been charging
fully until now.
I plugged in shore power
for 10hrs yesterday and did a full charge to float then unplugged for the night 9pm, so I was obviously expecting some drain over night. I did a Ďsynchroniseí at 100%.
Itís 9am the next day and the BMV says:
Consumed Amp Hours: 24.9 (???????)(this cant be correct?)
Battery voltage: 13.0v
SOC: 98%. (?????) this canít be correct, can it?
Over night we have 4 fans running, the inverter
turned OFF, 1x stainless fridge, 1x stainless freezer
, the toilet pump
run a few times and some LED lights
on for a short period.
We have had a few hours of bulk charging
this morning from the solar and the MPPT
Battery Vmin / Vmax / Imax = 12.31v / 13.38v / 35.5a
Also, the SOC on the Quattro says: 100% (?????)
Can anyone help please?