This site is now in read-only archive mode. Please move all discussion, and create a new account at the new Victron Community site.
Have a Color GX Controller and Victron Lithium battery with BMV 702, Smart Solar MPPT 75/15, Multiplus compact 12/1600/70-16
Van is plugged into mains and battery will only charge to 83%.
Controller says last full charge was 17 days ago but its been plugged in all day and night.
Help much appreciated, is this a setting on the color GX where i can go into the menu and change this.
Unit isnt connected to the internet so cant use the online system.
Thanks,
Kieron
Please go into the menu and check the parameters found in the BMV tab, in your case the 702.
What does it tell you there? You should find values in there for max. charging voltage.
If this is not the case, the multi-tab should also display these values.
Battery shows 14.49 V. -0.3A. -4w
Where exactly do i go for max charging voltage
System currently says HUB-1. EQUALIZE
thanks,
the 14.5V should be OK, no need to go any higher. I'm not entirely familiar with the batteries, but afaik they do have a built-in BMS, right?
the max. charging voltage usually is configured inside the Multiplus, which can only be accessed via a USB-to-MK3 interface.
do you apparently have a Bluetooth-dongle for the 75/15? in there, you could also set the max. bulk voltage by taking your phone / laptop together with the victron connect app.
last: as your system already is charged up to 14,5V - this rather looks to me like a little fault with the current shunt, which (in the end) is responsible for your SOC value.
I wouldnt worry too much about this, the batteries appear to be fully charged.
Thanks av1um be nice to show that they are fully charged, give me more confidence as the van is designed to live off grid as much as possible.
is it worth getting the shunt checked out as there are no more settings in the GX unit to mess with?
thanks again
where you might wanna have a closer look at is the 'equalize' status. this actually shouldnt appear that very often. as I cannot find any way to configure this in the MP, this might be coming from 75/15 which does indeed have a setting for that. equalizing is happening automatically inside of your battery - which has a built-in BMS. the 75/15 does not need to ever 'fall' into this state for your type of battery. but for configuring this, you'll need the Bluetooth-dongle.
according to the manual:
3.9 Automatic equalization Automatic equalization is default set to ‘OFF’. With the Victron Connect app (see sect 1.9) this setting can be configured with a number between 1 (every day) and 250 (once every 250 days).
-> have an eye on this, and if this state is showing up way too often, get yourself a BT interface.
I now have a Wi-Fi dongle attached to the color gx. Connected to Wi-Fi but not managed to connect the vrm software to the unit yet. Hoping of I do that might show me some.more info on why it's only showing 83% charge
