Charging phase relative to SOC

[monzer]

If my batteries are down to say 86% SOC after a day and a half. Shouldn't any solar that's trying to go in be on bulk instead of float?

Or is that not how it works?

I seem to struggle to get SOC as displayed on shunt back to 100%.

180Ah batteries with 260 W worth of panels.

It's definitely putting power in but sometimes I think not as much as it should be.

 

[bigtwin]

Try briefly switching on a large ish load. That might kick it into bulk mode.

Ian

 

[monzer]

I managed to get my victron shunt and mppt talking to each other via the VE networking tool on the app and it looked promising:

the solar started to see the battery wasn't as charged as it thought so started pumping more solar power into them (see the 2 days ago input in pic) but then something happened and it started reading a new day. The yield from '2 days ago' was actually yesterday and I'm getting false min battery levels now and my mppt is stuck giving in only 3W of power even though I'm at 85% SOC and lovely sunny day.

Battery power seems fine, everything working as it should.

Anyone any ideas what has happened?

 

[Diabalo]

My Victron MPPT solar charger gets it knickers in a twist the same as yours, sometimes it should be bulk charging but stuck on float and the days for 24 hour history doesn't start at 12 midnight, I don't know when the 24 hours start as as far as I'm aware it doesn't have a clock built in, I suppose it could be at sunrise when it starts the next days cycle.

 

[monzer]

My Victron MPPT solar charger gets it knickers in a twist the same as yours, sometimes it should be bulk charging but stuck on float and the days for 24 hour history doesn't start at 12 midnight, I don't know when the 24 hours start as as far as I'm aware it doesn't have a clock built in, I suppose it could be at sunrise when it starts the next days cycle.

The MPPT used to think the battery level was a lot higher than it was hence why it was on float a lot. But I seemed to have fixed that by enabling VE network.

Straight away I was getting 125w of solar in to my batteries. But no idea what is happening now. Its bright sunshine outside yet stuck on 3w of power

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[Diabalo]

I only have the controller so no networking possible and now been thinking while sitting here on the banks of the Loir fishing thinking about it further mine may be down to Auto-Trails smart charging, with it enabled it charges the hab batt for 4 hours then switches over to the cab battery and that must confuse the controller no end.