Mains on hook up query

[Bustup15]

In Italy and on same site for 5 days which for us is a first.

Mains included so permanently on hook up - set at 5A to ensure we don't trip the pole.

At first hook up charges to 100% and eventually drops down to float setting.

Happened to check the KS battery app this morning and noticed charge is down to 80% and about 1A charge in, presumably from solar. Mains still connected and showing float charge.

If I turn the invertor off for 10 seconds and power back on, normal bulk charge commences again.

Any ideas?

 

[TheCaller]

Can we assume that by 'inverter', you mean a Victron Multiplus inverter/charger or similar?

I don't know a lot about them, but I would suspect that it may not be set correctly for a lithium battery & it's not detecting that the SOC has dropped. If it is trying to do it by voltage sensing, then unless you apply a substantial load to it, a lithium battery voltage won't drop significantly between fully charged & 80%.

When you turn it off & on again, the charge cycle will start again from scratch.

Do you have the Victron Connect app (assuming it's Victron kit)?

 

[Bustup15]

Can we assume that by 'inverter', you mean a Victron Multiplus inverter/charger or similar?

I don't know a lot about them, but I would suspect that it may not be set correctly for a lithium battery & it's not detecting that the SOC has dropped. If it is trying to do it by voltage sensing, then unless you apply a substantial load to it, a lithium battery voltage won't drop significantly between fully charged & 80%.

When you turn it off & on again, the charge cycle will start again from scratch.

Do you have the Victron Connect app (assuming it's Victron kit)?

That would make sense. I rarely use hook up and if I remember correctly I only updated the solar and b2b settings when the lithium was fitted.

I'll have a look when I get a minute to see how easy (or not) it is to update, as access is difficult to say the least!

 

[Bustup15]

Update
Ordered the required usb programmer. Came to programme my Victron Multi 3000 to find that to remove the front cover I had to remove both batteries 1st. Another wonderful example of poor manufacturer planning. Made even worse by 2 of the screws located behind a metal upright support and VERY difficult to get a screwdriver at them.
All sorted now hopefully.