GivEnergy 9.5kWh Battery Storage Unit with 3.0kW AC Charger

sirpatchuk

We have this setup;
GivEnergy 9.5kWh Battery Storage Unit with 3.0kW AC Charger

I have setup force charging during our off peak hours which are;
0400-0700 (3 hours)
1300-1600 (3 hours)
2200-0000 (2 hours)

If I set it to 100% charge then (as you can work out) it will be charging the battery at more than 3KW an hour.

There have been occasions where this has happened. On these occasions the GivEnergy battery has switched itself off.

GivEnergy cannot help.

I am assuming (maybe wrongly) that it is because it is trying to charge the battery over 3KW, when the AC Charger is 3KW max....

Any thoughts / ideas to assist?

admin

sirpatchuk If I set it to 100% charge then (as you can work out) it will be charging the battery at more than 3KW an hour.

There have been occasions where this has happened. On these occasions the GivEnergy battery has switched itself off.

This seems odd. Are you saying your inverter charges at a higher charge rate than what your battery can cope with?

What is your WattID please, so we can validate this for you?

admin

sirpatchuk We can see we're not trying to instruct higher than 3kW max when charging.

We actually snapshotted 1333W charge rate prior to your 04:00-07:00 schedule and reset it back to 1333 at the end.

sirpatchuk

Sorry. Where can I find my watt id?

admin

sirpatchuk Above the version number in the navigation menu or at the bottom of the Advanced section/page.

sirpatchuk

remarkable-list

sirpatchuk

admin

I wonder why, in circumstances where I am trying to charge it from low % to high % it switches itself off?

admin

sirpatchuk How cold is it? Is your inverter/battery combo outside or such?

sirpatchuk

No, it is all inside

admin

sirpatchuk I presume you can reproduce this without Wonder Watt as well, ie. via the Giv app or web dashboard?

If you can, it may be worth picking this up with Giv support.

sirpatchuk

admin

I haven’t tried.
It’s happened about 4 times in 3 months.
I changed the settings to charge it to 75% instead of 100% and it was fine.
Until the other night (19/01) when the battery went down to 5%. The 2200 hour charge is to 65% and that’s when it switched itself off.
It was only then that it thought it must be the AC 3KW limit as I was asking it to charge the battery to over 6KW in 2 hours when it physically can’t do that….

admin

sirpatchuk It was only then that it thought it must be the AC 3KW limit as I was asking it to charge the battery to over 6KW in 2 hours when it physically can’t do that

We don't ever set it higher than your max of 3000/3kW - and if we did or attempt to, Giv will just assume inverter max.