Oddities with new HY5 gen3 / 9.5kWh - charging rates

4 comments started 2023-11-06 last 2023-11-10
GivEnergy ProductsHybrid
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#1 DD

inverter firmware D0.302-A0.302, battery 3009

Couple of unexpected behaviours:

  • for overnight charging, I was under the impression that if the battery level was above the requested target setting, then the battery would continue to discharge until it reached that level. Instead, mine just seems to pause, neither charging nor discharging. There's one example in post 18 in https://community.givenergy.cloud/d/3407-regularly-charging-to-100
    Another example from this morning: configured to charge to 32% between 00:30 and 04:30, but the battery was at 35% at midnight. Rather than discharging to cover the base load, it just stopped. I wasn't charging the car last night, so no significant loads added at 00:30, until the immersion at around 03:40

    I assume the bumps are fridge or freezer cycling.

  • Is the battery power supposed to affect DC charging, or only AC charging ? I was setting overnight charge rate to 1kW or less (since that gave it plenty of time to charge), but I forgot to increase it first thing in the morning. (I'm still doing things manually at the moment.) So I was surprised to see that solar was charging at more than the limit I'd set.
    And just trying the "pause" feature on the app today, it completely ignored it, and continued charging the battery from solar. I'm guessing it's implemented internally by setting the charge power and discharge power to 0, but again, DC (solar) charging appears to ignore the setting.

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#2 DD

Pause also has no effect on discharging

Ah - the portal is now offering me an updated firmware - I was thinking that D0.302-A0.302 seems quite old. Tonight's probably a good time to do the update since I didn't put enough juice into the battery overnight, so it's probably going to be running low anyway.

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#3 DD

Update seems to have gone okay. Now on D0.305-A0.305 + 3012, but the pause still seems to be broken.
Ah... on the portal, in the remote control section, if I unhide "dangerous" registers, I see there is also a pause start and end times. They were both 00:00. As an experiment, I set them to 09:30 to 09:40 (now), and lo and behold, the pause did take effect. So it seems that in order for pause to work from the app, I'd need to set a valid pause window - 00:00 to 23:59, I guess.

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#4 DD

And the problem of not discharging down to the target charge level overnight is also fixed 🙂