Trouble charging to 100%

[WesD]

I am having an issue charging my batteries to 100% as prescribed by Will. I live in the Philippines so the brands will probably not look familiar. I have put the specs that are stated from the battery manufacturer into the inverter ( as shown ). During a full sunny day the solar will stop charging at 69% ( as shown ). I am confused as to how to allow my inverter to charge my batteries completely.

 

[WesD]

I apologize. I did not tag @Will Prowse

 

[42OhmsPA]

Are you tracking SOC with a shunt or using the inverter values without BMS communication?

15S, I'd bulk to 53.25V.
Why are you using an equalization timer / setting? I'd disable it.

Deye, are you using the WifI dongle for inverter communications? Don't plug it in if you aren't.

 

[WesD]

I am using the inverter values which I am inclined to believe as I don't have the capacity that I should.

When you say "bulk to 53.25 " under which setting would I put that number?

The manufacturer tech. is the one who told me to enable the equalizer timer function. I'd be happy to disable it.

I am not using the dongle. I am getting the readings straight for the inverter screen.

 

[WesD]

There is not an option to "disable" the equalization timer. Should I put the values to 0

 

[42OhmsPA]

I am using the inverter values which I am inclined to believe as I don't have the capacity that I should.

If you aren't using BMS comms the inverter values are pretty much worthless with LiFePO4 due the voltage curve; that's why I asked about a shunt.

When you say "bulk to 53.25 " under which setting would I put that number?

Absorption, 53.25V = 3.55V / cell in a 15S config.

The manufacturer tech. is the one who told me to enable the equalizer timer function. I'd be happy to disable it.

Let some others chime in on that. I would, I always thought the was for LA chemistry.

I am not using the dongle.

Good. Have you seen the thread about Deyes being shutdown / locked?

I am getting the readings straight for the inverter screen.

Are you able to see individual cell voltages through your BMS? Share what they look like when the batteries are almost "full".

 

[WesD]

I have not seen the thread about the Deyes.

I will be happy to share all the requested when the weather and the time zone difference allows.

Thank you for your input.

 

[42OhmsPA]

Here it is. In summary keep your unit air gapped.

 

[Haysdb]

All these warnings to not plug in the wifi dongle are pure FUD. Unless you're running a gray market Deye in the US, you have absolutely nothing to worry about. Mine is plugged in and its going to stay that way so that I can monitor the system remotely with Deye Cloud.

The advice I got for equalization was to set it the same as float since it can't be turned off, but I've also seen it set to 41v. ¯\_(ツ)_/¯

 

[WesD]

Just an update. After trying many "fixes" this is what I ended up doing. I zeroed out all installed data, then disconnected the inverter from all sources of power. Basically did a hard reboot. I then repowered the unit and reinstalled all of the data needed. As of now the unit is working properly. The batteries are charging as they should be. I'm still not sure exactly what the problem was but I'm pleased with the out come. Thank you to all for your assistance and comments. Merry Christmas