Batteries are being overcharged by All-in-one Inverter

[KolinCancer]

Im having a multiple issues w my inverter. ill start w the issue of my inverter overcharging my batteries. it will fully charge the batteries then get the voltage over 60 i believe disconnect and cycle like that until i kill the solar. this only happens w solar. if i use my generator itll just get them to 100% and then stop charging them. my batteries and inverter are bmsed. im not sure how to fix this. ive attempted to reach out to the manufacturer but they are awful w customer service.

Generator:
Generac Guardian 24kw

Page Not Found | Generac

page not found

www.generac.com

Inverter:
PowMr 10KW 110/240Vac 48Vdc Hybird Inverter Charger

10KW 48Vdc Hybrid Inverter 110/240Vac Split Phase

10KW 110Vac and 240Vac Split Phase Hybrid Inverter Charger for 48V batteries ensures a stable and balanced power supply.

powmr.com

3 LiFePo Batteries:
CloudEnergy 51.2V 150ah

CL48-150B

Nominal Voltage/Nominal Capacity: 51.2V/150Ah UPC: 705509815000

cloudnewenergy.com

10 Solar Panels:
4000w of 400w Qcells in series
Datasheet:

https://us.qcells.com/wp-content/uploads/2023/06/Qcells_Data_sheet_Q.PEAK_DUO_BLK_ML-G10_series_385-410_DA_2023-01_Rev03_NA.pdf

 

[Mattb4]

What voltage settings for charging are you using? Also what is the amperage settings for PV and AC in charging.

 

[KolinCancer]

due to the batteries being bmsed i cant alter most of the settings. with solar and gen together amps is set at 200. solar is set at 120. the rest of the settings are 57.6v i believe for the float absorbtion etc. i havent found a particular solar charging setting besides for the amps. on my inverters page is the manual.

 

[Checkthisout]

due to the batteries being bmsed i cant alter most of the settings. with solar and gen together amps is set at 200. solar is set at 120. the rest of the settings are 57.6v i believe for the float absorbtion etc. i havent found a particular solar charging setting besides for the amps. on my inverters page is the manual.

Nice screen name.

 

[KolinCancer]

Its better in video games. when i get on a killing spree or a double kill

 

[HighDesertOffgrid]

due to the batteries being bmsed i cant alter most of the settings. with solar and gen together amps is set at 200. solar is set at 120. the rest of the settings are 57.6v i believe for the float absorbtion etc. i havent found a particular solar charging setting besides for the amps. on my inverters page is the manual.

Lower your float to 55.2. See if that helps.

 

[KolinCancer]

these are my settings. https://photos.google.com/share/AF1...?key=empXQjByM1IzZ25WRktFN0R0UFgzWkZ0c3pydDFR

 

[KolinCancer]

Lower your float to 55.2. See if that helps.

anytime i try and change my float setting (58.4) it automatically reverts back.

 

[TomC4306]

Ok ..

You need to either read the manual yourself, CAREFULLY, and change the charge voltage ( bulk/absorption to 56, float to 54) OR contact the manufacturer and ask how to change these settings.

The all-in-one is not overcharging your batteries because it wants to. It's being told to.

 

[HighDesertOffgrid]

You need to either read the manual yourself, CAREFULLY

This.
There may be an access code necessary to modify settings.

 

[timselectric]

With closed loop communications (AIO to BMS).
You can't change the charging settings. You have given the control to the BMS's.
It is what it is.

 

[KolinCancer]

but why will it overcharge w solar and not w the generator.

 

[KolinCancer]

Ok ..

You need to either read the manual yourself

ive read that manual 100 times and tried to reach out to the manufacturer neither have helped thats y im reaching out here.

 

[HighDesertOffgrid]

You have given the control to the BMS's.
It is what it is.

The bms' have a charging protocol?

 

[Mattb4]

but why will it overcharge w solar and not w the generator.

Your solar at 120a max ( if it is achieving it) may be pushing a cell too high and causing a trip of the BMS. When that happens you can see a high voltage spike at your inverter. This seems to happen more frequently with a brand new liFePO4 battery bank that might have unbalanced cells. A way to avoid that is to set a lower bulk voltage by switching your battery type to User over using a Battery type setting that relies on BMS communication.

Run with conservative settings like 56vDC for awhile and see if it helps you.

 

[Partimewages]

@sunshine_eggo
Has a Powmr he's been experimenting with.

 

[KolinCancer]

Your solar at 120a max ( if it is achieving it) may be pushing a cell too high and causing a trip of the BMS. When that happens you can see a high voltage spike at your inverter. This seems to happen more frequently with a brand new liFePO4 battery bank that might have unbalanced cells. A way to avoid that is to set a lower bulk voltage by switching your battery type to User over using a Battery type setting that relies on BMS communication.

Run with conservative settings like 56vDC for awhile and see if it helps you.

ill give it a try. what would you reccomend i set for each setting? would u say i should go w straight user or the l16 option and customize from there?

 

[KolinCancer]

@sunshine_eggo
Has a Powmr he's been experimenting with.

ive reached out thank you

 

[timselectric]

The bms' have a charging protocol?

They control the parameters (settings) of the charging.

 

[Mattb4]

ill give it a try. what would you reccomend i set for each setting? would u say i should go w straight user or the l16 option and customize from there?

A fellow that knows a great deal more than me about LiFePO4 batteries would be the person to consult @Steve_S
Likely you can find his recommendations if you search as he has posted them many times.

 

[shvm]

anytime i try and change my float setting (58.4) it automatically reverts back.

There should be two settings:
One labelled charge/bulk and second labelled float:
Try bringing the charge/bulk voltage down to 56.4 V.

 

[Quattrohead]

You have not specifically said if you are using communications or not but I would advise not to and set your charge and float voltages to 55.4 and 54.4 respectively.

 

[Brucey]

You have not specifically said if you are using communications or not but I would advise not to and set your charge and float voltages to 55.4 and 54.4 respectively.

Yup disconnect the battery comms so you have control of all your settings again.

 

[shvm]

Yup disconnect the battery comms so you have control of all your settings again.

Unless you specifically know how to change your inverter settings back from Lithium COM to Lead-Acid, don't attempt this.
This will just turn off power to your loads if Grid is absent and the AIO will throw battery error.

 

[KolinCancer]

Ok ..

You need to either read the manual yourself, CAREFULLY, and change the charge voltage ( bulk/absorption to 56, float to 54) OR contact the manufacturer and ask how to change these settings.

The all-in-one is not overcharging your batteries because it wants to. It's being told to.

Tried what u said. Still over charging without bms. Ive told it to not charge it to 59.9v (56.4v is what i told it to do to b exact) and it still does it. So maybe now u could offer some advice rather then read the manual or contact the manufacture because powmr is garbage. Ill include a video as well