Gen3 5.12kw battery

GivEnergy Products GivEnergy Batteries
1

HI
I have a G3 5kw inverter and a Gen3 5.12kw battery at the ,moment the solar is charging 2.7kw but the battery is only charging to 1.6kw home is using 331watts and sending 634 watts to the grid
why does in not charge the battery to 1.9kw if that is the difference between producing and charging. any ideas i have checked all the setting i can see and cant see that i can change anything
any ideas let me know
Darren

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2

What is the temperature of your batteries ?

Cold will effect the rates.

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3

Battery is 18Deg

4

So other things to check

  • Is the battery 80% or above - charging slows down as it gets fuller
  • When was the last time that a “SOC” was done ( full charge/discharge )
  • Have you checked in the APP to confirm that you are charging at full power ( mine is 3600kw MAX )
  • Are you at the latest firmware on both battery and inverter
5 
Is the battery 80% or above - charging slows down as it gets fuller   BATTERY WAS 59%
When was the last time that a “SOC” was done ( full charge/discharge ) SUNDAY NIGHT (23RD)
Have you checked in the APP to confirm that you are charging at full power ( mine is 3600kw  MINE IS ALSO SET TO THIS 
Are you at the latest firmware on both battery and inverter YES LATEST FIRMWARE
6

Your battery charge rate is affected by temperature, and if the CELL temperature is less than 20 degrees it will charge at about 1.7kWh as you’ve found.

This image was previously shared on the GivEnergy facebook group:

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image752Ă—350 88.7 KB

The slowdown is most pronounced on smaller batteries and higher charge rates.

If the temperature drops below 10 degrees the charge rate drops further, and at zero it stops charging completely.

There are some improvements to this de-rating apparently coming in future BMS 3018 version, but don’t know when this will be released. In the meantime, if possible you might consider wrapping the battery with insulation.

Once the battery temperature rises above 20 degrees it will return to full rate charging.

I see this happening on my own 5.2kWh battery

7

Hi

Thanks for this makes sense

Cheers Darren

8

I am lucky not to be effected by this as I have 2 Batteries… so each one get 1.7kw ( 3.4kw total ) and the inverter can only do 3.6KW max anyway :frowning:

The extreme thing to do now is buy another battery :slight_smile:

9

Yeah thats the plan should have gone for the 9.5kw so now saving for the next battery :joy:

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There is also a slowdown in charge rate as the battery SoC % approaches 100%.

I believe it starts at 90%, but certainly from 95% onwards I have seen the charge rate reduce to 950 W and 475 W on my 9.5 kWh battery.

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