EP600, How to limit SoC max value while PV-charging?

Product Discussion BLUETTI EP Series
1

@BLUETTI_CARE

I have currently set the SOC values to 25% - 85%. However, since the last update I have noticed that when charging via/only with PV, the SoC reaches 100% and no longer stops at SoC max.
Previously, I was able to achieve the SoC values (even when charging with PV) by activating “charge from grid” and “feed into grid”, but setting the values for input/output current to 0A.
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Currently, the SoC max value is still ignored. I think it is better for the service life of the batteries, if they are only charged up to 80%.
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How can I reactivate this (as it worked before)?

2

Hi @SigiKa

are you sure that it worked befoure? I dont own a EP600, but to my knowledge, the SoC Parameters doesnt apply to PV charging. Atleast when i saw this topic the last time.

greetings
Erik

3

Hi @Selfmadestrom

yes, I’m sure, it worked before.
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However, only with the workaround that “charge from grid” and “feed into grid” are switched on.
I have set the schedule to off and the current to 0A so that nothing goes to/from the grid and charging only takes place via PV.
The PV charging stopped at the SoC max value. PV charged up to SoC 100% without switching on “charge/feed grid”.
I’m not sure if it was a feature or a bug, but I found it quite useful, especially for not always bringing the battery to 100%. Which won’t be possible for the next 8 to 10 months without this feature.
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greetings
Sigi

4

@SigiKa I have confirmed with our technicians that the SOC high setting cannot limit PV charging. It will always charge when there is PV input, so as not to waste energy.

5

It sounds like a good additional feature would be adding a Maximum Solar Charge Percentage for when long-term battery health is more important than using every bit of solar power.

1 Like
6

OK @BLUETTI_CARE , thanks anyway.
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I would like to join @JayCharges here, please add it to the “wish list” for the developers and add an additional feature for extra SOC Max for PV limits.

7

@SigiKa @JayCharges Thanks for your opinion. I will give feedback to our R&D department for evaluation and hope this feature can be implemented as soon as possible.