Hello :wave: Have you adjusted anything yet … The ‘Charged Voltage’ voltage of the shunt is not correct … The voltage that the battery has when it is charged should be entered here. That’s why the shunt is already at 100% and will certainly also inform the Mppt of this via the SmartNetwork …

When the battery has reached the required charging voltage and must have held it for a while for balancing to take place, the ‘tail current’ drops to a small value … because there is simply nothing more to fit into the cells … this is the value and the time you need to enter here. You can only do t…

[image] toffifee: Hey you🙂 I have followed the settings in the smart shut manual for the lithium battery. The only thing that I couldn’t change was the tail current. I don’t know how to do that. I thought we had been through this, the FAQ is the best advice for the charged voltage, set it to …

Kinda same help needs here. I am stucked on 13.35-13.4V for 2 days now. SOC says it’s on 100% but the battery came with 14.1V when I installed it into my system and it seems it will never reach again that voltage. Some screenshots…maybe I just not patient enough or maybe someone will spot what’s th…

You mean a charger like blue smart 12/30?:thinking:

Still don’t understand. Not a single word. Never mind. @Netrange will take a little time to teach me.

Just set it to 14.2V for charged voltage. It will work.

Smart shunt setting, battery setting, charged voltage setting, 13.2V to 14.2V?

Solar charge. From previous discussion your battery spec had an absorption voltage of 14.4V. You currently have 14.2V because you have chosen the default setting for Victron batteries. Press the expert button then you can increase this to 14.4V. SmartShunt Charged Voltage should be 14.2V. This is…

[image] pwfarnell: Solar charge. From previous discussion your battery spec had an absorption voltage of 14.4V. You currently have 14.2V because you have chosen the default setting for Victron batteries. Press the expert button then you can increase this to 14.4V. Solar charge, battery setti…

13.5 is a perfectly safe voltage for lithium float. It may allow the battery to discharge a bit, perhaps 90% rather than keeping it totally full. See how it works, if once it goes to float all current comes from the battery and the battery discharges below 90% increase it a bit.

SmartShunt showing 100% when battery is not fully charged

DIY

pwfarnell 27 December 2025 22:23 15

Read this FAQ then set your charged voltage on the shunt to 0.2V below the absorption voltage, something like 28.0 or 28.2V then it will only synchronise when it truly gets to absorption and the battery is full.

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SmartShunt showing 100% when battery is not fully charged

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