Lead Carbon Battery Parameters Set-up for the smartshunt App

DIY
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1

Does anyone know the parameters for the lead carbon battery set-up in the app? They are not shown on the battery data sheet for some reason. Such as:
Discharge floor
Charged voltage
Peukert Exponent
Charge efficiency factor
Current threshold

2

Have you tried opening Victron connect, choosing demo library, then selecting the shunt and the relevant profile?

3

Thanks. Just tried it now, but there’s no way to pick a battery. Not sure if lead carbon fits the default values

4

Discharge floor 50%
Charged voltage, 0.2V below absorption voltage set on chargers
Peukert, try 1.15
Charge efficiency, try 95%
Current threshold, leave at 0.1V default.

The above are based on them being AGM leisure battery type lead carbon, not the deep cycle type, I have no experience with deep cycle lead carbon.

5

Thanks. I don’t think they are the deep cycle type.

6

@PeterWilliams When charging, if towards the end of charge the battery SOC jumps from 95-99% up to 100% you can decrease the tail current a bit, I have mine down around 1.5%. If that does not solve it then increase charge efficiency. You can get it set quite well but it needs a few charge cycles to get the settings perfect.