Battery SOC setpoint very low

[Clark Kent]

Thank you for the explanation. And if the optional second battery is present, it is completely outside of the BMS, correct?

That's correct as far as displayed SOC is concerned. The IBS is only on the main battery. The BMS won't be aware of the second battery per se but will sense the current draw of the 120S as a load on the main battery and respond accordingly.
Management of the second battery is done by the 120S hence Ineos call it the battery conditioner. Some owners have fitted a monitor to the second battery to keep an eye on the voltage.

 

[AaronS]

That's correct as far as displayed SOC is concerned. The IBS is only on the main battery. The BMS won't be aware of the second battery per se but will sense the current draw of the 120S as a load on the main battery and respond accordingly.
Management of the second battery is done by the 120S hence Ineos call it the battery conditioner. Some owners have fitted a monitor to the second battery to keep an eye on the voltage.

Awesome, thank you. I plan on doing just that.

Will it mess with anything if I also put a monitor on the primary battery?

 

[Clark Kent]

Awesome, thank you. I plan on doing just that.

Will it mess with anything if I also put a monitor on the primary battery?

No issues.

 

[CHM]

If this is the case, it's a disgrace. A utility off road vehicle should have the option to be able to be fully charged. The battery should be at 100% to meet the needs of the user, not some fuel efficiency trick (which must be minuscule).

I used to laugh about the new Defender running flat and bricking because it couldn't handle a week camping with the doors opening and closing, but I'm pretty embarrassed that my Grenadier won't ever see a fully charged battery.

After my latest service and software update, the maximum SoC has dropped from 82% to 70%. The recharge now drops off to 0A as soon as it hits 70%.

I agree 100%. Ineos can still ad a "Camping Mode" software button which would enable 100% charging temporarily. That way I could make sure the batteries are topped up before I stop to camp.

 

[CHM]

My battery has been stuck on 63% for the last couple of months. I realized only last week that my Stop/Start is not even working, presumably because of that.