Bug_Report - Wrong battery temperature displayed on overview page

[Tom92 (Tom Diedrichs)]

In my system on the main overview screen I see that the battery temperature of my Bow thruster battery bank NOT from the main Lithium battery bank.

This must be a bug, since all other values are correctly showing the main lithium battery. See attached print screens.

My system (main components for this issue)

• Lynx BMS NG with four 200A 12V batteries (main battery bank) - Latest FW v1.17
• Cerbo GX + Touch 70 - Latest FW v3.72
• 1 Smart shunt 500A - For a Bowthruster battery bank (with the optional temperature sensor) - Latest FW v4.19
  • Charging from the main battery bank via a Orion XS DC-DC - Latest FW v1.13
• 1 Smart shunt 500A - For the Start battery bank (without the optional temperature sensor) - Latest FW v4.19

[nickdb (Nick)]

Which monitor is selected as the bmv in dc system settings? And/or as the source for dvcc?

[pwfarnell]

I do not know if the attached will be useful. I originally had AGMs with a battery temperature sensor connected to the Cerbo for charge voltage temperature compensation. I swapped to Lynx NG BMS and the temperature service was not updated to the Lynx BMS battery temperature. The trouble is the Lynx BMS forces STS off so you can not do anythimg and ideally it should swap to the Lynx BMS.

I found a way to deal with this in Node-RED. Inject a number of 0 into a custom control node as shown below. This removes the forced off value on STS leaving it set to off. You can then go into settings/charge control and turn on STS then choose the Lynx BMS as the required service. Then go back to Node RED and inject the number 2 into the custom control node to force STS off.

details of the custom control node and flow below, do this at your own risk.

[Tom92 (Tom Diedrichs)]

It is the same situation we have, we used to have a small shunt on a AGM battery bank. But we upgraded to lithium with the Lynx NG BMS.

Thank you for sharing your fix. I will try it out.