Battery calculated cell delta

[BompaBert]

Finding it very valuable, am not succeeding in finding an alternative to the OTX Telemetry calculated Lipo cell delta feature. Otherwise, it would be great to add this next to Ethos max, min, lowest and highest choices. Very valuable because a calculated cell delta gives you insights in the health condition of a battery and works preventively -early detection of battery trouble. Am sure am not the only one that misses this feature...

[bsongis]

I think I am the author of this function in OpenTX, but my memory is short...
Would you remind me how you setup this sensor in OpenTX?

[BompaBert]

1. add calculated Cell for example 'Vdif' for Sensor = Cels and choose 'Delta' from the drop down list.
   

[BompaBert]

FYI
Per AI: A safe maximum voltage difference between individual cells in a LiPo battery is generally considered to be around 0.05 volts when the battery is at rest (static voltage), and up to 0.1 volts while in use (dynamic voltage); exceeding this can indicate potential issues with cell balancing and could shorten the battery life

[helitron]

I would be very pleased if this function from OpenTx/EdgeTx were also available in ETHOS, as I have practically always used it in OpenTx/EdgeTx.

[BompaBert]

@bsongis Was hoping on an alternative solution by creating a custom sensor that would subtract the highest lipo voltage by the lowest. However, there seem to be a small bug when using the lowest lipo voltage as the second source in the calculation - value doesn't change. Any other relevant lipo source shows a correct value as result like 'lipo highest' subtracted by 'lipo cell1' for example, works ok.
Don't mind opening an issue if needed...

[BompaBert]

Am opening an issue on the Lipo lowest feature as it is not working correctly when selected as a source for a custom sensor.