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Hi there
I’m looking to see if anyone has a method to convert SOC on the battery to estimated run time left on battery, ideally based on live/5/10/15/30 minute load averages.
Ideally to display on VRM.
I assume there must be away to calculate this like Tesla converts SOC to miles
Thanks.
Run Time Minutes = Battery Ah x ( %SOC - Min%SOC ) x 60 / Amps
Where Amps is instaneous or avg amps over some previous time frame
Min%SOC is the minimum %SOC you won't go below. 10%, 20%, etc for LiFePO4. 40% for Lead Acid?
The shunts have this function build in, in was expecting they would show it in VRM too...
The time to go is displayed in VRM when the battery is discharging ss calculated by the BMV or SmartShunt.
The maths is fairly basic, and mostly accurate, I use node red to calculate a time to charged, time to discharged is the same calc in a different order.
