I'm presuming by 'voltage mode' you're referring to displayed voltage. This is easily checked, if you have a voltage display and it drops under load then no, it does not apply to displayed voltage.
So today I am on my usual commute to work on back roads, a couple of sections have you holding down the throttle at full for maybe 5 mins without pause. I noticed my battery percentage held at 71% for the whole 5 mins, I let off and after a few seconds it jumps down to 59%.
Anyone else noticed this or have this issue? It's not a big deal but I thought i'd ask the question.
The battery state of charge is usually detected by monitoring the battery voltage, this isn't ideal as the voltage sags significantly whilst under load which would show a falsely low soc.
"The method often used to get round this issue is for the firmware to only update the soc display when there is no significant load on the battery. This generally works pretty well and I guess this is how Daniel has coded his fw, but does give the effect you describe in your post - like you say it's not a big problem."
Previous user was talking about state of charge displayed in %, so I thought it might also apply to state of charge displayed in Voltage.