Does you effort increase as battery gets low?

[Neverlost99]

I noticed around 40% my effort seemed significantly higher on pas3 than with a full 48v battery. From 100% to 40 I didn’t notice it but all pas seemed harder with less electric reserves.

 

[AHicks]

Yup, I notice that. I don't know what the percentages are, but my bikes are noticeably "less zippy" just prior to needing a charge. I charge at 46. something, so I'll say I'll notice that loss in the low 48v range and lower.

 

[fooferdoggie]

Nope my assistance is consistent from start to finish but this is on a Bosch system. Battery levels don’t effect power output.

 

[Gordon71]

It's not terribly noticeable to me on my Rad Rover probably because my rides average 20-25 miles so there's a lot left when I'm done. However I can see a small drop in wattage on the screen at specific assist levels from the beginning of my ride to the end of it. It's not much. Just a few watts.

 

[harryS]

Sure, I see it on the watt levels reported ny my displays, and I can feel it in the pedal effort. Some of that could be just from being tired after 60-90 minutes of riding, but the wattage is 10-20% lower.

 

[AHicks]

Nope my assistance is consistent from start to finish but this is on a Bosch system. Battery levels don’t effect power output.

Mine might be like that as well if I only had a 250w motor.....

 

[fooferdoggie]

Mine might be like that as well if I only had a 250w motor.....

of if you did not buy do it yourself parts more like. remember that 250 watts gets me up this and will get me 40+ miles at 18mph.

 

[rich c]

Very common on low end bikes with cadence sensors. Not an issue with Bosch mid drives.

 

[Gordon71]

I noticed around 40% my effort seemed significantly higher on pas3 than with a full 48v battery. From 100% to 40 I didn’t notice it but all pas seemed harder with less electric reserves.

I started my ride with a fully charged battery today. In pas2 it read. 141watts. In pas3 it read 362watts. 23 miles later at the end of my ride in pas2 it read 125watts and pas3 325watts.

 

[AHicks]

Yup, I'd call that pretty typical, contrary to the claims by some...

 

[Mentalist]

It’s from voltage sag. Has nothing to do with the motor type. It’s a battery characteristic.
The bosch users that don’t notice it is cause Bosch doesn’t make powerful motors..they’re efficiency motors.

 

[JES2020]

I noticed around 40% my effort seemed significantly higher on pas3 than with a full 48v battery. From 100% to 40 I didn’t notice it but all pas seemed harder with less electric reserves.

Completely normal. When the voltage drops the capacity to supply amps drops as well.
To counter act , just increase your PAS.

 

[AHicks]

It’s from voltage sag. Has nothing to do with the motor type. It’s a battery characteristic.
The bosch users that don’t notice it is cause Bosch doesn’t make powerful motors..they’re efficiency motors.

I agree this is about sag. It's not unusual when the battery starts running down to the point it needs to be charged.
It also has to do with the load being placed on the battery. For instance, somebody with a 500+ watt motor running in PAS 3, is going to notice this end of charge "sag" more than somebody running a 250w motor in PAS 1.