Here are more suggestions for T154 display to make it perfect
1) Restore last used assist level and information at the bottom screen after power on
View attachment 386709
2) For energy consumption use more suitable Wh (Watt-hour) instead of Ah. Amp-hour is not very useful for tracking energy consumption in system where voltage is constantly changing (due to voltage sag and normal discharging).
View attachment 386710
My eggrider display could also show Wh for energy consumption
View attachment 386713
3) Bar on left which represents electric power should be automatically scaled according to real power limit set in ECO,CITY,SPORT profile. Currently it is fixed at 1000W.
Bar on right should only represent HUMAN POWER (Torque * Cadence). Currently it is a weird combination of human power + electric power. Not very useful.
View attachment 386711
4) Ambient temperature is shifted by ~15C versus real temperature
View attachment 386712
5) Bug Motor RPM does not show 0 RPM when motor switches off
Dear Customer,
Thanks for your detailed feedback. We really appreciate the time you put into this.
Here's what our factory can actually do, and what needs more work.
1) Restore the last used assist level after power-on
Makes sense. We can do this on the software side pretty easily (needs persistent storage). We're looking at making it an optional setting, not forced. We need to ensure it complies with regional safety standards (like EN15194) before rolling it out globally.
Because in some regions, starting at low assist is preferred for safety and compliance.
2) Use Wh instead of Ah for energy display
You're right, Wh is more accurate, especially under variable voltage.
So, doing this correctly requires stable, calibrated real-time sampling of voltage and current, plus reliable integration over time. Our take is simple: no data is better than wrong data. Until we can guarantee high-precision integration, we prefer to stick with reliable raw metrics. It's on the radar, but not a short-term change.
3) Power bar scaling and human power display
Two separate things:
Motor power bar scaling — Agreed.
A fixed scale (e.g. 1000W) is misleading when profiles have different limits. We're reviewing how to make the bar reflect actual output per mode.
Human power display — Tougher.
Real-time human power calculation depends on precise torque sensor calibration, cadence sync, and filtering. Done wrong, it's just misleading. Right now, our focus is on making assist behavior stable and predictable — not adding derived numbers that might be inaccurate.
4) Ambient temperature offset (~+15°C)
Thanks for bring this to our attention. That kind of deviation is not normal, does it stay constant after a cold start, or does it increase during long climbs? Knowing this will help us pinpoint if it's an NTC placement issue or an internal heat-soak problem. We're actively looking into it.
Our Summary
Current priorities:
System stability
Sensor accuracy
Predictable assist behavior
Some of your suggestions (assist memory, better power visualization) fit well, we're evaluating them. Others (Wh metrics, human power) need more validation before we commit.
Thanks again and if you have more real-world riding observations, we'd love to hear them at any time.
Toseven Support Team