I just got this BMS working on my latest 18-cell e-bike. The cell voltage calibration appears very good as they individually QA check each item before they send it out.
Bluetooth connectivity worked fairly well but there doesn't appear to be any security code so possibly anyone can connect within range that has the "xiaoxiang" app. The Android app appears to have basic functionality working. I really like the accurate live monitoring of each of my bike's 18 cells along with its accurate amp reading.
- Can't find way to limit charge cutoff to an arbitrary voltage. I often go for shorter rides and would like to set even lower cutoffs like 3.90V or 4.00V.
- App has a timer value to set charge cutoff by a time duration but that doesn't get accepted by the controller so the timer cutoff is not really working
- No Amp-Hour count during charging or discharging. This is such a simple statistic to compute so its curious its not included.
- The "dashboard" should be customizable as there's information I would prefer to see rather than their default dashboard
I'm still relatively new to this BMS so if anyone knows how to accomplish the above, it'd be appreciated.
Another problem is their app version management appears to be off. The website lists download of the APP with this specified version:
Smart BMS Android APP V2.1.1006
But when the app is installed, it is actually V2.1.1005
which doesn't inspire confidence in their software management.