rocketman58
10 mW
- Joined
- Aug 6, 2022
- Messages
- 34
I have a KT controller/display on my Bafang 500w rear hub drive. I recently switched to the KT system from the stock Bafang controller/display. Everything works well with the exception of the battery status indicator. The four bar battery indicator on the display does not correspond to the one on the Hailong battery. The difference can be as great as 50%. With the Bafang controller/display, both the display and the battery indicators were in sync.
With the KT setup, the display shows 4 bars when the 48v battery is fully charged, but it rapidly decreases as I ride. Checking the difference when the display showed 2 bars, the indicator on the battery still displayed 3. Checking again when the display showed just 1 bar, the battery still showed 3, but soon after dropped to 2 bars. Currently I have no bars on the display, but still show 2 on the battery indicator.
I have learned to watch the voltage shown on the display instead of the battery life indicator. Currently I have 0 bars on the indicator but the voltage shows 45.1v. It still show 2 bars on the battery's indicator which would translate to about 50% battery life. Based on this, I'm not sure how accurate the voltage shown on the display is. The problem is that even if there is plenty of battery left, the motor may shut off since the display thinks it is at the LVC. I have read that the LVC is around 40w?
I probably should check the voltage coming from the battery to see if it is the same as the display, but I don't have a meter or how to use one on the battery. That also would not resolve the problem if the battery and the display show different voltage. There seems to be no setting to sync the battery and display. Am I correct about this? Have others had similar problems, and were you able to resolve them?
With the KT setup, the display shows 4 bars when the 48v battery is fully charged, but it rapidly decreases as I ride. Checking the difference when the display showed 2 bars, the indicator on the battery still displayed 3. Checking again when the display showed just 1 bar, the battery still showed 3, but soon after dropped to 2 bars. Currently I have no bars on the display, but still show 2 on the battery indicator.
I have learned to watch the voltage shown on the display instead of the battery life indicator. Currently I have 0 bars on the indicator but the voltage shows 45.1v. It still show 2 bars on the battery's indicator which would translate to about 50% battery life. Based on this, I'm not sure how accurate the voltage shown on the display is. The problem is that even if there is plenty of battery left, the motor may shut off since the display thinks it is at the LVC. I have read that the LVC is around 40w?
I probably should check the voltage coming from the battery to see if it is the same as the display, but I don't have a meter or how to use one on the battery. That also would not resolve the problem if the battery and the display show different voltage. There seems to be no setting to sync the battery and display. Am I correct about this? Have others had similar problems, and were you able to resolve them?