jimoil Posted December 17, 2021 Share Posted December 17, 2021 I have KS-14D and recently it was the first time when I went under 20 % level for the battery. Then some strange things happened. I had perhaps 15 % battery and the temperature was maybe 0°C (32°F). Suddenly there was a quite drastic pedal tilt-back, or something similar. I am not sure what happened. The road was slightly wavy, not in good condition, so I'm not sure what the road's role was in this. I was not going very fast. I don't know what my speed was. Maybe 17 km/h? There was no audible warning (no voiceover). The tilt-back was so unexpected that I completely lost balance and the EUC flew away, damaging the paint. Luckily no bystanders. Does anyone know what happened? My speed settings are: First and Second level alarm 0 km/h, Third level alarm 25 km/h, Pedal Tilt-back 30 km/h. I think this might be related to another situation the next day. Again the temperature was about 0°C. Now battery level only about 12 %. It complained about slowing down at 15 km/h. I didn't understand why it complained that at such low speed. Then it also said that the battery should be recharged. Then the status screen said Speed Limit 18.8 km/h instead of the normal 20.0 km/h I have there. That leads to me thinking perhaps low battery and/or low temperature change the Speed Limit? Am I on the right track or what happened? Later on the Speed Limit went back to 20.0 km/h. 1 Quote Link to comment Share on other sites More sharing options...
Popular Post level9 Posted December 19, 2021 Popular Post Share Posted December 19, 2021 I'm not sure about the 14D but I'll guess that it has some similar firmware logic as my S18. On the S18, max speed will decrease linearly after the battery drops below 30%. Also, the colder the weather, the worse the performance of the lithium batteries. So, considering the battery levels you were at and the temperatures, I'm not particularly surprised at your experience. I treat EUCs with kids gloves when they drop below the ~30% battery level - and especially during low temperatures - or better yet, try not to get caught out with low battery levels at all (if possible)... I also recommend using the Safety Margin alarm with EUC World (if it's supported on the 14D) - as this will warn you when the wheel is strained regardless of speed limit settings. I actually don't even use speed limits anymore, just the Safety Margin, it's much more reliable. 5 Quote Link to comment Share on other sites More sharing options...
mrelwood Posted December 29, 2021 Share Posted December 29, 2021 (edited) While a gas tank provides the same amount of energy at all charge levels, a battery does not. It’s more akin to a person: low on energy = low performance. Same for the cold, low performance. It’s best to charge the wheel up to full and leave the charger plugged in for an hour or two before a ride. But if storing the wheel for weeks is best to have the battery somewhere around 40-80%. Edited December 29, 2021 by mrelwood 1 Quote Link to comment Share on other sites More sharing options...
MetricUSA Posted January 15, 2022 Share Posted January 15, 2022 Add a nice winter jacket around the wheel before going out and after you follow above advice... Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.