Closed ToMadoRe closed 9 years ago
Just happened again: Here the output of the /battery_state and a picture from the display on the robot platform:
---
header:
seq: 8656
stamp:
secs: 1383734276
nsecs: 645153870
frame_id: ''
voltage: 22.7000007629
current: 3.27800011635
lifePercent: 72
lifeTime: -1
charging: False
powerSupplyPresent: False
cellVoltage: [2.6110000610351562, 2.8320000171661377, 2.8630001544952393, 2.6760001182556152, 2.947000026702881, 2.878000020980835, 2.9260001182556152, 2.9710001945495605]
Also, is it normal that the cellVoltage differs that much?
@ToMadoRe I totally missed this, I guess it is ok now? Did the firmware update solve it?
We didn't have this problem during the deployment. So I will close it for now.
We just experienced another severe problem with our battery. While running the waypoint patroller, the battery level shown on the small display on the robot platform indicated a very low battery level (blinking symbol). However, the rostopic /battery_state still published life_percentage with 79%. The cell voltage was down to approx. 2.4V. As expected, the robot died in the middle of its patrol run.
Not sure if this is related to our problem with a fully charged robot turning off abruptly when it stays on the charging station. Metralabs offered a firmware update. Was just wondering if anyone else experienced such a big discrepancy between ROS battery_state and the battery level indicated on the platform.