Any news about this? seems I’m experiencing similar issues as well.
On 13/11 2021 I’ve put 3 RS2-devices ‘on the shelf’ for a couple of weeks, for longer storage I try to make sure battery has a StateOfCharge between 60-80%.
When I now try to boot these devices, they all have unexpected behavior:
The oldest device was drained (SoC 1%), and needed to be fully recharged.
Also the oldest device shows strange values in the battery-log:
- the cyclecount suddenly jumps from 17 to 24…
- it looks like only 1 cell had a significant voltage loss over time
- I guess there is also an issue with the timestamp of the 2nd sample. Timestamp says it’s data from the time of shutdown/storage, but all the actual data (voltages/current/…) are so close to the measurements since boot. (accoring to the usb- vs charge-current I think the device was charging through the 9-pin cable when shut down)
[2021-11-13 08:05:36,308] [ INFO] — {‘USB charger current’: 0.0, ‘USB charger voltage’: 0.0, ‘Wall current limit’: ‘1500’, ‘USB current limit’: ‘1000’, ‘State of charge’: 73, ‘Charger status’: ‘Charging’, ‘Cell1 Voltage’: 3404, ‘Cell2 Voltage’: 3391, ‘Charge Full’: 5685000, ‘Cycle Count’: 17, ‘Temperature’: 31.2, ‘Charge Now’: 4125000, ‘Charging’: True, ‘Voltage’: 6.79, ‘Current’: 0.57, ‘OTG’: False} (monitor.py:172)
[2021-11-13 08:05:42,015] [ INFO] — {‘USB charger current’: 2.55, ‘USB charger voltage’: 4.74, ‘Wall current limit’: ‘1500’, ‘USB current limit’: ‘1000’, ‘State of charge’: 1, ‘Charger status’: ‘Charging’, ‘Cell1 Voltage’: 2895, ‘Cell2 Voltage’: 3386, ‘Charge Full’: 4044000, ‘Cycle Count’: 24, ‘Temperature’: 25.5, ‘Charge Now’: 23000, ‘Charging’: True, ‘Voltage’: 6.28, ‘Current’: 1.49, ‘OTG’: False} (monitor.py:172)
[2022-01-22 07:44:47,539] [ INFO] — {‘USB charger current’: 2.5, ‘USB charger voltage’: 4.74, ‘Wall current limit’: ‘1500’, ‘USB current limit’: ‘1000’, ‘State of charge’: 1, ‘Charger status’: ‘Charging’, ‘Cell1 Voltage’: 2997, ‘Cell2 Voltage’: 3399, ‘Charge Full’: 4044000, ‘Cycle Count’: 24, ‘Temperature’: 27.3, ‘Charge Now’: 40000, ‘Charging’: True, ‘Voltage’: 6.4, ‘Current’: 1.49, ‘OTG’: False} (monitor.py:172)
The 2nd device (which is a RMA-replacement), has one cell’s voltage jumping up and down, the device refuses to charge (can only boot while connected to USB power supply). (full log was sent to support)
The 3rd device was also completely empty (showed the red led, so I immediately attached the charger.
I’m sure I’ve left all these devices with a SoC of 60-80%, and now they were totally empty.
I’m pretty sure that in the past (1-2 years ago), I could store the RS2 for longer periods without completely draining the battery. (SoC did change, but the device wasn’t empty, IIRC)
So I’m guessing it might be related to some FW-change.
(couple of months ago, I also changed the ‘wake on power through serial’-setting on some devices, but doesn’t seem to be a difference)
Could it make a difference when the device is shut down ‘through software’ versus ‘the power button’?
