[ozw] Battery level not reported on Yale locks

[Dinth]

The problem

Battery level for Conexis L1 lock doesnt seem to be reported correctly - it always shows 0%, even on fresh batteries. I dont believe this is an OZW issue (unless it a regression in 1.6), as it was working fine a while ago on 1.4.

MQTT dump: mqtt_dump.txt

Environment

• Home Assistant Core release with the issue: 0.114.1
• Last working Home Assistant Core release (if known): NA
• Operating environment (OS/Container/Supervised/Core): OS
• Integration causing this issue: ozw
• Link to integration documentation on our website: https://www.home-assistant.io/integrations/ozw/

[ovid-io]

I have same issue, changed batteries over a month ago but lock still reports 1% battery. Would think it's Yale issue instead - as my integration is via SmartThings -> HA, and both report same value

[probot-home-assistant[bot]]

Hey there @cgarwood, @marcelveldt, @martinhjelmare, mind taking a look at this issue as its been labeled with an integration (ozw) you are listed as a codeowner for? Thanks! _{^{(message by CodeOwnersMention)}}

[MartinHjelmare]

The mqtt info we receive is reporting 0 % battery level, looking at the mqtt dump. We're just showing what we receive from the ozw daemon which is using the OpenZWave library to interpret the device data:

{
    "Label": "Battery Level",
    "Value": 0,
    "Units": "%",
    "ValueSet": true,
    "ValuePolled": false,
    "ChangeVerified": false,
    "Min": 0,
    "Max": 255,
    "Type": "Byte",
    "Instance": 1,
    "CommandClass": "COMMAND_CLASS_BATTERY",
    "Index": 0,
    "Node": 55,
    "Genre": "User",
    "Help": "Current Battery Level",
    "ValueIDKey": 929038353,
    "ReadOnly": true,
    "WriteOnly": false,
    "Event": "valueRefreshed",
    "TimeStamp": 1597430988
}

So this is not a problem in the ozw integration. Either it's the device that is reporting incorrectly or the data is interpreted incorrectly in the OpenZWave library.