ZWave Battery Question

Hello Everybody,

i have several Z-Wave devices with battery that are running quite some time. What worries me a is the percentage of the battery.

My devices:
5 Fibaro Smoke detectors ( FGSD-002 ) running for almost a year now
1 Fibaro Door/Window contact running for half a year now

All of them report 100% battery capacity. Especially the value of smoke detectors seems a bit unrealistic for me.

Am I missing some specific setting?
Habmin shows the devices still online, so they are communicating with the controller and I surely do not have some nuclear powered batteries.

Setting the log level of the zwave binding shows me that the devices report 100% (this is from one of the smoke detectors

2018-03-15 23:20:42.260 [DEBUG] [ssage.ApplicationCommandMessageClass] - NODE 12: Incoming command class BATTERY
2018-03-15 23:20:42.262 [DEBUG] [ommandclass.ZWaveBatteryCommandClass] - NODE 12: Received Battery Request
2018-03-15 23:20:42.265 [DEBUG] [ommandclass.ZWaveBatteryCommandClass] - NODE 12: Battery report value = 100
2018-03-15 23:20:42.273 [DEBUG] [ding.zwave.handler.ZWaveThingHandler] - NODE 12: Got a value event from Z-Wave network, endpoint = 0, command class = BATTERY, value = 100
2018-03-15 23:20:42.278 [DEBUG] [ding.zwave.handler.ZWaveThingHandler] - NODE 12: Updating channel state zwave:device:86910632:node12:battery-level to 100 [DecimalType]

OpenHab is 2.2 (Openhabian 1.4) with the Z-Wave binding and a Razberry on Raspberry 3

I’ve seen reported that many zwave devices sadly report 100 up until they die and report 0 as their final message. This may be one of those.

Ok, i’ve an update according this. Maybe it helps for other users.
Since today one of my sensors reported 90% (my first Fibaro Smoke Detectors).
So it seems to work, and maybe the battery lasts really long.