[SOLVED] Monitoring batteries from items "%" (without "lowbatt" functionallity)?

Setup, Configuration and Use Scripts & Rules
1

Hi,
I have several items with batteries, actual I ony have a specific view of this group (gBatteries): there I can see all battery percentages from these items.

I find some rules from other oH users, they are using the lowbatt option from items and monitor these in a “loop” over all battery-items (a switch, is “on” when item decide “my battery is low”)

Actual I don’t use this lowBatt function on the battery items, so can I also work with the % from batteries ?

Is it also possible to create a “loop” over all gBatteries -items and check the battery level /%) from these batteries and compare with a threshold and trigger an action than (like: pushover …) ?

2

See my rule. i put alle battery item in a group and loop one a day trough alle item and send a pushover message.

rule "Publish Battery Status"
when

    Time cron "0 0 18 ? * * *"

then

    val String ruleIdentifier = "Publish Battery Status"

    val Integer batteryThreshold = 10 // %. This should be enough to change the battery within a few days
    val StringBuilder aMessage = new StringBuilder

    var Integer emptyBatteries = 0

    emptyBatteries = gBatteryStatus.members.filter[ i | ((i.state instanceof DecimalType) && (i.state < batteryThreshold)) || ((i.state instanceof OnOffType) && (i.state == ON)) ].size

    logInfo(ruleIdentifier, "Daily battery check found {} empty batteries to report!", emptyBatteries)

    if (emptyBatteries != 0) {

        aMessage.append("-> Batteriestatusreport <-\n")
        gBatteryStatus.members.filter[ i | ((i.state instanceof DecimalType) && (i.state < batteryThreshold)) || ((i.state instanceof OnOffType) && (i.state == ON)) ].forEach[ aBattery | 
            aMessage.append(aBattery.label+"\n")
        ]
        aMessage.append("-> Ende <-")

        sendPushoverMessage(pushoverBuilder(aMessage.toString).withDevice("Disorganiser"))
        logInfo(ruleIdentifier, "Information about {} empty batteries has been published!", emptyBatteries)

    }

end
1 Like
3

Look good, first tests are fine! Thx!

Is it possible to add to every low battery line also the actuall battery level?
(like: “Bath temperatur sensor: Batt=17%” (instead only: “Bath temperatur sensor”))

(I think it’s possible, but how? This syntax is very “small”, in one line :wink: )

UPDATE:
Found it, was easy :wink:

        gBatteries.members.filter[ i | ((i.state instanceof DecimalType) && (i.state < batteryThreshold)) || ((i.state instanceof OnOffType) && (i.state == ON)) ].forEach[ aBattery | 
            aMessage.append(aBattery.label+": Batt="+aBattery.state+"%\n")
1 Like