The Sylvania 74388 / Zigbee model Contact Sensor-A currently reports low battery percentage with fresh CR2 batteries.
I have several of these Zigbee sensors, and with brand new CR2s (volt meter shows >3v), they only report voltage: 2800. Due to the current voltageToPercentage: "3V_2100", Home Assistant shows them all at 27% with new batteries.
The device appears to cap or underreport its Zigbee batteryVoltage at 28 / 2800 mV, so the current 3 V curve is not appropriate for this model.
Proposed fix: #12486
The Sylvania 74388 / Zigbee model
Contact Sensor-Acurrently reports low battery percentage with fresh CR2 batteries.I have several of these Zigbee sensors, and with brand new CR2s (volt meter shows >3v), they only report
voltage: 2800. Due to the currentvoltageToPercentage: "3V_2100", Home Assistant shows them all at 27% with new batteries.The device appears to cap or underreport its Zigbee
batteryVoltageat 28 / 2800 mV, so the current 3 V curve is not appropriate for this model.Proposed fix: #12486