First off be warned that the ER14505 batteries are "Lithium Thionyl Chloride" (Li-SOCl2) chemistry and unlike the more common Alkaline batteries their open circuit voltage is NOT a useful indicator of battery capacity or health. Dead Li-SOCl2 batteries will read an apparently healthy 3.6 volts open circuit.
So how DO you measure if a Li-SOCl2 battery is healthy? The easy way is to check the sensor battery voltage on the monitoring web site. For all of our sensors that use a battery we measure and report the "loaded" battery voltage with each reading the sensor takes. In other words the battery voltage is measured when the battery is under maximum current load which coincides with when the wireless transceiver is transmitting. A healthy voltage is between 2.8 and 3.6 volts when measured at 25C. At colder temperatures lower voltages are acceptable.
You can also measure the battery health with a amp meter. A healthy battery should be able to deliver > 100 mA. Note that Li-SOCl2 batteries will hibernate during long term storage, please read more about that here.
So how DO you measure if a Li-SOCl2 battery is healthy? The easy way is to check the sensor battery voltage on the monitoring web site. For all of our sensors that use a battery we measure and report the "loaded" battery voltage with each reading the sensor takes. In other words the battery voltage is measured when the battery is under maximum current load which coincides with when the wireless transceiver is transmitting. A healthy voltage is between 2.8 and 3.6 volts when measured at 25C. At colder temperatures lower voltages are acceptable.
You can also measure the battery health with a amp meter. A healthy battery should be able to deliver > 100 mA. Note that Li-SOCl2 batteries will hibernate during long term storage, please read more about that here.
0