Li-SOCl₂ batteries for IoT and wireless sensors
Low standing load, sharp transmission pulses: the configuration follows the pulse the radio produces, not the radio's name.
Wireless sensors combine a very low standing load with short, high-current transmissions. The chemistry is well suited to the standing load; the transmission is where the configuration decision is made.
The communication standard matters less than the shape of the pulse it produces. A device that transmits for a few milliseconds every hour asks something different of the cell than one transmitting for hundreds of milliseconds after an event. Send the working current, the peak current during transmission, the pulse duration and frequency, the cut-off voltage and the temperature range.
What decides the battery
Application and device
Sensor type, radio standard and duty cycle
Working current
The sleep and measurement load between transmissions
Peak current
What the radio draws while transmitting
Pulse duration
Length of a single transmission burst
Pulse frequency
How often the device reports
Cut-off voltage
The lowest voltage the radio and MCU still work at
Operating temperature
Indoor, outdoor and enclosure conditions
Which configuration fits
Many wireless devices are served by an ER cell with an HPC or HLC pulse capacitor, where the capacitor covers the transmission and the cell covers the standing load. A single cell remains an option where the pulses are small and the cut-off voltage leaves enough margin. The choice is made from your measured values, not from a default.