GPS Tracker Battery and Data Costs Too High: Efficient LTE-M and NB-IoT Firmware
Cellular trackers burn batteries and data plans fast when the firmware is not built for it. How I make them last.
The problem clients bring: "Our trackers need charging every few days, and the cellular data bill is higher than planned."
What is really going wrong
- The modem stays registered and awake between reports.
- The modem's own power-saving modes are not used or not accepted by the network.
- GPS takes a full cold start for every fix.
- Each report uses a heavy protocol with large headers.
How I solve it
- Use the modem's power-saving and extended sleep modes and confirm the network grants them.
- Report only when it matters, using motion detection to wake.
- Keep GPS assistance data fresh so fixes are fast.
- Send compact payloads over a lightweight protocol.
- Measure real current and data usage on the target network.
What the client gets
Much longer battery life and a predictable data bill, which often changes the business case for the whole product.