#gps

The pet-collar power budget — what a multi-week cellular tracker would actually take

“Cellular pet-tracker battery life isn't a marketing number, it's a power-budget engineering problem. The whole game is the modem's average current — and LTE-M's Power Saving Mode is the first thing I've seen that could move it by 10×.”

Six months on the Whistle GPS Pet Tracker — the cellular realities

“Claimed 7-day battery. Real 3-4 days the moment GPS is doing the job you bought it for. The 'when it matters' number — dog out, located every few minutes — is closer to a single day. Divide the box claim by two for steady state, by seven for the emergency.”