Ajax Battery Life Estimator
Wondering how long your Ajax sensor’s battery will actually last? Pick the device, tell us how it’s set up, and we’ll give you a realistic estimate based on Ajax’s own published specs.
19 Ajax devices covered
Every battery-powered Jeweller sensor, siren, keypad and fob we install regularly.
Real spec-sheet data
Nominal battery life pulled straight from Ajax’s own published device documentation.
Tuned for local conditions
Accounts for cold winters, coastal signal loss and typical install distances we see around Melbourne.
Free, no signup
Just pick your device and settings. No email, no account, no catch.
Battery life is only half the picture — placement, coverage and interference matter just as much. Our techs can walk your property and tell you exactly what you need.
Book a free onsite appraisalWhat actually drains the battery
Four things determine how long a wireless sensor lasts. We factor in all of them.
Manufacturer baseline
We start from Ajax’s own published nominal battery life for each device, taken straight from their spec sheets.
Temperature
Cold weather makes any lithium battery work harder. Outdoor sensors in Melbourne winters lose more capacity than indoor ones.
Signal & ping interval
A weak signal means more retransmissions. A shorter ping interval means more radio activity. Both cost battery.