Purpose
This page describes how the battery alert behaves in the ZAlerts configuration.
Characteristics
- The battery alert works for all installations.
- The Zonar GPS unit tests the battery voltage when:
- The vehicle is turned off;
- Every 4 hours when the GPS unit phones home while the engine is off.
- Only ONE ZAlert is generated per power-off period. If a vehicle parked overnight produces a battery ZAlert during an overnight phone home, it will NOT generate another ZAlert until after the next power on/off cycle
- In periods of rapid battery drain it may be possible for the GPS unit not to generate an alert before it falls below its minimum operating voltage (8-30 Volts). Here is an example to help understand.
- For this example we will use 12.0v as the triggering threshold.
- Say a unit phones home at 15:00 The next scheduled call home will be 19:00.
- The driver pulls into the yard at 15:15 and keys off. At this time the voltage is 12.5v, so no alert is generated.
- The driver accidentally leaves the vehicle in a high battery drain down condition (e.g., high beams, radio, fans, computer are all on).
- By 18:00, these high draw items have pulled the battery voltage down to 7.0v.
- At 19:00 the unit will not be able to perform its scheduled phone home and no battery ZAlert will be generated.
