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BATTERY PROTECTION

To prevent excessive discharge of the backup battery which can also lead to subsequent damage to the device, it is advisable to introduce the following rules (they are already present at positions 498 499 500 in devices equipped with battery manufactured after February 2024).

RULE 498

Since the device suspends battery charging when the temperature is not between 0 and 45°C, we force charging when the average battery voltage drops below 3.7V in order to maintain a reasonable charge level.

SCH**** SCHEDULED AT **:** 

$A63<0 TEMPERAURE AVERAGE < 0

$A53<3700 BATTERY LOWEST < 3700

AT#CHRG=1

TRIGGER EVENT occurs every minute (****).

The first condition to check is that the average temperature is below the threshold of 0°C.

The second condition to check is that the minimum battery voltage is below the threshold of 3700mV.

The first action contains the command that forces the battery to charge for 1 minute.

RULE 499

SCH**** SCHEDULED AT **:** 

$A63>45 TEMPERAURE AVERAGE > 45

$A53<3700 BATTERY LOWEST < 3700 

AT#CHRG=1

TRIGGER EVENT occurs every minute (****).

The first condition to check is that the average temperature is above the threshold of 45°C.

The second condition to check is that the minimum battery voltage is below the threshold of 3700mV.

The first action contains the command that forces the battery to charge for 1 minute.

RULE 500

To avoid excessive battery discharge and prevent damage to the device, we turn it off.

A5 BATTERY 

$I72=0 MAIN POWER SUPPLY STATUS = 0 

$I82=0 AUX POWER SUPPLY STATUS = 0 

$A53<3700 BATTERY LOWEST < 3500

AT#OFF

trigger event is the end of the battery voltage measurement period.

The first condition to check is that the main power supply is not present, it means logical state 0.

The second condition to check is that the aux power supply is not present, it means logical state 0.

The third condition to check is that the minimum battery voltage is below the threshold of 3500mV.

The first aCTION contains the command that turns off the device which will automatically turn back on when one of the external power supplies returns.