What are the countermeasures to prevent dry battery leakage?

"Over-discharge of battery" is one of the causes of battery leakage.
To suppress over-discharge of dry batteries, it is important not to draw current from the battery so that the voltage per cell does not become 0.6 V to 0.7 V or less.

TOREX recommends reduce the current consumption to 1 μA or less by determining the battery voltage drop, stopping the operation of following device and cutting off the power supply line.

For how to concretely reduce the power consumption, following method is representative.

• Cut off the power supply line by UVLO / low voltage detection function of load SW (XC6194 etc.).
• Detect low voltage of battery voltage using CMOS output / "H" active type voltage detector.Cut off the power supply line with Pch FET depending on the voltage drop signal.
• Step-up operation / system is stopped by UVLO function of step-up DC/DC when the battery voltage drops (XC9148G etc.).