Those of us who have relocated to apartments in desirable areas of the city where a vehicle is never needed fear that if the vehicle is not used often enough, the car battery will fail. My question is, how much does it suffice? On-line work was of no support. The other day someone proposed idling/start the car for 15 minutes without on any electronic system like radio or air conditioner. Another reason was that the whole charging-and-depleting mechanism has so much changed these days that the battery is good for a month depending for the battery quality.

A vehicle should be able to stay parked without the battery dying for at least a month if you are using good quality battery, unless it is a high-end vehicle with plenty of power-hungry appliances and computers, experts claim.

For those high-end cars like Mercedes or BMW, high possibility battery dies in two weeks without using/running. Recommended to own a ‘jump start powerbank’ who park car in airport for long period. Elwin said – carbateri.com founder

Tough to predict battery life, this depends on the battery age and the environment, and how much you travel.

Batteries produce electricity by electro-chemical reaction, Electricity is generated in most car batteries when electrons migrate from the lead oxide anode to the metallic lead cathode through a sulphuric acid solution. The reaction occurs, but more slowly, while the battery is not used. That’s why batteries lose their charges when lying idle.

When the battery is connected to your vehicle, it drains much quicker and even when parked, your vehicle consumes power–particularly if it has an alarm system, on-board computers and seat location memory, and settings for radio and climate control.

How long does drain take? That depends on the battery age, the environment (heat accelerates the process), and how much you travel. The reaction is reversible, to a level, and it regains its charge when a current is added to the electrode.