Death of a car battery and related issues

[CWatters]

My understanding is that auto start stop does or can discharge the battery deeper than otherwise but they have a BMS system that turns off the auto start stop mode if it gets discharged too much. They may also use a slightly larger battery than on comparable cars without auto start stop. Don't think the battery is supported with a super cap, at least not on my car.

 

[mic*]

My understanding is that auto start stop does or can discharge the battery deeper than otherwise but they have a BMS system that turns off the auto start stop mode if it gets discharged too much. They may also use a slightly larger battery than on comparable cars without auto start stop. Don't think the battery is supported with a super cap, at least not on my car.

Larger bttery units seem to be another approach. SC's are rated at >500,000 cycles so they are not considered a servicable part. They will outlast your steering wheel.

 

[mic*]

@CWatters, I just had a bit of a dig around and I must admit it is hard to find proprietary info on SC use in fuelled vehicles, especially without being used in connection to some form of kinetic energy recovery system. Ie, an SC integrated ONLY for stop-start battery support.

 

[gmax137]

We have a Toyota Etios Liva, four years old, petrol variant. ... Our car is not used much. Usually on an average, it is driven for around 14km per month.

Is this number (14km per month) correct? The four-year old car has 670 km (~400 miles)? At the advertised mileage (about 20 km per liter) you have burned around 34 liters (9 gallons, US) in the past four years?

I have had vehicles with low use like this (not cars, but motorcycles and scooters) and I would expect all kinds of problems: gasoline turned to sludge, clogged carburetor, dead battery, flat spots on the tires, mice eating the wiring, etc. If the use is really this low I would advise either drive it more, or sell it and use taxis to get around.

 

[Wrichik Basu]

Is this number (14km per month) correct? The four-year old car has 670 km (~400 miles)? At the advertised mileage (about 20 km per liter) you have burned around 34 liters (9 gallons, US) in the past four years

Well, I didn't think of such detailed calculations. The average value was of 2018. In the previous years, it has traveled quite a distance. The odometer reading currently is a little greater than 5000km.