I feel like the starter would survive longer if disable it

If battery alone, there should be no problem to change outside because it is a consumable item.

Whats the model of yoyr battery before we continue

Waterfish topkek 500 for myvi battery

It was displayed on the tester.
Battery was 4 years old & mileage was 18,000+ only. Owned by a elderly.
If I remember correctly, the voltage was 12.2~12.3V & CCA was less than 210.

Of course bro., an EFB-M42 battery into the Myvi Adv Gen3.
If a NS40ZL was installed, I guarantee you that the client automatically loses the battery's warranty and also Perodua's warranty.

Nothing appeared on the dash etc etc. That is because to me when a Bad Cell was detected, everything else stops, until a new battery is replace, before further testing is done to the car. I remember I had to wait for more than a week for the EFB battery to arrived for this client.

Bro., if you can figure out how the bar came about that would be really great. Until today I still cannot figure out properly what the hell had happened. But I can guarantee you, I don't want to be caught in that situation again.

This post has been edited by Roman Catholic: May 5 2022, 10:40 AM

I think this tered is discussing myvi 1.5 H

You mean the carbon brush?

I already told him year and variant of the car..

It's still valid, about how much fuel you could potentially save, it won't help if you conserve your electrical load but drive 120kmh all the times.

In theory, auto start-stop may ease fuel consumption.

Yep, but people say those start stop car use different type starter thus no issue. So.. xtau la.

In theory.

But in smaller cars like myvi, does it actually help fuel consumption. They’re fuel-savvy as it is.

I dunno too. I guess we’ll see in 4-5 years’ time when the final report card for this version of myvi is out.

Yes, theoretically. My point is even if you have two identical Myvi, there are so many factors that will produce different results.

They may be fuel savvy as you said but they may be more fuel savvy. There is no straight answer to your question because no one has conducted proper studies with empirical evidence for either argument, so you do what you believe is best for you.

I was wondering because if the myvi is fuel-savvy to begin with, any fuel consumption reduction from auto start stop system might be too small to offset the battery life reduction and probably will end up costing more.

Other cars I dunno.

The battery life is about the same if you use the default specifications approved/recommended by the manufacturer. EFB and AGM are designed to be more reliable than normal battery..

If a normal battery can last two years in a car without auto start-stop function, you can expect the factory-fitted EFB or AGM battery to last about the same in a car with auto start-stop function.

Your car system will determine if it is safe to activate auto start-stop, e.g. in overcharged state or insufficient current.

Assuming normal battery lasts as long as EFB or AGM battery, will the cost of replacing such battery offset the saving gained from the auto start stop function? Because EFB or AGM battery is more expensive than normal battery.

Kesian drive myvi but pay BMW price value for that battery

The thing is you cannot, or rather, should not replace EFB/AGM battery with normal battery. Potential saving or loss you may get is the least of your worry when your car electrical system may be at risk and rendering the warranty void.

I just don't understand the idea of buying a car designed as it is but buyer intend to skimp here and there for meager saving. Almost similar to how people would get a different tyre profile without knowing the effect it could incur.

That’s the point of discussion between me and MR_alien. I was wondering whether it’s worth it to put auto start stop system in myvi when they’re already very good, judging from their track record.

Putting the system in and requiring expensive, specialised battery seems inefficient when the old system is fuel-savvy enough.

This post has been edited by KineticKill: May 5 2022, 06:46 PM

Your 'very good' is relative, maybe to Perodua it was not good at all.

The original conception of auto start-stop is in relation to reducing carbon emission primarily, hence why in many countries the act is under environment-related legislative. Efficiency potential may be secondary, however the science and the working circumstantial seem solid.