Since covid most weeks it only gets driven once, a 45 km/30 mile round trip. Cold start capacity according to en standard.

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You would see the system voltage change with temperature, going up the colder it was.

Stop start battery voltage. A similar protective mechanism operates in the following cases: So you can use a large cap like @andys said. Discussion starter · #1 · jan 21, 2019.

Stop start is not voltage related more ah capacity of the battery as monitored by the energy management on the van. Modern cars with start/stop start at a disadvantage in that the system which controls the battery charging maintains it at 80% state of charge, to allow reserve capacity to absorb smart alternator charging under deceleratioin and braking. When braking, some of the power developed from that braking is used to boost the battery.

While the soc can be simply determined with a voltage measurement, a complex test procedure is required to test the soh, in order to make a reliable. It still starts first time despite being parked out in the open in sub zero overnight temperatures at this time of year. It shut down with the dire battery voltage warning x2 before i was done.

So i’ve been getting a “stop/start not available battery charging” message for a few months now. I took the truck out the next day, and for about 25 minutes, the auto start / stop was suppressed for voltage or battery or whatever the message is in the menu. Or run the amps from a leisure battery setup.

There is a voltage sensor on the negative battery terminal. Because of the way the battery is discharged it is necessary to. Or maybe your battery needs checking.

Or fit a stop start disable mod. If there is any corrosion the correct voltage will not be read causing the system not to work. Car is 5 years old now and had it from new so battery is due for replacement.

Advanced technology for idle stop start systems iss market demand in 2016 it is estimated that 70% of cars driven in some countries will have stop start technology. In australia leading manufacturers have already introduced vehicles featuring iss technology. Battery voltage is down to 12.3 volts in the morning before starting the engine.

My stop/start doesn't work very often and only after a good run. My 8yo forester has stop/start and still has the oem battery. You can use the same car battery voltage readings as a guide.

All depends on the charge state of the battery. This includes but not limited to mazda, subaru, nissan, vw, bmw, mercedes, volvo. It’s brand new, my last f150 battery lasted 8 years.

Now, you will see the voltage change several times in a minute or not at all for hours. About every 3 or 4 days i’d have the message pop up for over an hour and often not go back to a normal “stop/start ready” until it was turned off and restarted. There is a small electrical plug that goes to it.

Make sure these connections are clean. The alternator takes about 10% of the engines power so when the battery is charged the ecu (engine control unit) turns off the alternator saving power and fuel.