Battery flat

[PJ4814]

Hello, once the main battery goes flat after driving in EV mode, is there a separate 12 volt battery that allows the petrol motor to start?
If the vehicle is running in EV mode all the time, what stops the 12 volt battery from going flat?
Regards to all
PJ

 

[twiggy144]

I know for the 2022 model years and up, there is no conventionnal 12 volt starter. I am not familiar with previous model years. The generator acts as a starter. Tjerefore the generator needs to be fed by the main battery. The main battery recharges the 12 auxiliary volt battery as needed.

 

[Haenzel]

Hello, once the main battery goes flat after driving in EV mode, is there a separate 12 volt battery that allows the petrol motor to start?
If the vehicle is running in EV mode all the time, what stops the 12 volt battery from going flat?
Regards to all
PJ

The main battery won't go flat. Once the range is zero there is still appr. 30% charge left in the main battery.

 

[PHEV07]

I know for the 2022 model years and up, there is no conventionnal 12 volt starter. I am not familiar with previous model years. The generator acts as a starter. Tjerefore the generator needs to be fed by the main battery. The main battery recharges the 12 auxiliary volt battery as needed.

I believe all Outlander PHEVs from 2014 use the Main Battery to start the ICE and do not use a 12V starter.

 

[twiggy144]

The main battery won't go flat. Once the range is zero there is still appr. 30% charge left in the main battery.

30% is a lot.

I have a power meter, and started using it yesterday when recharging Mitsu. The power meter measures voltage, amps instant kw , and accumulated kwh from my last reset to zero. My objective is to measure true kwh used when recharging at home.

I will start a new thread with my findings once I have sufficient data for discussion, (probably in a week or so). But so far, I can report I have recharged once with the power meter, from 1 bar of battery SOC % to 15.5 bar of battery SOC % ( on a scale of 16 bars) or if you prefer from 6.2% to 96.9%. This is a net charge of 90.7%. The charge time was 15 hours, on 115 volts power source. The accumulated kwh on the power meter is 18 kwh, which is 90% of the claimed battery capacity of 20 kwh. I conclude that the figures are so close to each other ( only 1% difference) , that all readings are valid and concur each other.

This being said, the operable capacity of the battery seems to be 20 kwh as claimed by the manufacturer. Would there be really a 30% reserve left in the battery, which translates to or 6 kwh, when it indicates zero or close to zero? Seems a lot.

 

[PHEV07]

30% is a lot.

I have a power meter, and started using it yesterday when recharging Mitsu. The power meter measures voltage, amps instant kw , and accumulated kwh from my last reset to zero. My objective is to measure true kwh used when recharging at home.

I will start a new thread with my findings once I have sufficient data for discussion, (probably in a week or so). But so far, I can report I have recharged once with the power meter, from 1 bar of battery SOC % to 15.5 bar of battery SOC % ( on a scale of 16 bars) or if you prefer from 6.2% to 96.9%. This is a net charge of 90.7%. The charge time was 15 hours, on 115 volts power source. The accumulated kwh on the power meter is 18 kwh, which is 90% of the claimed battery capacity of 20 kwh. I conclude that the figures are so close to each other ( only 1% difference) , that all readings are valid and concur each other.

This being said, the operable capacity of the battery seems to be 20 kwh as claimed by the manufacturer. Would there be really a 30% reserve left in the battery, which translates to or 6 kwh, when it indicates zero or close to zero? Seems a lot.

Thanks taking the time to do this.

I have another possibility, just not sure how it can be measured.

Most if not all Manufacturs claim that there is a reserve Capacity on their Battery Packs.

I wonder if it may be possible that the actual Battery Size may be larger than the reported 20kWh Battery and the usable size of the Battery to be 20kWh

Personally I doubt that this is the case but still, could it be a possibility?

I wonder

 

[twiggy144]

I do think the physical battery capacity is greater than the nominal claimed capaciyt, but I dont think not as much as 30%.

 

[4havnfun]

30% is a lot.

I have a power meter, and started using it yesterday when recharging Mitsu. The power meter measures voltage, amps instant kw , and accumulated kwh from my last reset to zero. My objective is to measure true kwh used when recharging at home.

I will start a new thread with my findings once I have sufficient data for discussion, (probably in a week or so). But so far, I can report I have recharged once with the power meter, from 1 bar of battery SOC % to 15.5 bar of battery SOC % ( on a scale of 16 bars) or if you prefer from 6.2% to 96.9%. This is a net charge of 90.7%. The charge time was 15 hours, on 115 volts power source. The accumulated kwh on the power meter is 18 kwh, which is 90% of the claimed battery capacity of 20 kwh. I conclude that the figures are so close to each other ( only 1% difference) , that all readings are valid and concur each other.

This being said, the operable capacity of the battery seems to be 20 kwh as claimed by the manufacturer. Would there be really a 30% reserve left in the battery, which translates to or 6 kwh, when it indicates zero or close to zero? Seems a lot.

The charging process isn’t 100% efficient. I expect that when you add 20 kWh to a battery you’re probably losing ~2-4 kWh due to loses in the charger and in the charging process of the cells. The loses are higher at 120V than at 240V. According to my L2 charger, the most I’ve ever added to my battery during a charging session is 16.07 kWh.