Marco
Posts: 3
Joined: Sun May 10, 2015 11:51 pm

usable battery capacity over time and mileage

Tue May 12, 2015 7:10 pm

Since the temperature rise up to around 68-72F (QC-mtl area in Canada) i'm following the "Batt. Kappa. Max" value from the service menu. I'm logging usable battery capacity over time and mileage. After 10k miles, my BEV i3 are showing 19.3 kWh. Curiously, last week after a peak of outside temp that has reached 82F, i observed a drop to 18.2. until that time the outside temp came back to 70F, but "Batt. Kappa. Max" seem limited to 18.2-18.4kWh

Are you experiencing this kind of behavior with yours i3 battery ?

jadnashuanh
Posts: 3500
Joined: Thu May 22, 2014 2:07 pm
Location: Nashua, NH USA

Re: usable battery capacity over time and mileage

Tue May 12, 2015 7:32 pm

Not sure how many people go into the service menus to view that sort of thing...
Jim DeBruycker
2011 535i x-drive GT, 2014 i3 BEV

jjaume
Posts: 11
Joined: Fri Apr 25, 2014 2:19 pm
Location: Terres de l'Ebre

Re: usable battery capacity over time and mileage

Mon May 25, 2015 7:42 am

Where can i see the usable batery capacity? I don't know how do it.

jadnashuanh
Posts: 3500
Joined: Thu May 22, 2014 2:07 pm
Location: Nashua, NH USA

Re: usable battery capacity over time and mileage

Mon May 25, 2015 10:39 am

jjaume wrote:Where can i see the usable batery capacity? I don't know how do it.

It's in the service menu, not normally (or easily, at least the first time!) accessed by the owner, which is why they don't tell you about it - it is designed for the service center.

But, if you search on service menu, you'll find the sequence of button presses required to access it.
Jim DeBruycker
2011 535i x-drive GT, 2014 i3 BEV

jjaume
Posts: 11
Joined: Fri Apr 25, 2014 2:19 pm
Location: Terres de l'Ebre

Re: usable battery capacity over time and mileage

Fri May 29, 2015 8:29 am

Anybody know how can i see the usable batery capacity? I don't know how do it.

Jeffj
Posts: 252
Joined: Mon Sep 15, 2014 12:32 pm
Location: Boulder, CO

Re: usable battery capacity over time and mileage

Fri May 29, 2015 10:07 am

Copied from file in the Facebook group, details published by Dean Upton

Hidden Service Menu on Instrument Cluster
By Dean Upton on Saturday, October 4, 2014 at 7:30pm
To enter the menu, hold down the trip meter button on the side of the instrument cluster screen for 10 seconds. From then on, pressing this button means "next" and holding down the button means "select".

To begin with you have only these options available:

1 Identification
1.01 Conv. Index (1/mls)
1.02 SWFL 1
1.03 VIN
1.04 HMI Version
2 System test
3 Start roller
10 Unlock

To unlock the following menus, you will need the VIN from 1.03 above. Add the last FOUR digits together (other BMW models require adding the last five digits) to get your unlock code. e.g if your VIN is L12345, your code is 2+3+4+5=14. If that doesn't work, try adding the last five digits.

11 Consumption
11.01 Consumption dist. (l/km)
11.02 Consumption time (l/h)

12 Range
12.01 Range consumption (l/100km)
12.02 Range (km)

13 Fuel Tank/Battery
13.01 tank left (ohm)
13.02 tank right
13.03 tank left (litres) - zero
13.04 tank right 7.9l
13.05 tank total
13.07 display value
13.07 tank phase. 1
13.08 Batt. Kapa. Max. 19.8 kWh (maximum designed battery capacity)
13.09 State of charge
13.10 Batt. Ladung (battery charge)
13.11 Batt. Anziege (battery meter indication)

14.01 O. Temp. Sensor
14.02 O. Temp. Raw data
14.03 coolant temp
14.04 oil temp
14.05 batterietemp

15.01 litre counter
15.02 time counter
15.03 distance counter
15.04 kWh-Zaehler ("kWh counter")

16.01 v CAN (km/h)
16.02 v Display (km/h)
16.03 Cruise Control (km/h)
16.04 Rev. Counter (1/min)

17 System Voltage
17.01 Ubatt (V)

18 Accoustics
19 DTC
20 Dimming LCD
20.01 LCD temp. Sensor (ADC)
20.02 LCD temperature (C)
20.03 Light sensor
20.04 LCD luminance

21 Dimming PWM
21.01 Dimming wheel
21.02 Display
21.03 Scales/pt. orange
21.04 Underfloor pointer
21.05 Status lights
21.06 Status lights blue

22 CBS (condition based service)
22.01 km/year short term (km)
22.02 service call status
22.03 Limit, time (Month)
22.04 Limit, distance (km)

23 Check
24 Correct. Factor (careful!)
25 software reset

jjaume
Posts: 11
Joined: Fri Apr 25, 2014 2:19 pm
Location: Terres de l'Ebre

Re: usable battery capacity over time and mileage

Mon Jun 01, 2015 1:17 am

Thanks Jeffj

Georgios
Posts: 5
Joined: Sun Jan 17, 2016 5:06 am

Re: usable battery capacity over time and mileage

Tue Jan 19, 2016 2:48 pm

Never measured it in warm conditions, but this winter it's on 18.4kWh.

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