Re: measuring capacity loss through CanIon
Posted: Sat Jan 20, 2018 8:47 am
yes there are many cheap clones out there. Only buy from scantool.net to get a real OBDLink LX. ebay is full of counterfeit obdlink devices.
Mitsubishi Imiev Electric Vehicle Forum
Barbagris wrote:Does anyone know why I do not have any reading in the Ah field?
CanION is updated, the car is a clone (Peugeot) and the OBD-II is an STN1170.
Everything measures perfectly, just does not give me any value for "Ah"
matija wrote:Greetings everyone,
I have recently noticed that cani0n is now showing the Ah value of our battery modules. This raises few questions.
What is the new value of our Yuasa LEV50 cells ? They are branded as 50Ah. I doubt cani0n would really show 50 in brand new car. But if it would that means I have lost nearly 30% as cani0n shows 35.25Ah for me.
Aerowhatt wrote:Perhaps just give it some time. I know that when I plugged my wife's "i" into the canion app it did not register AH for hours if not a day or more. If memory serves canion was monitoring a charge cycle when it popped up. Looks to me like it's canion that stores the history etc. So from what I saw the first reading took a while to show up.
DBMandrake wrote:Nominal rated cell capacity is 50Ah, but the BMS on the car does not charge the cells to 100% (4.2 volts per cell) but only to 4.1 volts per cell. Depending on what reference you take as gospel, 4.1 volts on a cell chemistry that is 100% charged at 4.2 volts is about 90% charged.
If this is the case, the usable cell capacity brand new will only be about 45Ah, and certainly not 50Ah when the cells are only charged to 4.1v. Evbatmon apparently uses a figure of 46Ah, so for lack of a better figure I have been basing my degradation measurements on 100% SoH = 46Ah.
The temperature reading is not correct as Canion doesn't read cell temp (and cell voltage) at all at 2015 I-miev and later.
kiev wrote:Is this really true? It is the first i have heard of Canion not working for later models, and would indicate that Mitsu changed the CAN PIDS for these measurements. Have Martin and Xavier been made aware of this?
I WAS WRONG! What I was seeing was the stored Ah reading from previously using the OBDLink. No wonder my Ah reading had not changed for a year!JoeS wrote:Barbagris, my fairly old STN1170 from AH Design works just fine using CaniOn v141 and gives me Ah reading.