When setting Notifications (parameter #3) to "IP" or "SMSIP" I finally receive alerts - including Minimum SOC (feature #9) ;)

The 12V Critical Alert triggers quite often, even if my 12V-battery is new and in top condition.
I've measured that the car_12vline reports ~0,5V less than the real battery voltage, so I plan to change the file net.c (line 1458) from:
 
   // Trigger 12V alert if voltage <= ref - 1.5 V:
    if (!(can_minSOCnotified & CAN_MINSOC_ALERT_12V)
            && (car_12vline <= (car_12vline_ref - 15)))
    {
      can_minSOCnotified |= CAN_MINSOC_ALERT_12V;
      net_req_notification(NET_NOTIFY_12VLOW);
    }

to:

    // Trigger 12V alert if voltage <= ref - 1.5 V:
    if (!(can_minSOCnotified & CAN_MINSOC_ALERT_12V)
            && (car_12vline <= (car_12vline_ref - 20)))
    {
      can_minSOCnotified |= CAN_MINSOC_ALERT_12V;
      net_req_notification(NET_NOTIFY_12VLOW);
    }

and compile it to a local hex-build and test in on my Think City.
Keep you posted about the result.

Best regards.
Håkon


2013/10/30 Mark Webb-Johnson <mark@webb-johnson.net>

Can someone try it at 2.0V (rather than 1.5V) and see if it solves the false-alerts problem?

Regards, Mark.

On 29 Oct, 2013, at 5:10 pm, Rolf Welde Skeie <rwskeie@gmail.com> wrote:

> Ok, it seems like a few have similar issues.
> The logic behind the calculations seems to be reasonable, it is the assumption that there is a 1.5V difference between charging/non-charging state which is not generally applicable.
> From my observations it seems like increasing this to 2.0V would take care of most mis-firing events.?..
>
> Disclaimer: I'm not an expert on batteries...
>
> Running on 2.5.5 experimental/TC
>
> Rolf
>
> On 10/29/2013 10:00 AM, Matt Beard OVMS wrote:
>> Yup, I also get this message and it would be great if it were working
>> properly, but it actually fires at 13.1V which is far too high.
>>
>> Matt
>>
>>
>>
>> On 29 October 2013 08:46, Rolf Welde Skeie <rwskeie@gmail.com
>> <mailto:rwskeie@gmail.com>> wrote:
>>
>>    I have the following features set:
>>    #0=1, #8=1, #9=1, #15=1, all others =0.
>>
>>    Can't remember which one made it work, but one of them did, my guess
>>    would be #9 :)
>>
>>    Rolf
>>
>>
>>    On 10/29/2013 09:38 AM, Håkon Markussen wrote:
>>
>>        I never get this alert.
>>        I have a Think City (as Rolf Skeie) and use the iOS-app.
>>        I have tested on both an exhausted aux-battery and on a brand new
>>        battery in perfect condition.
>>
>>        Br.
>>        Håkon
>>
>>
>>        2013/10/29 Thomas Bergo <thomas.bergo@gmail.com
>>        <mailto:thomas.bergo@gmail.com>
>>        <mailto:thomas.bergo@gmail.com <mailto:thomas.bergo@gmail.com>__>>
>>
>>
>>             I'm also get this alert.
>>
>>             Regard, Thomas
>>
>>             tirsdag 29. oktober 2013 skrev Rolf Welde Skeie følgende:
>>
>>                 Hi,
>>
>>                 I'm getting 12V battery alerts ala:
>>                 "MP-0 PAALERT!!! 12V BATTERY CRITICAL (13.2V, ref=14.7V)"
>>
>>                 So the 1.5V hardcoded difference between charged and
>>        non-charged
>>                 state seems to be too low. The battery is working just
>>        fine and
>>                 has been tested without any issues, but seems to
>>        stabilize at
>>                 approx. 12.8V.
>>
>>                 Is this a global issue; are others experiencing this as
>>        well?
>>
>>                 If this is a issue only relevant to my car: would it
>>        make sense
>>                 to allow for controlling some of these kind of values
>>        through
>>                 parameters?
>>
>>                 BTW, I believe the Think City module could be put in the
>>                 production builds, it seems to be working fine.
>>
>>                 Best regards
>>                 --
>>                 Rolf Welde Skeie
>>                 Solåsen 27, 5223 Nesttun, Norway
>>        +47 92403016 <tel:%2B47%2092403016> <tel:%2B47%2092403016> /
>>        rwskeie@gmail.com <mailto:rwskeie@gmail.com>
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>>    --
>>    Rolf Welde Skeie
>>    Solåsen 27, 5223 Nesttun, Norway
>>    +47 92403016 <tel:%2B47%2092403016> / rwskeie@gmail.com
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