Michael, Any battery will continue to self-discharge, even after it is disconnected from everything. The Tesla Roadster does disable driving when the battery is below the single-digit cutoff, but I would still want a warning so I can come rescue the car! For example, if it were parked somewhere for a long term and the charge reached 5% (or even 7%), then I'd want to know about that because it's not a good idea to ignore the system and leave it when the charge is that low. It's certainly a warranty-voiding situation (although surely no Roadsters are in warranty any longer). In other words, it's not a BMS bug. Chemistry dictates that all batteries will self-discharge, even if very slowly. What I'm curious about is why other electric car owners would not also want to know if their battery was low enough to trigger an automatic cut-off. Brian On Apr 18, 2016, at 2:23 PM, Michael Balzer <dexter@expeedo.de> wrote:
Tom,
so the roadster doesn't cut off the battery to avoid deep discharging? Sounds like a bad BMS bug...
Ok, that's a very good reason why this kind of alert should be sent out on all channels available.
Thanks & regards, Michael
Am 18.04.2016 um 20:56 schrieb Tom Saxton:
Personally, I like having the second backup warning that doesn’t depend on a setting being right. It’s a big deal if our Roadster gets down to 5% accidentally.
Tom
On 4/18/16, 8:35 AM, "Michael Balzer" <ovmsdev-bounces@lists.teslaclub.hk on behalf of dexter@expeedo.de> wrote:
Hi everyone,
we've currently two low SOC alerts in the framework, one is the configurable (feature #9) min SOC alert in vehicle_ticker(), the other is the OVMS_SOCALERT code in net_state_ticker600().
The latter is fixed to 5% and does not respect user channel & notification configuration. Is there still a use case for this or is it obsolete?
Regards, Michael