I'd be more concerned about the aux battery, than the traction pack.
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According to this article, the Bolt (when unplugged) will wake up every 3 days and check the SOC of the 12v battery, and charge it if required for as much as 90 minutes. So guess the engineers at GM have thought of everything.
That works!
Whenever we'd travel out of LAX in the late '90s, we'd drive the EV-1, and park in Lot 6 (for free!). After a two-week trip, coming back to find a dead aux battery was not unusual, if the battery was more than a year or two old. Fortunately, we had a "boost button" under the dash that would siphon off some traction pack juice to get it started, then the DC-DC would take over.
That GM handled dead aux batteries in this manner twenty years ago, and the Bolt doesn't have this feature today is frankly puzzling.
Another nice feature the EV-1 had was that it would "warble" the horn at a low level if you pulled on the brights at low speed. It prevented pedestrians from jumping out of their shoes from a horn blast if you crept up on them in a parking lot.
I suppose the low-speed noise maker in the Bolt is supposed to take care of that.
It doesn't.
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