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BYD Reveals the ‘World’s Longest-Range EV’ as American Auto Industry Struggles to Keep Pace (gizmodo.com)
submitted 6 months ago by to c/electricvehicles@slrpnk.net
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The updated Denza Z9 GT can drive up to 1036 km (644 miles) on a single charge, the Chinese automaker says.

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[–] 21 points 6 months ago* (last edited 6 months ago) (6 children)

“park it at the airport for several days” kind of charge. EV batteries can lose 1-2%/day

They really shouldn't. If yours does, something's wrong. You should take it in.

I specifically left mine in an airport parking lot for a week. The high voltage main battery didn't loose even 1%.

The basic internal electronics are powered by an old school 12v battery. It should be able to keep the parked car alive for a few weeks at least. Even if the 12v dies, a simple "jump start" from any other car will let you turn it on again and get home. Just like in an ICE car, the 12v battery will charge while you're driving.

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  • [–] 9 points 6 months ago (5 children)

    Some of the cars with parking surveillance can use a lot of electricity when parked in a busier area with a lot of movement

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  • [–] 3 points 6 months ago (4 children)

    That'll just kill the 12v faster. Won't change with the range of the high volt battery.

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  • [–] 4 points 6 months ago (3 children)

    The main battery will have to charge the 12v battery once the latter gets low enough though

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  • [–] 2 points 6 months ago (2 children)

    That won't happen while the car is parked. The 12v will just die like I said, and you'll need a jump start.

    When you start the car and activate the high volt battery it will power the 12v system, including charging the 12v battery. But only once you start the car.

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  • [–] 5 points 6 months ago (1 child)

    I have an Ionic 6. The main battery keeps the 12 volt properly charged while parked. It doesn't just let it die.

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  • [–] 1 point 6 months ago

    Interesting. When I looked into how my 5 works. I was read it was as as I described.

    I've only had it 6 months now. And it only sat parked and unplugged for an extended time, the once at the airport. So I've never really tested directly.

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