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A comment on Tesla voids warranty if you try to power your home with your car. Parent comment

Re:Tesla voids warranty if you try to power your home with y... by nkingsy on Monday March 01, 2021 @12:12PM (#26305103)
pulling that kind of wattage from a 12v car battery will destroy it in short order, and I’m not sure it can even discharge that fast.

Last time our power went out I charged my 48v ebike battery off of my leaf’s 12v, then used that to power a big inverter to run the fridge.

Now I have some dedicated solar that can charge the ebike, so no need for shenanigans.

Anyone looking to do this, there are challenges, and don’t do it with a battery that isn’t built for serious discharge (mine is 1.7kwh and rated for 3k watt bursts). Most off the shelf ebike batteries will not tolerate that kind of abuse.

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Re:Tesla voids warranty if you try to power your home with y... by benlivengood on Monday March 01, 2021 @02:11PM (#26306839)
All car batteries will provide over 3KW since they're rated for 300-900 cold-cranking-amps but efficiency and capacity are pretty low at those rates.
[ Parent | on HN ]
Re:Tesla voids warranty if you try to power your home with y... by turtlebits on Wednesday March 03, 2021 @05:15PM (#26335488)
Most batteries are rated to pull very high amps for a short period of time. Not for hours on end.
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