This. Also, if the capacity drops enough that the range really isn’t useful to you (and you can’t sell it on to anyone else who has lower range needs), just par

This. Also, if the capacity drops enough that the range really isn’t useful to you (and you can’t sell it on to anyone else who has lower range needs), just park it up in your garage or driveway and wire it back in to your mains electricity. No blackouts ever again and half-rate electricity on nighttime tarriffs. Bargain.