Another possibility for charging, though probably a long shot.. If your garage happens to have two outlets on separate phases, you can create a 240v / 15 amp circuit with just plugs and wires. Search for "Quick 220". QCP used to sell them (out of stock), but there are ways to build your own with common home hardware store parts. Charge at 240v /12 amps and you should be fine.
Or, it might be possible to squeeze a new pair of 120v / 20 amp circuits to your existing panel by doubling up on some of the existing breakers, then do the Quick 220 thing from that. That would take an electrician and some wiring, but you might avoid an entire panel swap.
I was looking at adding a 14-50 outlet to my garage, to let the dryer have its own exclusive plug, and asked an electrician what it would take. Good thing I asked. Turns out that I had a Zinsco-brand panel from when the house was built (early 1980's). They had stopped making them some years ago because they tended to "fail", as in "catch fire". The electrician was surprised that it hadn't been replaced yet. So, we did that! And while were were at it (and with his guidance) I crawled under the house and strung the wires for the 14-50 and a pair of 15-20's for just the parts cost. Both I and my car sleep much better at night as a result.
Both higher temps and higher current shorten battery life, but there was one study where they found that faster charging means the battery spends less time at an elevated temperature, and that shorter elevated time offset the negative effects of the higher current. I try to keep my battery at 30c or below, both for health of the battery and to let the car (and the little pump) go to sleep at night. I charge mine on 240v at 24 amps, and it seems to work out fine. I could go to 40 amps, but there's no hurry, and the lower current is nicer to the big relay in the wall charger, and to the overall heat equation. I think the efficiency sweet spot is around the 24-30 amp range..
Or, it might be possible to squeeze a new pair of 120v / 20 amp circuits to your existing panel by doubling up on some of the existing breakers, then do the Quick 220 thing from that. That would take an electrician and some wiring, but you might avoid an entire panel swap.
I was looking at adding a 14-50 outlet to my garage, to let the dryer have its own exclusive plug, and asked an electrician what it would take. Good thing I asked. Turns out that I had a Zinsco-brand panel from when the house was built (early 1980's). They had stopped making them some years ago because they tended to "fail", as in "catch fire". The electrician was surprised that it hadn't been replaced yet. So, we did that! And while were were at it (and with his guidance) I crawled under the house and strung the wires for the 14-50 and a pair of 15-20's for just the parts cost. Both I and my car sleep much better at night as a result.
Both higher temps and higher current shorten battery life, but there was one study where they found that faster charging means the battery spends less time at an elevated temperature, and that shorter elevated time offset the negative effects of the higher current. I try to keep my battery at 30c or below, both for health of the battery and to let the car (and the little pump) go to sleep at night. I charge mine on 240v at 24 amps, and it seems to work out fine. I could go to 40 amps, but there's no hurry, and the lower current is nicer to the big relay in the wall charger, and to the overall heat equation. I think the efficiency sweet spot is around the 24-30 amp range..