EV general discussion

Jonnycoupe said:
Yeah easy £1k then £80 for longer cable and another couple of hundred for the wooden face panel. Looks great though!
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I went for both of those, and it does look good (repost):

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It's also made in the UK and is upgradeable in the future. :)
 
Shadowness said:
Isn't the issue not how fast it can charge, but how long it will last being charged at that rate? (ie how many years before it's knackered)
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The article touches on longevity.

To recharge, batteries need to heat up to around 60C (140F) and then cool down when they are not being used.

Despite their small size, the batteries produce a large amount of power in a matter of seconds and have a lifespan of 2 million miles, the researchers said.

Professor Wang said: "An electric vehicle with this battery could go from zero to 60mph in three seconds and would drive like a Porsche.
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That's where (uniquely ?) tesla with its - I'm approaching a feeding station, let's warm the batteries up, strategy, comes into its own
 
I wouldn’t get too excited, it’s just another small scale lab battery. Come back when it’s actually starting mass production. They also don’t disclose what the actual pack size is or if they have actually built and tested a full pack and not just scaled up a few cells.

The issue also becomes how quickly you can actually deliver the power to the car. 250 miles / 4 miles per kWh = 62.5kwh in 10 mins from a rapid charger. So the average charge speed over 10 mins is 375kw. I’d imagine peek speed is over well over 500kw.

In theory a 170kwh ish equipped Tesla could meet those specs if they made a charger that could driver the power.
 
If you look at the current state of the Tesla V3 chargers, they are quite capable of putting 70% charge in (from 2-5%) in 20 minutes in a M3 LR, which is ~250 Tesla miles (200 real miles), and that is on the current chemistry with 2170 cells. The 4680's should be able to accept a higher charge current for longer, and therefore even on the limited 250kW chargers maybe able to sustain the peak charging speed for longer, and maybe hit 200 miles in 12-15 minutes, taking into account increased power density.
 
Here's a question....

I currently have a 7kw home charger at the side of my house. We've just ordered a second EV, and want to park it right at the end of our driveway. Can the cable feeding the home charger be split into two in order to power a second charger?

Reading on the SpeakEV forums, because I've ordered another EV I can claim a second discount for another charger? If true, would be great.
 
Some chargers can be daisy chained but they tend to be more expensive. They’ll load balance and two cars will charge at half speed if plugged in.

Do you have a spare slot on your consumer unit? If so just run a second wire and a new charger. Two cars will charge at full speed.
 
b0rn2sk8 said:
Some chargers can be daisy chained but they tend to be more expensive. They’ll load balance and two cars will charge at half speed if plugged in.

Do you have a spare slot on your consumer unit? If so just run a second wire and a new charger. Two cars will charge at full speed.
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Yeah I wondered about that, but the only problem is that the cable going from the unit to the charger has to run along the front of the house, and through a small gap behind the front door step. There's no room for a second cable.
 
I think this is one of those times where a picture/diagram would help. Could you go over the door rather than under?

might be better to make a dedicated thread in home and garden, plenty of electricians on there which will weigh in.
 
Ohme installed and it's only letting me choose Tesla from the list of available cars. Waiting for tech support to call me back.
 
TheOracle said:
Yeah I wondered about that, but the only problem is that the cable going from the unit to the charger has to run along the front of the house, and through a small gap behind the front door step. There's no room for a second cable.
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Can you get a standard commando socket fitted, and then use the commando version of the Ohme to simplify things?
 
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