Granny charger vs 7kw
Discussion
Sorry if this has been covered hundreds of times already, but, do I really need a 7kw charger?
Got an EV arriving in the next few weeks, with current usage it'll cover 7k/yr, say 10 miles Mon-Fri, with the rest at the weekend. If I drop onto an EV tariff (I assume I can even with a granny charger), then I can set the car to charge during the off peak hours and add at least 13kw within the 6hr window.
The car will have a useable battery of 62kw, and I've pessimistically estimated the efficiency to be 3m/kw. In order to maintain a decent available range at all times I've estimated I'd need to charge the car overnight once a week on a 7kw, and once every 2 days on a 3pin.
Now, my installation isn't straight forward, so I've estimated £500 for a 7kw charger, and £500 labour, whereas getting an external 3pin fitted would be around £100.
So, for 7k/yr would you bother paying £900+ for a 7kw, or just stick with the 3pin?
Got an EV arriving in the next few weeks, with current usage it'll cover 7k/yr, say 10 miles Mon-Fri, with the rest at the weekend. If I drop onto an EV tariff (I assume I can even with a granny charger), then I can set the car to charge during the off peak hours and add at least 13kw within the 6hr window.
The car will have a useable battery of 62kw, and I've pessimistically estimated the efficiency to be 3m/kw. In order to maintain a decent available range at all times I've estimated I'd need to charge the car overnight once a week on a 7kw, and once every 2 days on a 3pin.
Now, my installation isn't straight forward, so I've estimated £500 for a 7kw charger, and £500 labour, whereas getting an external 3pin fitted would be around £100.
So, for 7k/yr would you bother paying £900+ for a 7kw, or just stick with the 3pin?
also on the 3 pin life. as long as you keep on top of it and know ahead of time when you are going on longer trips etc its managable. Also on IOG and been fine. a bit annoying if they go ahead with the 6 hour limit at least in its iteration where its 6hr total wether its 6hr total smart charging vs 6hrs max outside the overnight window. but should still manage
the only problem really is if you have longer trips back to back. in which case may have to bite the bullet and public fast charge for those occasions.
the only problem really is if you have longer trips back to back. in which case may have to bite the bullet and public fast charge for those occasions.
I spent the first 12 months / 8k miles using granny charger only (i think I used a public charger 3 times, and one of those was to see how they work). No issues at all.
I only had a 7kw installed when my wife also got an EV a few weeks ago because she does 20k a year, otherwise I'd never have been able to justify the cost.
I only had a 7kw installed when my wife also got an EV a few weeks ago because she does 20k a year, otherwise I'd never have been able to justify the cost.
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