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As per @RunningStrong and you need the car at home during the day. I'm retired so the ampera can sit charging when the sun's out.
We charge ours from the panels but need a sunny day in spring summer or autumm. The house battery keeps the car charging when clouds go over.
This is 9.6kWp setup and today, a sunny one it generated 15kWh with a peak of 3kW from 11 to 12, this went into the house consumption, cooking, hot water etc., keeps the use of peak rate electricity to 0, topped the battery up but not to the car, not needed today.
The car will get charged on cheap rate this weekend, possibly with some solar if there is excess.
 

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You need about 12kWh to fully charge the amp but there is a problem, charging and discharging batteries loses power, so to get 12 to the amp you need 14 going into the battery and some clever circuits to prevent the battery powering the house.
Here the battery runs the house if there is not enough solar. In winter the battery is charged from cheap rate, go in our case. It works, very little full price electric is used even in darkest winter.
 
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