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Ampera first thoughts - charging

Discussion in 'General Charging Discussion' started by John Donald, Jan 6, 2017.

  1. John Donald

    John Donald New Member

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    EV:
    Vauxhall Ampera
    Good morning all.

    Picked up the car yesterday - 2014 Ampera with 14k on the clock. Very nice. Anyway...

    I commute daily from Gatwick to Deptford in London via M23 - M25 - A2. Total distance approx. 45 miles.
    Last night, I charged the car at home for approx. 10 hours which gave a full charge. It got me to Bexleyheath on the A2 which I was very pleased with. Over 200mpg for the whole journey!

    When I plugged it in (to the mains) at work this morning, the display told me that charging would be complete at 8.30pm - that's 9 or so hours. Just wanted to ask if this was normal, and whether there is any way of speeding it up.

    Also, electricity costs - presumably it would cost the same to fully charge the batteries (ie at home) whether it took an hour or 20 hours?

    Thanks guys. I am new to EVs, so would appreciate any assistance. The car is white and I live in Horley near Gatwick airport. Give us a wave.

    :) John
     
  2. gladini

    gladini Active Member Speak EV Supporter

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    Location:
    Hampshire
    EV:
    Volkswagen Golf GTE
    John .. at home ... do you use a 13amp 3pin plug, or, a 32amp Rolec Electrician installed job?
    If the first, the second might sort your speeding up answer.
     
  3. John Donald

    John Donald New Member

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    EV:
    Vauxhall Ampera
    Thank you. Yes I use the 13A 3-pin socket. I have just emailed Chargemaster to see about getting a charge point put in.
     
  4. HandyAndy

    HandyAndy Well-Known Member

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    Location:
    Winchester
    EV:
    Vauxhall Ampera
    John, Ampera full charge takes almost exactly 12 kWh for the 10.4 you'll see reported as used. So a 16 or 32A Chargemaster/Rolec etc will charge car at its max rate, 14A, so that's about 3.2 kW. So in theory should take 3.7 hours, in practice more like 4 to 4.5 I think. On your granny EVSE you should be able to select 6 or 10A rate, taking appx 10 hours or 6 hours respectively. Something like that.

    People here recommend running the granny EVSE at 6 rather than 10A, as less chance of overheating sockets/wiring, assuming you can spare the extra time!
     
    Last edited: Jan 6, 2017
    John Donald likes this.
  5. donald

    donald Well-Known Member

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    You have left it in '6 Amp' charge mode, which takes 10 hours or so. You can set it to 10 Amp mode which takes around 6 hrs.

    Don't take this the wrong way but.... RTFM! :D
     
    John Donald likes this.
  6. John Donald

    John Donald New Member

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    EV:
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    Hahaa. NEVER read instructions. Ever.
     
  7. John Donald

    John Donald New Member

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    EV:
    Vauxhall Ampera
    Thanks. I have switched to 10A charging and it has decreased expected charging time by 3 hours.
     
  8. Colin

    Colin Well-Known Member

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    Location:
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    Nissan LEAF 24
    John Donald likes this.
  9. donald

    donald Well-Known Member

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    Do check the plug temperature after an hour or so of charging, though. At 10A a dodgy socket may risk overheating. A good condition socket should be fine, and your 3 pin will be body-warm only, but not hot.
     
    John Donald likes this.
  10. hopbackguy

    hopbackguy Well-Known Member Speak EV Supporter

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    Location:
    Horndean, Hampshire
    EV:
    Vauxhall Ampera
    Do make sure that the socket you've plugged the evse into isn't getting too warm - 10A continuously for about 6 hours is usage that socket has probably never had before.
     
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