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New, cheaper Level 2 charger from Bosch

Discussion in 'Model S: Battery & Charging' started by RedBlack21, May 10, 2013.

  1. RedBlack21

    RedBlack21 New Member

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  2. doug

    doug Administrator / Head Moderator

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    Should work with the J1772 adapter. At 16 amps it's a fairly slow charge. Might be enough for your needs, though.
     
  3. ZBB

    ZBB Emperor

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    #3 ZBB, May 10, 2013
    Last edited: May 12, 2013
    The article states there is also a 30amp version (with an 18 foot cable instead of 12 feet) for $600...
     
  4. Vger

    Vger Active Member

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    Great to see the home EVSE market developing and diversifying. It is hopefully a leading indicator of EV demand. I was pained to see my best friend get charged $2000+ for a LEAF connector in his garage!
     
  5. Lyon

    Lyon 2016 S P100DL, 2016 X P90D

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    At the speed that thing goes you're better off just putting in a NEAM 14-50 unless you have need of an EVSE for a non-Model S vehicle. I paid about $700 for TWO NEMA 14-50 sockets installed in my garage. I imagine that you'll have some expense associated with installing the EVSE.
     
  6. lolachampcar

    lolachampcar Active Member

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    I am not sure I understand. The UMC is $500, charges at 40 amps and has a nice little button on it to open the charge door (and, I forgot, does not require a 1772 adaptor). I guess if you are looking for one to do both your Leaf and a MS it would make sense.
     
  7. markb1

    markb1 Active Member

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    UMC is $650, now, but still seems like a better deal.
     
  8. jomo25

    jomo25 P4398

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    Well, there are a lot of people who are in such a situation, so this makes sense. The slower rate (say down to 6kW) isn't an issue since its still provides plenty for overnight charging. I have a different wall mounted J1772 unit and works great for us (MS and Volt). Who wants to keep plugging and unplugging different cables? I know its limited, but there are a couple of threads about UMC issues.

    And then there's this. The UMC isn't UL listed for those that care about that or are in situations where that matters (liability in shared spaces).
     
  9. ZestyChicken

    ZestyChicken Member

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    My mother in law lives about 200 miles away. We visit her with some regularity. Right now we just take the gasser since they haven't announced/opened the Texas Superchargers yet.

    Anyway, she drives a Volt and just charges from a 110 volt/12 amp plug in her garage. Works for her with what they drive. Not so much for my S. I was thinking of getting her one of the Bosch devices but am confused as to the difference between the 15 amp and 30 amp. Neither is going to be as fast as my 12-50 I would assume. I'm just curious about the charge rates between the two. I would like to at least get a full tank in 12 hours. Not sure if the 15 amp is going to accomplish that. The Tesla website doesn't really address using public charging stations.
     
  10. dsm363

    dsm363 Roadster + Sig Model S

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    #10 dsm363, May 13, 2013
    Last edited: May 13, 2013
    This will help a little
    Tesla Charging | Tesla Motors

    The 15A (if it allows you to charge at 15A) would take over 60 hours from empty while charging at 30A would get you there in maybe 14 hours.


    Note: the link from Tesla is for 110V so appreciate people pointing that out.
     
  11. Lyon

    Lyon 2016 S P100DL, 2016 X P90D

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    I think you've missed something there. Isn't the 16amp Bosch unit still 240v? The calculations on the Tesla page assume 15amp at 110v.

    I'm not saying the 15amp Bosch unit is super fast but if you want to figure out how fast that would charge just plug into your NEMA 14-50 and turn down the amperage in the car to 15 or 16.
     
  12. dsm363

    dsm363 Roadster + Sig Model S

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    You're right. So would that drop it to around 24 hours or so? Excellent idea.
     
  13. Lloyd

    Lloyd Active Member

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    15 amp/240v will charge at about 10 MPH. 30 amp/240v will charge at 20 mph. 12 amp/120v will charge at about 2.5 mph These are from experience with my car.
     
  14. Lyon

    Lyon 2016 S P100DL, 2016 X P90D

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    Sounds like he'll need to go with the 30amp version if he wants to top off in 12 hours.
     
  15. RandyS

    RandyS Fan of Elon

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    Looks like Bosch is private labeling these units from Delta....

    Welcome to Delta Electronics, Inc. - EV Charging Solutions

    Not really sure what is "new" about Bosch's announcement. The $449 unit only has a 12' cord and charges at 16 amps, while the more fully featured unit with the longer cord is $800...
     
  16. Rodolfo Paiz

    Rodolfo Paiz P85 "Plug and Play"

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    No, the 15A charger wouldn't accomplish that, but I think the 30A would. My prior experiences are 22mph charging at 240V/24A and 28mph charging at 240V/32A, so I'd expect roughly 25-26 mph from a 240V/30A charger. If you drive from your house straight to hers, you'll probably need 7-8 hours to do recharge back to a standard charge (8-9 to get back a full range charge if you're going back home the next day).

    Based on my experience, each round trip would save you about $100 in fuel costs. Doesn't take many trips to pay for the charger and the installation costs.
     
  17. Lloyd

    Lloyd Active Member

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    He is talking about 15 amp/240, not 15A/120V
     
  18. ZestyChicken

    ZestyChicken Member

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    #18 ZestyChicken, May 13, 2013
    Last edited: May 13, 2013
    I don't think that's right at all, though I appreciate the effort. A 110 volt outlet takes about 65 hours. This a Level 2 charger at 240 volts.

    I am no electricity expert, but I can google:

    Electrical power (Watts) = current (amps) x voltage (volts) [current is like flow rate and voltage is like water pressure]

    So, a normal plug is:

    110 volts x 15 amps [at least mine are 15] = 1650 watts
    So 85,000 kWt-h battery / 1,650 * 80% (charging efficiency which actually varies by amp due to heat losses but lets assume a flat 80) = 64 hours

    NEMA 14-50 (and combining equations):
    85,000 / (240 x 40 x 80%) = 11 hours

    Bosch 15:
    85,000 / (240 x 15 x 80%) = 30 hours

    Bosch 30:
    85,000 / (240 x 30 x 80%) = 15 hours

    I don't know how accurate my calcs are though they certainly pass the smell test. Maybe someone else a little more versed with this can weigh in...
     
  19. Lyon

    Lyon 2016 S P100DL, 2016 X P90D

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    They look spot on to me. Your best/cheapest bet might be to ask to install a NEAM 14-50 at your MIL's place. She won't be able to use it for her Volt I don't think but it's a small plug and very unlikely to get in her way.
     
  20. ZestyChicken

    ZestyChicken Member

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    Your acronym worries me...:redface:
     

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