1. Attachments are working again! Check out this thread for more details and to report any other bugs.

Where can I buy an after market battery pack

Discussion in 'Gen 2 Prius Main Forum' started by Luke101, Apr 21, 2012.

  1. Luke101

    Luke101 New Member

    Joined:
    Apr 21, 2012
    1
    0
    0
    Location:
    Rowlett, tx
    Vehicle:
    2009 Prius
    Model:
    N/A
    The prius stock battery is weak compared to my wifes Mercury Mariner battery. The Mariner acceleration on battery alone is excellent - she can get up to 30 mph in no time on just the battery. In my prius it has very slow acceleration at a dead stop while running only on battery. Is it possible to buy aftermarket (stronger) batteries for the prius so I can at least driver the car up to 30 mph only on battery?
     
    #1 Luke101, Apr 21, 2012
  2. Britprius

    Britprius Senior Member

    Joined:
    Jun 14, 2010
    5,194
    1,917
    0
    Location:
    Herefordshire England
    Vehicle:
    2008 Prius
    Another battery will not improve the acceleration of the Prius in fact it will probably slow it down due to it's wieght, as it is not the main factor. The limiting factor is the maximum output of the HV inverter that I believe is 25KW "don't quote me" MG2 is rated at 50KW. The inverter converts the nominal 201v dc to 500ac 3phase variable frequency to drive the motor.
     
    #2 Britprius, Apr 22, 2012
  3. Paradox

    Paradox Prius Enthusiast / Moderator
    Staff Member

    Joined:
    Sep 22, 2005
    29,110
    8,589
    201
    Location:
    USA
    Vehicle:
    2014 Prius v wagon
    Model:
    Five
    Simple answer, no. You could either ocnsider a 2012 Plug-in Prius or do a conversion to yours to Plug-in and get brisk all EV acceleration.
     
    #3 Paradox, Apr 22, 2012
  4. uart

    uart Senior Member

    Joined:
    Sep 7, 2009
    4,215
    1,201
    0
    Location:
    Australia
    Vehicle:
    2005 Prius
    Hi Luke. Do you have the EV button (EV mod) in your Prius? Without this you have to accelerate very gingerly in order to keep it in electric mode. Is this the slow acceleration you are referring to?

    With the EV mod the Prius can accelerate moderately well up to about 30 mph on electric alone, however it is almost always undesirable (from a fuel efficiency perspective) to do so.
     
    #4 uart, Apr 23, 2012
  5. usnavystgc

    usnavystgc Die Hard DIYer and Ebike enthusiast.

    Joined:
    Jul 29, 2011
    3,159
    989
    0
    Location:
    Tucson, AZ
    Vehicle:
    2005 Prius
    Model:
    Four
    The Mariner may be able to accelerate to 30 on batt alone but, it is nowhere near the mpg king the Prius is. My advice is, go ahead and accelerate to 30 as fast/robust as you want, use the engine. You'll still beat the Mariner by at least 10 mpg's (easily). With some proper hypermiling, you can beat it by 20.
     
    #5 usnavystgc, Apr 23, 2012
(You must log in or sign up to post here.)