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

When does Charge Mode make sense?

Discussion in 'Prime Main Forum (2017-2022)' started by iskey, Apr 7, 2017.

Page 4 of 4
  1. john1701a

    john1701a Prius Guru

    Joined:
    Jan 6, 2004
    12,749
    5,243
    57
    Location:
    Minnesota
    Vehicle:
    2017 Prius Prime
    Model:
    Prime Advanced
    That was quite intentional, a design choice.

    You can clearly see actual energy flow with an aftermarket app. The use of KISS has been a practiced approach for decades now.
     
    #61 john1701a, Jul 22, 2021
  2. ForestBeekeeper

    ForestBeekeeper Active Member

    Joined:
    Sep 19, 2011
    695
    269
    0
    Location:
    Maine
    Vehicle:
    2017 Prius Prime
    Model:
    Prime Premium
    It is NOT a perpetual motion machine. to get 10 miles of battery charge requires driving about 40 miles. You don't get anything for free.
     
    #62 ForestBeekeeper, Jul 22, 2021
  3. john1701a

    john1701a Prius Guru

    Joined:
    Jan 6, 2004
    12,749
    5,243
    57
    Location:
    Minnesota
    Vehicle:
    2017 Prius Prime
    Model:
    Prime Advanced
    That is an exaggeration. Here is an actual recharge using Charge-Mode.

     
    #63 john1701a, Jul 22, 2021
  4. ForestBeekeeper

    ForestBeekeeper Active Member

    Joined:
    Sep 19, 2011
    695
    269
    0
    Location:
    Maine
    Vehicle:
    2017 Prius Prime
    Model:
    Prime Premium
    I do not have a display like that.

    In our experience, with normal interstate driving with cruise control set at 82mph, it usually takes around 40 miles to get 10 miles of charge.
     
    #64 ForestBeekeeper, Jul 22, 2021
  5. Trollbait

    Trollbait It's a D&D thing

    Joined:
    Feb 7, 2006
    21,742
    11,327
    0
    Location:
    eastern Pennsylvania
    Vehicle:
    Other Non-Hybrid
    At higher speeds, there is going to be less engine output available for charging the battery. Those speeds probably mean you are already past the engine's plateau of good efficiency, so the penalty for charging is relatively less.
     
    #65 Trollbait, Jul 22, 2021
    jerrymildred likes this.
  6. dtsexpert

    dtsexpert Member

    Joined:
    Sep 13, 2019
    167
    80
    0
    Location:
    San Francisco
    Vehicle:
    2021 Prius Prime
    Model:
    XLE
    May I ask the benefit of charging mode?
    Few I can think of:
    1. Start AC before depart
    2. For later local drive in EV
    3. So addict to EV drive
    Are there any other reason????
    Efficiency wise, it costs more to burn gas to charge the battery then plug in the wall.
     
    #66 dtsexpert, Jul 22, 2021
    jerrymildred likes this.
  7. Tideland Prius

    Tideland Prius Moderator of the North
    Staff Member

    Joined:
    Oct 2, 2004
    44,837
    16,072
    41
    Location:
    Canada
    Vehicle:
    Other Non-Hybrid
    Model:
    N/A
    The Gen 4/Prime’s engine is 40% thermally efficient.

    But yes you will use more fuel to generate electricity to charge the battery. It charges at the DCFC rate that the Japanese Prime/PHV has (CHADeMO)

    Burn through the gas that’s going stale after it’s been sitting there for 1 year and you need at least half a tank of fresh gas for the computers to be happy.
     
    #67 Tideland Prius, Jul 22, 2021
    dtsexpert likes this.
(You must log in or sign up to post here.)
Page 4 of 4