Monday, 27 April 2009

A long trip to Homebush and back.


On Sunday I attended an event at Energy Australia

The trip there was  31.8km and the economy was 226Wh/km. 
The recharge time was 4 hours. (I have never had a chance to 'watch' the chargers before.)

The return trip was 39.4km (Thanks to Kearon getting lost and me making the mistake of following him) I averaged 210Wh/km. 

The extra kms were on flat ground around Olympic park. This really shows how much hills kill the batteries. I usually get abut 250Wh/km around the hilly area where I live.

My Hilux



Mark's Lotus 7 replica


Kearon's Capri

Peter's Combo

Nathan's Hyundai Excel



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1 comment:

  1. Woody28 April 2009 at 14:10

    Hi Mal,

    I think internal battery resistance would play some part of the higher than expected Watt Hours / km.

    e.g. charging at 2.4kW = 4 Amps.
    4 amps through 50 batteries @ 11mOhm = I^2R = 16 * .55 = 8.8W (bugger all)

    Draining at 36kW = 60 Amps.
    I^2R = 3600*.55 = 2 kW. (not insignificant).

    Can you measure the input/output of one charger to see how efficient they are approx?

    cheers,
    Woody

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