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powerbook battery replacement/upgrade?

Discussion in 'PowerPC Macs' started by qtip919, Nov 15, 2005.

  1. macrumors 6502


    I noticed that the new powerbooks have batteries with longer batttery life. Is it possible to use these new batteries in older Al powerbooks?

    I have a 1.5ghz AL powerbook purchase last summer and was hoping for more battery life :)
  2. Guest


    The batteries are the same. The extra battery life comes from the laptop itslef being more energy efficient. Specifically the processor can now step down to 1/4 of max speed as well as 1/2 (which is what it did before). This lower clockspeed and concomitant lower voltage allows the battery to last longer.

    Also the RAM is marginally more energy efficient.

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