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Author Topic: OS 9 vs OS X Battery Life  (Read 3204 times)

iMacG4Guy

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OS 9 vs OS X Battery Life
« on: March 04, 2021, 08:55:21 PM »
I'm lucky to have a 1Ghz G4 Titanium, set up to dual boot 9.2.2 and 10.5.8. I recently acquired a couple of old batteries from eBay. Total gamble with neither being tested. One is completely dead, but the other charged up and gave me about 30 mins of cordless bliss. Under Leopard System Profiler I'm able to see that the battery has 180 cycles and supposedly has 4250mah out of 4200 lifetime capacity. I did the whole calibration thing multiple times and it still says the battery has 4250mah, but is still dies after about 45 minutes.

Then I decided to boot into OS 9 and see what's up. I've now been on battery power for about 90 minutes and I still have 5 out of 8 bars on the battery meter with an estimated 2h15m left. Wut?! I know Leopard is far more power hungry than OS 9, but I didn't expect to see that big of a difference. Also, it seems like maybe Leopard isn't addressing the full capacity of the battery? As if it's shutting down prematurely. Is that possible?
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