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Originally Posted by 0gopogo
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Many thanks for that hint. I have no idea how I managed to ignore the cache size option. After all the default value is just 256kB... (blush). Your advice to increase the cache size to the 16MB max. will certainly lead to a much better battery life time. In that other thread you wrote you interpolated 5:25 hours until "battery runout". Does "runout" refer to the 20% battery level at which the low power warning pops up?
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It is just a calculation to when there will be 0% Power. As OMFG states you might want external power if u wish to use it that long. I just ordered one of those 4-AA external power packs from ebay for an 11 hr flight I am going on next month, & I also have a spare regular battery too. But for general use, I can't see myself listening to MP3's or watching movies for more than 2hrs without an opportunity to recharge, so it really is up to your own needs. Also, the Hitachi drive has less power draw than the Microstar drive, so that makes a big difference.