MobileRead Forums - View Single Post - Poll: Real-life battery lifetime experience

reading_nut · 11-03-2006, 09:09 PM

I think it will be difficult to measure hours of usage. For me, the time is cumulative, and very difficult to track. For another thing, reading speed varies widely and since most power is consumed during page changes, battery "time" will vary accordingly.

However, I've read ~800 pages and just dropped to 3/4 bars. I've never used a memory stick or played music. I have moved through a lot of menus and sample pages for co-workers, figure maybe another 100 turns or so.

So, if I assume ~900 pages at 3/4 of a charge that only gets to 3600 pages, about half of Sony's claim of 7-7.5k page turns.

*However*, as it has been pointed out, a Li-ion battery doesn't hit full charge after the first cycle. In fact, I'm not sure it was plugged in long enough to get to a completely full charge before I started playing (couldn't resist). So don't jump to conclusions yet.

So, I'm going to make an effort not to sync or charge until I've run it down to a single bar, and should be able to give another estimate then...

11-03-2006, 09:09 PM	#71
reading_nut Junior Member Posts: 8 Karma: 10 Join Date: Nov 2006 Location: Florida Device: Sony eReader	Tough to measure hours... I think it will be difficult to measure hours of usage. For me, the time is cumulative, and very difficult to track. For another thing, reading speed varies widely and since most power is consumed during page changes, battery "time" will vary accordingly. However, I've read ~800 pages and just dropped to 3/4 bars. I've never used a memory stick or played music. I have moved through a lot of menus and sample pages for co-workers, figure maybe another 100 turns or so. So, if I assume ~900 pages at 3/4 of a charge that only gets to 3600 pages, about half of Sony's claim of 7-7.5k page turns. However, as it has been pointed out, a Li-ion battery doesn't hit full charge after the first cycle. In fact, I'm not sure it was plugged in long enough to get to a completely full charge before I started playing (couldn't resist). So don't jump to conclusions yet. So, I'm going to make an effort not to sync or charge until I've run it down to a single bar, and should be able to give another estimate then...