NFS4,
Those two reviews are not of the e570, they are both of the Genio e550, in reading through the Brighthand forums I came across this post.
<< Tests performed on Toshiba E570
Loop test playing a list of 20 music titles and 3 video clips.
The screen was switched off throughout this test except for when checking the battery status.
Uptime application used to record battery run time figures.
A twinmos (cheap OEM) 128mb CF card was used in all tests.
All the tests included most playing coming through the onboard speaker and some headphone usage.
The percentages where not recorded at the exact time they changed so these can not be taken as being very accurate.
This is because uptime does not provide graphing capability and were only spotted when I turned on the screen.
If graphing was available I could provide more accurate percentage change time figures.
There is supposed to be an application that does this (seen posted on an IPaq forum and on Dale Coffings site).?? Anyone know where I can find this, I can then post graphs showing the battery profile.
Anyway, onto the test results....
Test 1 - Basic test
To emulating what would be considered normal media playing behaviour I played the media for periods of time and then stopped for severals minutes and hours at a time.
The battery at this stage had only recieved 2nd full charges since it's initial purchase
3hrs 8 mins at 40% (warning)
4hrs 2 mins at 30%
4hrs 41mins No power to CF warning
At this stage I can still play music direct from the PDA, and copy files from the CF card
The unit has set it's back light to power save and can not be set higher.
I can play several screens of the Cubicle Chaos game (found on the MS CE Download website)
The games lasts for a further 4 minutes
Test 2 - Constant
A constant loop playing the same media list (20 music, 3 video)
To emulating what would be considered normal media playing behaviour I played the media for periods of time and then stopped for severals minutes and hours at a time.
The battery at this stage had recieved it's 3rd full charges since it's initial purchase
1hr 17mins at 90%
1hr 42mins at 80%
2hrs 04mins at 70%
2hrs 44mins at 60%
3hrs 21mins at 50%
3hrs 45mins at 40% (warning)
4hrs 17mins at 30%
4hrs 51mins at 20%
5hrs 19mins at 0%
Even thoough the power shows 0% and there is insufficient power to play music from the CF card I can still play music direct from the PDA, and copy files from the CF card.
The unit has set it's back light to power save and can not be set higher.
I can play several screens of the Cubicle Chaos game (found on the MS CE Download website)
The games lasts for a further 5.5 minutes.
Additional Notes:
I did not notice the volume drop when the power dropped at all (as posted by someone else on BHand).
I suspect that the recharging of the battery was the main reason for the increase in time on test 2. I started a repeat of test 2 and monitored the battery percentages and these seemed to be higher again (ie. it took nearly 4 hours before the battery warning at 40% started.
Conclusion
I am generally very happy with the battery performance of the PDA and will re-run these tests next weekend (whilst eating my Christmas cake ) to see if the additional recharge cycles have improved the performance any further. I will post results here when I complete them.
If you have any questions please let me know.
Hope the above is of some use.
>>
While the battery life is not stellar, that post is from someone who actually has a US production unit, the e570, and the battery life based on his tests are adequate at the minimum, IMO.
--Ben