Rockbox General > Rockbox General Discussion

why 88% battery shows only 2 hours on IPOD VIDEO

<< < (2/4) > >>

robin0800:
Not sure where your 900mAh figure comes from?
 If you look at this table
http://ipodbatteryfaq.com/ipodbatteryandpower.html
I can't see 900mAh at all I think your better just setting the capacity from this table.

Buschel:
He just hacks the capacity to have a realistic runtime estimation. The actual trunk is kind of "broken" or better "not finished" regarding the iPODs batteries.

robin0800:
I know But what has that to do with 900mAh as this figure is clearly? not correct.

Rincewind:
you can also use this patch to get a nice runtime estimate:

http://www.rockbox.org/tracker/task/7092

You can adjust the maximum runtime in a settings menu entry. The advantage is, that you don't have to change the battery capacity value, which might be used in other power related functions.

This patch is more flexible than #7216

Buschel:
The actual battery configuration for iPOD Videos uses (at leat for 30GB-units) correct capacity of 400mAh. The current consumption for all iPODs is assumed to be default = 145mA. So, maximum runtime is 400/145 = 2:45h. To get a proper runtime estimation you can either correct the current consumption (my way in patch #7216) or use an incorrect but much higher battery capacity (e.g. 900mAh -> 900/145 = 6:12h runtime estimated).

The trunk was never adapted to iPOD Video's and/or nano's and with the "correction" of the battery capacity for iPOD Video's nothing works as it was...
Please check out the patch as it uses correct capacities for nano and both Video's (via usage of MEM), defines much better current consumptions and introduces new battery types (as the former used LIPOL wasn't suiting at all).

Navigation

[0] Message Index

[#] Next page

[*] Previous page