Support and General Use > Hardware
sansa battery life
EdisLeado:
sorry for another thread, but...
well, i dunno what's going on with the mp3 player -- but i've recently charged the battery and after using it for a little bit the numerical battery display went down to about 84 -- and with the theme i'm using, it says that it only has like 4 hours left on the battery if it's at 84. what the? isn't the e200 series advertised with 20 hours of battery life?
i even charged it to 100% one time and after using the thing for like an hour or two, a window popped up in rockbox saying that the battery was low and then it just shut off?
what is going on?
Vortex:
The battery level display and estimated running time are awfully inaccurate on Rockbox. Actually the running time estimate is not even inaccurate but plainly wrong.
However, since this is not a serious issue it might not get fixed soon.
--- Quote ---isn't the e200 series advertised with 20 hours of battery life?
--- End quote ---
Yes, but using Rockbox currently shortens your battery life a little. I got about 16 hours of continuous playback on my Sansa (without turning the backlight on).
--- Quote ---i even charged it to 100% one time and after using the thing for like an hour or two, a window popped up in rockbox saying that the battery was low and then it just shut off?
--- End quote ---
I never had that happen on my Sansa yet. Even when the battery was low, it just shut off without saying anything. That's (as far as I know) because the shutdown is not triggered by Rockbox but by the hardware/bootloader.
If your battery had really run dry after just an hour or two I guess you might have to replace it.
EdisLeado:
well, so far the "battery is low RECHARGE" message only came up once in rockbox for like a split second before shutting down. i forgot to mention i only bought this mp3 player like 2 days ago.
the rockbox manual says that i can change the battery capacity in the settings, but when i get there, it wont even let me -- no matter what button i click, it just takes me back to the previous menu.
Vortex:
Changing the battery capacity setting does not affect the actual running time in any way. It's only used for calculating the battery level and estimated running time left.
Like I said, Rockbox does not power your player down when it thinks the battery is low, so it doesn't really matter what battery level it displays.
If your battery really died after just 2 hours it might be defective. You should check that by using the Original Firmware for a while.
EdisLeado:
--- Quote from: Vortex on June 24, 2007, 03:08:24 PM ---Changing the battery capacity setting does not affect the actual running time in any way. It's only used for calculating the battery level and estimated running time left.
Like I said, Rockbox does not power your player down when it thinks the battery is low, so it doesn't really matter what battery level it displays.
If your battery really died after just 2 hours it might be defective. You should check that by using the Original Firmware for a while.
--- End quote ---
Considering my system clock doesn't work either, it might actually be the battery. Otherwise, the MP3 player seems fine. Is it maybe because I'm keeping the MP3 player plugged in alot of the time and it's deteriorating the battery?
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