Rockbox General > Rockbox General Discussion

Clip+ FM Battery Life

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vocrobot:
I've had my clip+ for a fortnight and haven't used the FM radio much but during this week I've noticed that battery life on my player is taking a hit when I listen to FM. I started listening to a programme battery was at 100%, when the programme finished 45 minutes later the battery was down to 91%.

I read that when 3.11 was released there were problems with battery drain using FM hence the reason 3.11.2 was released. I am experiencing what seems to be bigger than normal power drain using FM. Usually listening to FM doesn't drain the battery as much as listening to music but this might be the case using Rockbox. Just as a test I have tried a couple of the recent daily builds and the same thing happened. Has anyone else noticed this or am I just imagining it.

AlexP:
The problem with 3.11 is that the radio wasn't being turned off properly on boot so it was always using power without being used, thus shortening battery life.  It wasn't that the radio itself was taking more power when being used.

If it is doing that, then that would be a different issue.

vocrobot:
OK. It does seem that radio listening is using more battery than music files. Can you use battery bench while just listening to the radio?

AlexP:
Sure, just start battery bench then enter the radio.

vocrobot:
Am running battery bench with the radio playing and after only 40 mins the battery is down to 92%. Could this have anything to do with the signal strength facility (I think that's what causes the clicking noise when the radio screen is on). I'm no expert at all, I'm just trying to work out what could be causing this as I haven't seen any other posts about it.

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