124 replies to this topic

[fusion_power]

According to our calculations it should work for up to 100 hours(!) playing mp3s.

O_o is that a typo?

...would be incredible if not. Cool, 100 hours .mp3 ...now traveling is Fun! Hm Could be possible with screen off and underclocking and whatever. The Chipset is designed for Standard MHz of maybe 600 and many Hardware 3D Features. Power, that no Music-Player needs. If the Power-save-skills of the OMAP are really that good like TI write in their Tech-papers, the Pandora will give us many surprises I think

[Tobriand]

We have decided to stick to 27mm and a custom battery size to use every last mm of space, the battery will be ~4000mah.

According to our calculations it should work for up to 100 hours(!) playing mp3s. We won't know about using powerful apps until we do some further tests, but we are aiming for that magic 10 hours. It should easily get 10+ hours running recompiled GP2X apps.

Nice choice - 10 hours should be more than enough, and 100 for MP3s bodes *very* well for low-power PDA functions. Would I be right in assuming that that would be with WiFi turned off, though? I seem to recall that that was at one stage quoted to be *the* big power hog (I recall 0.5A being quoted at one stage, though this was before the OMAP switch, so you may well have gotten a much more efficient ultra-cutting-edge low power WiFi ship since then).

[nubie]

No Way!

Considering the OMAP will be in tons of smartphones, and probably the new razr, I would bet it has to have a power saving mode/modes.

I can see a long time for MP3 Playback, even 100 hours is just awesome. (that is like 4 1/2 days standby time on a cellphone, and we will have a bigger battery I think, even if MP3 Playback takes more power than a cellphone.)

I am going to guess it is highly dependent on the speakers/headphones and volume, with a set of "earplug" phones like the The Plug from Koss I would really believe it could do it.

[OrR]

I hope power saving modes are tested thoroughly before mass production begins. I don't want the Pandora to eat as much juice as my (awesome) Neo1973...

What voltage does that battery provide? Being custom made, how easy will it be to rip it out and put in your own thing?

[Series-8]

Its a single pack Li-ION Polymer cell? 3.6V or 7.2V?

4000mAh = ? mW

4Ah * 3.6V = 14,400 mW [Thats 14 Watts.]

4Ah * 7.2V = 28,800 mW [Thats 28 Watts, Scotty hold the dilithium crystals... we're good here. ]

Also charging from USB (standard power)

USB Spec 5V @ 500mA = ~2.5W.

5.76 Hours to charge. Assuming 100% efficient power conversion.

Real world means about 8 Hours.

In short, this will need a beefy charger.

[atomicthumbs]

According to our calculations it should work for up to 100 hours(!) playing mp3s

holy fuck.

[LevelPlane]

That's longer than a Cowon D2! Twice as long!

[quote]

According to our calculations it should work for up to 100 hours(!) playing mp3s. We won't know about using powerful apps until we do some further tests, but we are aiming for that magic 10 hours. It should easily get 10+ hours running recompiled GP2X apps.

Great! 100 hours mp3's and you've kept it at 27mm Fucking WOW !

I would have thought a custom - built battery would add a lot to the price

Edited by pandora, 21 March 2008 - 07:16 PM.

[javaJake]

You know.

I'm shocked.

Speechless.

This.

Is unbelievable.

Totally.

Utterly.

Ominously.

'Scuse me while I go get a sweatshirt so I can stop myself from shivering...

[squeakypants]

No Way!

Considering the OMAP will be in tons of smartphones, and probably the new razr, I would bet it has to have a power saving mode/modes.

I can see a long time for MP3 Playback, even 100 hours is just awesome. (that is like 4 1/2 days standby time on a cellphone, and we will have a bigger battery I think, even if MP3 Playback takes more power than a cellphone.)

I am going to guess it is highly dependent on the speakers/headphones and volume, with a set of "earplug" phones like the The Plug from Koss I would really believe it could do it.

I read them (either craigix or MWeston) say at one point that the OMAP's clock speed was just a maximum, and it would always downclock as much as possible without losing efficiency.

100 hrs for MP3 playback is pretty kickass. Is that with the screen on? Also, how long could we watch video (let's say DivX or Xvid)?

[A_SN]

I read them (either craigix or MWeston) say at one point that the OMAP's clock speed was just a maximum, and it would always downclock as much as possible without losing efficiency.

100 hrs for MP3 playback is pretty kickass. Is that with the screen on? Also, how long could we watch video (let's say DivX or Xvid)?

Oh yeah? I thought it wouldn't downclock but just that it was so power efficient that there would be little leakage during idle cycles.

[chris_merris]

I do not care how heavy the Pandora is, especially if the battery can last 16 hours! Also, hopefully it doesn't increase the size of the unit too much. If I can fit it in my pocket - it's not too big (not saying I would actually carry it in my pocket - just if it would fit.)

[Miki_Loz]

I just wouldn't care for the weight if pandora's battery could last for 16 hours!!! xD

[OrR]

Please don't get too exited over the 100/16 hour battery life speculation, even if it came from Craig himself. Usually these things don't work out quite as well as in theory. It's better to expect less now and be positively surprised later than the other way around!

Edited by OrR, 22 March 2008 - 10:44 AM.

[Karel Jansens]

Pretty soon it'll be quite easy to spot Pandora owners: They all sport an insanely wide grin on their face and they're walking lopsided.