connect lipo battery to euler bus
#9
(09-08-2016, 04:46 AM)pfeerick Wrote:
(09-07-2016, 09:08 AM)UnixOutlaw Wrote: So I'm getting less than 4.5 hours from 2500 mAh battery...  As a comparison - I can get about 12 hours on an NTC CHIP running with a 2000 mAh battery...

If that battery was fully charged, and was genuinely capable of 2500mah, I'd be thinking it was nearer to 6 hours. Is this with a wifi module? I'll have to check what the power consumption of the board is again... I seem to think it was in the 300mah range when idle... but it's been a while since I've seen the readings when not trying to flog the poor thing! Wink

Hey MarkHaysHarris777, is that with the official battery? Is it holding it's capacity so far?

hi all, the lithium polymer batteries at 8000 mah /

... I have two of them;  one is blue and labeled with the silver Pine64 logo. The other is an unmarked silvered lipo of the same size (performance tests indicate that it is also 8000 mah.

Presuming an average current somewhere between 400 - 600 ma,  the maths say  about  13 - 20 hours (strictly speaking lots affects this, and the battery actually is a little larger, and the currents are actually a little less).

My lipo(s) hold both of my primary pine boards for 19.5 hours at idle before critical threshold shutdown. With everything connected ( gps, fan, LED lab, usb receiver, hdmi, and wifi board, my lipo(s) hold the unit up for an effective period of between  9 - 13 hours depending on what I do with it; in other words using it productively as a desktop PC all day; actively productive (realizing that all of this is entirely subjective).

In outlaw's case, he ought to be getting very close to 6 hours from a 2500 lipo.  I suspect his battery is really closer to 3000 mah, and that his currents are far less than a fully loaded fully active system (but I don't know).  If its not a three wire system I suspect it is not being fully charged;  but of course, I don't know that either.

In any case a 'real' 2500 mah lipo battery is tiny.  The 8000 mah batts are 4.5 x 2.5 x .25 inches ( 11.5 x 6.5 x .7 cm )  The tiny batteries are susceptible to over charging and explosion because the PMIC has a stronger charge rate than most cell phones, &c.  This is particularly true if the saftey protocols are being bypassed without the thermister monitor for the PMIC.

(much of this is subjective speculation, YMMV)
marcushh777    Cool

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Messages In This Thread
RE: connect lipo battery to euler bus - by MarkHaysHarris777 - 09-08-2016, 07:22 AM
RE: connect lipo battery to euler bus - by peteh - 09-10-2016, 02:51 PM

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