maemo.org - Talk - View Single Post - [Announce] bnf - nifty little tool, allowing to have battery info at glance

	Estel	2014-03-21 , 17:16
	Posts: 5,028 \| Thanked: 8,613 times \| Joined on Mar 2011	#72

Originally Posted by handaxe

That is not the best for the battery - lipo's like neither being drained nor filled-to-the-brim. IIR, from down to15% and up to 85% capacity would do best, or thereabouts. The relatively short-legs of smartphones make that practically very difficult to do.

IIRC, heavy industry (trains) use 20%-80% thresholds, but it's indeed about same thing. People still have NiCD/NiMH habits of "refreshing" by full charge.discharge, which are totally inappropriate to LiIon family.

Originally Posted by Ast007

A follow up question. My battery widget is at 0% but bnf is 63%. Voltage is above 3425 and VDQ remains at one. I think maybe something is wrong with bme? that it is causing this issue? Could bnf have modified it?

It means - sadly for you - that your battery is closer to 800 mAh, than the 1700 mAh suggested in last post

While being (non)calibrated for 1699 mAh, your chip "thinks" it's at 63% left 'till 3000 mV (0 mAh - it calibrates at 3248 mV, which should mean 6% left), but in reality, it is 3425 mV, so *very* close to end of discharge. If you calibrate this time, you will notice lower indicated value (something like 1300 mAh, probably), but you need few more calibration cycles, until you get the real value. As said, I suspect something like 800 mAh, which means very poor battery performance.

Cheers,
/Estel

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