maemo.org - Talk - Make Your Battery Last Longer

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- - Make Your Battery Last Longer (https://talk.maemo.org/showthread.php?t=51503)

Re: Make Your Battery Last Longer

Quote:

Originally Posted by nokiaman (Post 635248)

1ST

- Let you battery run DEAD on it's own.
- Charge it up till the phone says it's fully charged.
- Now here's were you need patience. after it's fully charged, plug it up AGAIN. IF it still says fully charged than your good to go. On mine it said fully charged but when I pluged again it continued to charge for almost 2 hours!

Bad idea, I think. See my previous reply. Also, Li-Ion batteries charge extremely slowly when they are nearly full (something like 98% slower than when empty), so your extra 2 hours of charging might be accomplishing almost nothing anyway.

Quote:

Originally Posted by nokiaman (Post 635248)

2ND

Go to settings,
internet connection,
click on CONNECTIONS TAB,
now edit your WIFI connection,
click next,
click next again,
next again,
now click on ADVANCE TAB,
now click OTHER,
on wi-fi transmission choose 10 mW.
on POWER SAVING choose MAXIMUM.
no click on SAVE.

The Maximum power saving is safe to use, but it will negatively affect your wifi speeds and connection stability. (and before PR1.1 it was absolutely unusable on this setting)

The good news is that you can set this on a per-connection basis.

For example, on my work WiFi AP i have power saving set to "Maximum" because speed is not important there. At home, I set it to "intermediate" because I download updates and do streaming and other things that are really terrible when the phone is on maximum power saving more.

I would not recommend setting power saving to "Off". It seems to have no better performance than "intermediate" and uses a LOT more battery.

10mW is not beneficial IMO. Leave it on 100mW and enjoy a better WiFi experience. :)

Re: Make Your Battery Last Longer

Quote:

Originally Posted by travik (Post 635600)

Hmm, then I don't get it. Why all the scary warnings that leaving it charging overnight will kill the battery? I was really worried for a second. So I can just plug it in at night, forget about it, wake up in the morning, unplug, no harm done to battery, no electricity wasted?

what warnings?

nobody said its dangerous to charge over night.
the dangerous part is when you unplug and then re-plug the charger after the phone told you its fully charged.

when the phone realizes that its charged the charger stops charging (omg, what a sentence).

Re: Make Your Battery Last Longer

Quote:

Originally Posted by travik (Post 635600)

Yeah, if you use the official Nokia High-Efficiency charger that came with your N900, it uses less than 0.03W during idle load (fully charged battery). Unplugging will prevent this 0.03W but there is no harm to your battery.

I charge my N95 and N900 overnight every night, and have forever, and never had any problem. :)

Also check here, the N900's charger has 5-star efficiency rating according to Nokia:
http://www.nokia.com/environment/we-...-energy-rating

Re: Make Your Battery Last Longer

thanks for clearing that up, I guess I didn't get what was meant by 'overcharging.' Plus the Nokia manual is a little scary on that point. Ill just keep on keepin it plugged in at night.

Re: Make Your Battery Last Longer

Quote:

Originally Posted by ndi (Post 635511)

N900 never uses charger power, like other phones, because charger power is too unstable. It always runs off the battery.

In accordance with electronic charts the battery charger chip feeds battery through the same wire which is used to get power from battery. So, the green lamp is not a prove that battery charger chip doesn't feed 3.7V. At least the charger DEFINITELY feeds a system voltage while it charges a battery.

Tomorrow morning I will look into BQ27x00 gauge indicators then charger is attached but green lamp is lit.

Re: Make Your Battery Last Longer

Quote:

Originally Posted by travik (Post 635615)

thanks for clearing that up, I guess I didn't get what was meant by 'overcharging.' Plus the Nokia manual is a little scary on that point. Ill just keep on keepin it plugged in at night.

i guess companies have to be so sensitive with these kind of things just to be on the safe side of the law.

"overcharging" is a myth to me anyway. all the electronic devices i have i let charge overnight and i never had any problems whatsoever.

Re: Make Your Battery Last Longer

Ok the 1st tip worked like a charm for me. I dont knw wot the rest of u guys experiemced with the 10mw option. But i left my phone connected to my wifi connection overnight with a flash website idling. Normally my phone batt would conk off by morning. But it hasjust dropped 2 bars. Aweeeeeesomeeeee... :D

Re: Make Your Battery Last Longer

Quote:

Originally Posted by msa (Post 635663)

Overcharging is very real and will destroy battery quickly and spectacularly. Luckly, there are protections in place in most mid to high end gadgets.

All lithium batteries have additional, inbuilt protection.

Lithium is destroyed by as little as 3% overcharge.

Re: Make Your Battery Last Longer

Quote:

Originally Posted by egoshin (Post 635624)

OK, this morning, after all night on charger (green lamp on) and doing multiple measurements I see the current through charger chip in BOTH directions - battery discharge and battery charge.

But battery charge current is 10 times less than during charge start (yellow lamp slow blinking). And battery discharge current is also smaller (2 or 4 times) then usual, w/out connected charger.

So, the bottom line - charger feeds N900 with small current while battery is full. Sometime it powers N900 and charges battery-a-light but if I use a phone (unlock and run apps) then it's current is not enough and N900 is powered by both - battery and charger.

Re: Make Your Battery Last Longer

After awhile with green light and higher current drain it increases the current to top-off the battery.

I've seen it float between 90 and 100% whilst on charger.