New Nokia BL-5J only charge to 85%
 

Hello.
Just bought a new Original Nokia BL-5J 1430mAh battery.
And to my supprise when I charge it the phone states that it fully charged at only 87%.

Here is the output from hal.
Should I return the battery too Nokia or will a few recharge cycles fix it?

Re: New Nokia BL-5J only charge to 85%
 

Where do you find these new 1430mAh batteries?

I think you'll need to recalibrate the battery chip.

Re: New Nokia BL-5J only charge to 85%
 

Will try recalibrate.
Edit: btw is the instruction still correct nowdays with KP50?

About the new BL-5J.
http://europe.nokia.com/find-product...-battery-bl-5j

Re: New Nokia BL-5J only charge to 85%
 

Re-calibrating the chip is pointless unless you are relying on the BQ27x00 module for battery related things.

Protip: You are relying on BME for battery related stuff which completely ignores the chip calibration etc. (if you ever wondered why they refused to open BME it is due to a huge sense of shame the programmer feels for such a kludge of a program).

Re: New Nokia BL-5J only charge to 85%
 

But I guess I need to use BQ27x00 instead of BME to get access to the last 200mAh.

Re: New Nokia BL-5J only charge to 85%
 

Whilst fully accepting that BME is known shite, do you know when your battery was manufactured? I suspect that Nokia don't need to produce these very often, and may be selling stock that's easily a year old. If so, then a capacity loss of anywhere from 4-20% is entirely to be expected (see http://en.wikibooks.org/wiki/Battery...ure_and_charge) and your BME may not be as wrong as you think.

Popular wisdom is that the Scud batteries from Lucia Lui are about the best available, they're quoted as 1445mAh and this is realistic, they've been measured at 1400-1500mAh by multiple users. Mine measured in at ~1430mAh when I got it (according to bq27200) and reports at ~1350mAh now, on the same device, after nine months of use.

Hopefully your BL-5J comes good after a few charge cycles, but if not - try a Scud.

Re: New Nokia BL-5J only charge to 85%
 

The same problem here, and deffinitely my 1430 mAh battery is genuine, I took it from asha 200 I bought to my GF.

Re: New Nokia BL-5J only charge to 85%
 

I find no info about manufacturedate in the box.
Edit: no instead of now

Re: New Nokia BL-5J only charge to 85%
 

What to you say, try recalibrate?
http://talk.maemo.org/showpost.php?p...&postcount=846

Re: New Nokia BL-5J only charge to 85%
 

NFC :D . I asked your question on #maemo a week or so ago and joerg_rw advised to ignore what hal reports and even if it says it is 85% charged, the truth(according to him) is that it is 100% charged. I know it is irritating to have 7 bars left 20 minutes after you disconnect the charger, but it seems that is how BME works.

Maybe we should push harder and finally get rid of that piece of crap (BME I mean)

https://gitorious.org/hald-addon-bme/hald-addon-bme
https://gitorious.org/libbmeipc/libbmeipc

:D :D :D

Re: New Nokia BL-5J only charge to 85%
 

True. I'll leave it be for now.

Re: New Nokia BL-5J only charge to 85%
 

But do you know that the Scuds have recently become unavailable? I'm for ignoring the 85% reading unless it is proven accurate.

Re: New Nokia BL-5J only charge to 85%
 

I didn't know that... apologies for the out of date recommendation. I'll await the verdict on these new Nokia batteries...

Re: New Nokia BL-5J only charge to 85%
 

I will report back in a week or two

Re: New Nokia BL-5J only charge to 85%
 

Ok, my experience sofar.
Lets put it this way, I experience no better battery life after using the new battery for a few weeks.

I have been looking at bq27x00.
But I dont realy get it.
How do I switch to using bq27x00 instead of BME.
And anything I should keep in mind when using bq27x00 instead of BME?

When I have bq27x00 in place I will lookin to do a calibration.

Re: New Nokia BL-5J only charge to 85%
 

You will have to wait until a full BME replacement is done. Things are moving, but don't hold your breath, it will take some time ;)

Re: New Nokia BL-5J only charge to 85%
 

Ok, thx.
I settle my eager ;)

Re: New Nokia BL-5J only charge to 85%
 

This is about 95% battery capacity (REAL Capacity), so your battery is almost fully charged.

EDIT: Your not going to reach 100% unless you have some charging system that will take you battery to 4230 mv, but don't sweat it, you will not feel it anyway, at most you will get 10-minutes more in standby.

I have a "graph" based on my discharge test, here you can see what % your battery is at.

http://talk.maemo.org/showpost.php?p=912210&postcount=2

Re: New Nokia BL-5J only charge to 85%
 

@dr_frost_dk - I am the last to question your expertise :) , but are you sure those 50 mV to 4200 are not that 100 mAh we are talking about?

EDIT:
And there is some really irritating effect: about 20-30 minutes after charger is disconnected, battery meter (stock) drops to 7 bars.

Re: New Nokia BL-5J only charge to 85%
 

Well it is actually 80mv (4.23V) and yes that actually coresponds to about 100mA, but unless you have your N900 in standby with almoust nothing running (WiFi, BT etc) then you rarely get the last drops from the battery anyway, that's why i say you won't feel/get the last runtime.

Again only way is to charge your battery's to 4.23V manually or hack the charging system to allow 4.23V, but a word of caution here go over 4.25V (only 20mv here so very easy to do) then your battery will be damaged, do this few times and you might aswell go and buy a new battery.

EDIT: battery meter is not accurate unless you do all those steps to calibrate (i haven't tried it), and that's why i made my battery meter that is in my battery thread, i got tired of looking at those wrong % readings and such

Re: New Nokia BL-5J only charge to 85%
 

I have the same problem. I think mine is 86% when the charging led turns green. It's a Nokia genuine battery.
Freemangordon, did you check on the Asha phone whether it is charging to 100% ??

Re: New Nokia BL-5J only charge to 85%
 

Don't go by the %, what voltage is it reporting when charged?

if it is reporting over 4100mv (4.10V) then your over 90% not 80-85%

Re: New Nokia BL-5J only charge to 85%
 

you can buy this battery on nokia centers, specialy made for new phones like x1-01,i think the pure 808 use the 1430mAh, i am using same battery now,i took it to my x1-01,my battery is ok and longer last working thanks nokia

Re: New Nokia BL-5J only charge to 85%
 

i also took a battery from X1-01. it only charges till 85.5 % never goes more than this. will check its voltage as Dr Frost suggested.

my phones own battery 1320 mAh one charges till 96% its quite old now and also doesn't hold charge for too long.

Re: New Nokia BL-5J only charge to 85%
 

maybe there is something wrong for that,and i will check it today

Re: New Nokia BL-5J only charge to 85%
 

According to the changelog for KP51,
"Added bq2415x charger driver (blacklisted by default)"
http://talk.maemo.org/showpost.php?p...&postcount=445

Is that related to the problem with new BL-5J batteries?
Anything I should test?

Re: New Nokia BL-5J only charge to 85%
 

@toxaris,

It's not directly related, but with KP51 and bq2415x enabled you can effectively get rid of BME and the kernel will take care of charging the battery nicely.

I've done that. I have even uninstalled BME, and charging works. Obviously the battery meter doesn't work (it shows always half-full, that's how it was when I removed bme). But I just monitor the voltage and extrapolate in my head (basically, take the voltage in mv, subtract 3000 and you get a rough estimate of the mAh). Good enough for me I'd say.

Re: New Nokia BL-5J only charge to 85%
 

Any chance to get you onboard for those:

https://gitorious.org/hald-addon-bme
https://gitorious.org/libbmeipc

Re: New Nokia BL-5J only charge to 85%
 

I see three problems with that:

(1) I'm too old fashioned. Never used git or any revision/version control systems. Just plain Makefile. But I can learn.

(2) I actually would prefer to turn Maemo into something more Linux-standard-ish. Meaning no BME. Hopefully also no HAL and even no DBUS (somehow I despise anything supported by freedesktop.org -- don't know why -- it seems there's a coordinated effort to over-complicate things).

(3) Lack of time.

I'll nevertheless have a look at the code and see if I can figure out anything. I never made an effort to understand some parts of Maemo. Instead I just wanted to get rid of them (BME, DSME, HAL, OHM). I can I live with DBUS.. for now :)

Add.: I forgot upstart. I don't like it. It makes the whole boot process unduly complicated. The N900 doesn't need all of that. Just a "linear" boot script and another shutdown script.