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-   Nokia N900 (https://talk.maemo.org/forumdisplay.php?f=44)
-   -   New Nokia BL-5J only charge to 85% (https://talk.maemo.org/showthread.php?t=84182)

toxaris 2012-05-10 09:41
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.
Code:
  battery.charge_level.capacity_state = 'full'  (string)
  battery.charge_level.current = 8  (0x8)  (int)
  battery.charge_level.design = 8  (0x8)  (int)
  battery.charge_level.last_full = 8  (0x8)  (int)
  battery.charge_level.percentage = 87  (0x57)  (int)
  battery.charge_level.unit = 'bars'  (string)
  battery.is_rechargeable = true  (bool)
  battery.present = true  (bool)
  battery.rechargeable.is_charging = false  (bool)
  battery.rechargeable.is_discharging = true  (bool)
  battery.remaining_time = 21600  (0x5460)  (int)
  battery.remaining_time.calculate_per_time = false  (bool)
  battery.reporting.current = 1215  (0x4bf)  (int)
  battery.reporting.design = 1394  (0x572)  (int)
  battery.reporting.last_full = 1215  (0x4bf)  (int)
  battery.reporting.unit = 'mAh'  (string)
  battery.type = 'pda'  (string)
  battery.voltage.current = 4152  (0x1038)  (int)
  battery.voltage.design = 4200  (0x1068)  (int)
  battery.voltage.unit = 'mV'  (string)
  info.addons = {'hald-addon-bme'} (string list)
  info.capabilities = {'battery'} (string list)
  info.category = 'battery'  (string)
  info.parent = '/org/freedesktop/Hal/devices/computer'  (string)
  info.product = 'Battery (BME-HAL)'  (string)
  info.subsystem = 'unknown'  (string)
  info.udi = '/org/freedesktop/Hal/devices/bme'  (string)
  maemo.charger.connection_status = 'disconnected'  (string)
  maemo.charger.type = 'none'  (string)
  maemo.rechargeable.charging_status = 'off'  (string)
  maemo.rechargeable.positive_rate = false  (bool)
Should I return the battery too Nokia or will a few recharge cycles fix it?

Hurrian 2012-05-10 10:07
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.

toxaris 2012-05-10 10:49
Re: New Nokia BL-5J only charge to 85%
 
Quote:
Originally Posted by Hurrian (Post 1204633)
Where do you find these new 1430mAh batteries?

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

vi_ 2012-05-10 11:16
Re: New Nokia BL-5J only charge to 85%
 
Quote:
Originally Posted by Hurrian (Post 1204633)
Where do you find these new 1430mAh batteries?

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

toxaris 2012-05-10 12:03
Re: New Nokia BL-5J only charge to 85%
 
Quote:
Originally Posted by vi_ (Post 1204677)
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).
But I guess I need to use BQ27x00 instead of BME to get access to the last 200mAh.

magick777 2012-05-10 12:32
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.

freemangordon 2012-05-10 12:39
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.

toxaris 2012-05-10 16:14
Re: New Nokia BL-5J only charge to 85%
 
Quote:
Originally Posted by magick777 (Post 1204721)
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.
I find no info about manufacturedate in the box.
Edit: no instead of now

toxaris 2012-05-10 16:21
Re: New Nokia BL-5J only charge to 85%
 
Quote:
Originally Posted by freemangordon (Post 1204725)
The same problem here, and deffinitely my 1430 mAh battery is genuine, I took it from asha 200 I bought to my GF.
What to you say, try recalibrate?
http://talk.maemo.org/showpost.php?p...&postcount=846

freemangordon 2012-05-10 16:48
Re: New Nokia BL-5J only charge to 85%
 
Quote:
Originally Posted by toxaris (Post 1204826)
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


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