maemo.org - Talk - I just bought 1500mah battery but..

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- - I just bought 1500mah battery but.. (https://talk.maemo.org/showthread.php?t=54117)

Re: I just bought 1500mah battery but..

HQ PIC below.

negative feedback left. Thanks guys

Code:

http://i50.tinypic.com/xemnvs.jpg

Re: I just bought 1500mah battery but..

Quote:

Originally Posted by patt2k (Post 683760)

hey guys I just bought a 1500mah battery on ebay it was shipped from the UK

something is not right? is it fake ? or this battery will show 694 it's extended and it will work like 1500? Im not sure.

The figure quoted is basically rubbish.
It's reading the value of one resistor on the battery - _not_ the actual battery capacity.

The mugen battery - for example - also reads low - though in that case, as the resistor varies with temperature - the apparant capacity does too!

The simplest way is to do a rundown test.
Download flashlight.
Charge till green light goes on.
Turn flashlight on.
Wait till it shuts down. Time this.
Repeat with new battery.

Re: I just bought 1500mah battery but..

I would like to point out that lithium Ion batteries don't perform the same as lithium polymer... Nokias batteries are lithium polymer which means they discharge slowly and hold there charge but it also makes them expensive. Lithium ion are not as good at holding a charge on an always on device and discharge rather quickly, better suited for products designed to pull a large amount of energy such as a laptop. So a 1500Miliamp lithium Ion batter will not last anywhere near as long as a lithium polymer. This is why you should only use the nokia charger because lithium polymer batteries are prone to exploding when charged incorrectly.

Re: I just bought 1500mah battery but..

DISCLAIMER I'm not associated with Goki ^^

I'm using GOKI for NK BL5J as a spare battery for N900. Its sticker says "Made in Japan", though I'm 100% sure that it's manufactured in China and packaged in Japan. It even comes with a USB charger in one package. I'm not sure about its price, because it comes with my N900 as a gift pack, so I think it's pretty cheap.

Below please find the hal-device dme dumps for your reference:

Orignal Nokia battery comes with N900

Code:

udi = '/org/freedesktop/Hal/devices/bme'

  info.addons = { 'hald-addon-bme' } (string list)

  maemo.charger.type = 'host 500 mA'  (string)

  maemo.charger.connection_status = 'connected'  (string)

  maemo.rechargeable.charging_status = 'on'  (string)

  maemo.rechargeable.positive_rate = true  (bool)

  battery.present = true  (bool)

  info.product = 'Battery (BME-HAL)'  (string)

  info.subsystem = 'unknown'  (string)

  battery.is_rechargeable = true  (bool)

  info.udi = '/org/freedesktop/Hal/devices/bme'  (string)

  battery.charge_level.unit = 'bars'  (string)

  battery.remaining_time = 7200  (0x1c20)  (int)

  battery.type = 'pda'  (string)

  battery.charge_level.percentage = 71  (0x47)  (int)

  battery.charge_level.design = 8  (0x8)  (int)

  battery.charge_level.capacity_state = 'ok'  (string)

  battery.rechargeable.is_discharging = false  (bool)

  battery.charge_level.last_full = 7  (0x7)  (int)

  battery.reporting.design = 1258  (0x4ea)  (int)

  battery.reporting.last_full = 867  (0x363)  (int)

  battery.reporting.current = 903  (0x387)  (int)

  battery.voltage.unit = 'mV'  (string)

  battery.voltage.design = 4200  (0x1068)  (int)

  info.category = 'battery'  (string)

  battery.voltage.current = 3947  (0xf6b)  (int)

  battery.remaining_time.calculate_per_time = false  (bool)

  info.parent = '/org/freedesktop/Hal/devices/computer'  (string)

  battery.charge_level.current = 7  (0x7)  (int)

  battery.rechargeable.is_charging = true  (bool)

  info.capabilities = { 'battery' } (string list)

  battery.reporting.unit = 'mAh'  (string)

GOKI for NK BL5J Battery pack

Code:

udi = '/org/freedesktop/Hal/devices/bme'

  info.addons = { 'hald-addon-bme' } (string list)

  maemo.charger.type = 'host 500 mA'  (string)

  maemo.charger.connection_status = 'connected'  (string)

  maemo.rechargeable.charging_status = 'on'  (string)

  maemo.rechargeable.positive_rate = true  (bool)

  battery.present = true  (bool)

  info.product = 'Battery (BME-HAL)'  (string)

  info.subsystem = 'unknown'  (string)

  battery.is_rechargeable = true  (bool)

  info.udi = '/org/freedesktop/Hal/devices/bme'  (string)

  battery.charge_level.unit = 'bars'  (string)

  battery.remaining_time = 7200  (0x1c20)  (int)

  battery.type = 'pda'  (string)

  battery.charge_level.percentage = 94  (0x5e)  (int)

  battery.charge_level.design = 8  (0x8)  (int)

  battery.charge_level.capacity_state = 'ok'  (string)

  battery.rechargeable.is_discharging = false  (bool)

  battery.charge_level.last_full = 0  (0x0)  (int)

  battery.reporting.design = 1247  (0x4df)  (int)

  battery.reporting.last_full = 0  (0x0)  (int)

  battery.reporting.current = 1183  (0x49f)  (int)

  battery.voltage.unit = 'mV'  (string)

  battery.voltage.design = 4200  (0x1068)  (int)

  info.category = 'battery'  (string)

  battery.voltage.current = 4069  (0xfe5)  (int)

  battery.remaining_time.calculate_per_time = false  (bool)

  info.parent = '/org/freedesktop/Hal/devices/computer'  (string)

  battery.charge_level.current = 8  (0x8)  (int)

  battery.rechargeable.is_charging = true  (bool)

  info.capabilities = { 'battery' } (string list)

  battery.reporting.unit = 'mAh'  (string)

gdiff of above

Code:

~$ gdiff battery_original.txt battery_new.txt

15c15

<   battery.charge_level.percentage = 71  (0x47)  (int)

---

>   battery.charge_level.percentage = 94  (0x5e)  (int)

19,22c19,22

<   battery.charge_level.last_full = 7  (0x7)  (int)

<   battery.reporting.design = 1258  (0x4ea)  (int)

<   battery.reporting.last_full = 867  (0x363)  (int)

<   battery.reporting.current = 903  (0x387)  (int)

---

>   battery.charge_level.last_full = 0  (0x0)  (int)

>   battery.reporting.design = 1247  (0x4df)  (int)

>   battery.reporting.last_full = 0  (0x0)  (int)

>   battery.reporting.current = 1183  (0x49f)  (int)

26c26

<   battery.voltage.current = 3947  (0xf6b)  (int)

---

>   battery.voltage.current = 4069  (0xfe5)  (int)

29c29

<   battery.charge_level.current = 7  (0x7)  (int)

---

>   battery.charge_level.current = 8  (0x8)  (int)

Hope this help.

Re: I just bought 1500mah battery but..

Hi, all there,

Like I said in the earlier thread, the OEM battery is not a problem in China now.
Because most of the Nokia batteries (or you can say almost all the cellphone batteries / MP3 player batteries ) are produced in China, Guangdong province.

There are many versions BL-5J here and the quality is also very good.

The same quality with only 1/6 in price. Like here :

http://www.newegg.com.cn/Product/65-c01-750.htm
http://www.newegg.com.cn/Product/65-c08-078.htm
http://www.icson.com/Items/ItemDetail.aspx?ItemID=58804
http://www.icson.com/Items/ItemDetail.aspx?ItemID=36659

And for the size of BL-5J, the maximum capacity should be about 1350mAH.
Any capacity above 1350mAH is not the true number.

I am using a early version 1250mAH PISEN battery.

The official website is here :
http://www.pisen.com.cn/show_pr.asp?id=630

PISEN is a famous brand in China. And many other brands make batteries for NOKIA / Apple cellphones.

In the battery-eye in my N900, it shows 1260mAH.

http://attach.mobile01.com/attach/20...869bd17935.png

Re: I just bought 1500mah battery but..

I agree. Foxconn manufactures iPhone and iPad for Apple, and their factories are in China. (I deliberately use Foxconn as an example as you may have heard of it in the headlines news lately)

The battery in question might be real enough, but the label is not. ^^

Re: I just bought 1500mah battery but..

Quote:

Originally Posted by 9000 (Post 684615)

DISCLAIMER I'm not associated with Goki ^^

I'm using GOKI for NK BL5J as a spare battery for N900. Its sticker says "Made
<snip>
Below please find the hal-device dme dumps for your reference:

Orignal Nokia battery comes with N900

Code:



  battery.reporting.design = 1258  (0x4ea)  (int)

Hope this help.

This is unfortunately quite irrelevant.

BME does not read the capacity of the battery using any charge meter - it simply measures the value of one component - a resistor - in the battery - which is set to indicate the designed capacity of the battery.

This means that a battery can declare whatever capacity it wants - simply by changing that $.005 component.
This does not however change the fundamental capacity of the battery.
That could in principle be measured by the http://wiki.maemo.org/N900_Hardware_Charge_Meter onboard charge meter - but this is not functional with the existing software.

Early models of the mugen battery - while having a greatly increased real capacity read very low on BME due to this.

Re: I just bought 1500mah battery but..

does newegg.cn ship to US?

Re: I just bought 1500mah battery but..

I`ve just bought 1930MAh battery from for my N900, (designed for 5800) and on battery eye shows only 1290Mah.
Chinese bussines and lies....

UK based shop http://stores.ebay.co.uk/E-Cell-Global

Re: I just bought 1500mah battery but..

I would just avoid buying third party batteries, it might discharge fast, swell or explode, make your mobile unstable (it did it with my 5800, had to buy a fake for an emergency), and i wouldn't be surprised if it's able to fry your mobile if it doesn't give stable voltages, or it might just be a low mah in a very shiny packaging, just buy the original, it's not like they are expensive, plus they live much longer without loosing capacity.