Battery Tests, Homemade 3000mAh XL Battery & Q&A (POST #1) - New Layout - Page 132 - maemo.org

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goc9999	2012-06-05 , 13:45
Posts: 6 \| Thanked: 1 time \| Joined on Oct 2010	#1311

hi guys, has anyone ordered BL-5J from ebay, because all the ebay links from the first page are dead and I would like to order one that has at least 1200mAh (proven)

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	dr_frost_dk	2012-06-05 , 14:21
	Posts: 1,503 \| Thanked: 2,688 times \| Joined on Oct 2010 @ Denmark	#1312

i just got 2x of these HIGH CAPACITY BL-5J BATTERY FOR NOKIA 5800 XPRESSMUSIC.

And i will be updating post #1 soon.

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visN900	2012-06-05 , 14:37
Posts: 266 \| Thanked: 156 times \| Joined on Jun 2011 @ India	#1313

scud blue dream is a dream battery.. really wow.. my phone lasts a day on 3G usage+browsing.. on continuous browsing it comes for 7hrs.. excellent one.. luckily i got one

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goc9999	2012-06-05 , 15:36
Posts: 6 \| Thanked: 1 time \| Joined on Oct 2010	#1314

@ dr_frost_dk

have you measured them?

I just bought one

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	dr_frost_dk	2012-06-05 , 16:45
	Posts: 1,503 \| Thanked: 2,688 times \| Joined on Oct 2010 @ Denmark	#1315

Well the 2x i bought have not been mesured, but they are the same as i bought a long time ago, they are from the seller oig.buy where i bought them before and tested them.

And they tested in at 1250mAh, and you wanted a cheap battery that holds over 1200mAh right?

Fix you USB before and after it breaks
Feel free to contact me through PM, Skype or G.Talk

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goc9999	2012-06-05 , 22:00
Posts: 6 \| Thanked: 1 time \| Joined on Oct 2010	#1316

exactly, thx

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	misterc	2012-06-05 , 22:21
	Posts: 1,625 \| Thanked: 998 times \| Joined on Aug 2010	#1317

modified bq27000.sh so that it displays VDQ when in LOOP mode...

to install
(copy & paste {path} to get it to the right directory)

Code:

find /usr -name i2cget
{path}/i2cget
cp bq27000_vqd.txt {path}/bq27000_vdq.sh
chmod 755 {path}/bq27000_vdq.sh

to run & redirect output...

Code:

cd {path}
bq27000_vdq.sh >>/media/mmc/bq27000_vdq.out
bq27000_vdq.sh 60 >>/media/mmc/bq27000_vdq.out

will generate a file with content similar to

LOOPMODE=0
Reading values...........................done.

CSOC: 97 % RSOC: 97 %
Average Current: 202 mA
TTF: 65535 minutes TTE: 454 minutes
NAC: 1531 mAh CACD: 1531 mAh CACT: 1531 mAh
SI: 1 mA STTE: 64365 minutes
MLI: 1028 mA MLTTE: 88 minutes
AR: 0 mA ARTTE: 65535 minutes
Last Measured Discharge: 1574 mAh
Cycle Count since Learning: 0 Total Cycle Count since last full reset: 0
Reported Battery Voltage: 4010 mV
Battery Gauge die Temperature: 30 C
Flags: 0x04
Charge:0 NOACT:0 IMIN:0 CI:0 CALIP:0 VDQ:1 EDV1:0 EDVF: 0
eeprom data:
ILMD=2056 EDVF=3000 EDV1=3248 ISLC=20
DMF=14700 nanoVolt SD=201 thousandths of percent per day
AGELMD=1 TAPER=102 mA
IMLC=1028 mA
LOOPMODE=60
mv RSOC CSOC mA NAC CACD CACT VDQ TTE TEMP EDV1 LOW
22:59 3984 97 97 -242 1530 1530 1530 1 364 30 0

this way, it is easy to let the battery run empty & have all the values saved in a file automatically

Attached Files

bq27200_vdq.txt (6.7 KB, 148 views)

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Last edited by misterc; 2012-06-09 at 12:11. Reason: chmod 577 => 755

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	qwazix	2012-06-05 , 22:22
	Moderator \| Posts: 2,622 \| Thanked: 5,447 times \| Joined on Jan 2010	#1318

@estel, check out the galaxy note battery. 3.7v 2500mah, it will be a tight fit but maybe it's worth a try.

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daniel_m	2012-06-05 , 23:22
Posts: 105 \| Thanked: 46 times \| Joined on May 2011	#1319

Originally Posted by zimon

What is "SoC" here?

And "cells of different max capacity will get different SoC after same mAh used". But the smaller capacity battery is not giving as much currency as the bigger one, I think?

I am thinking of analogy of two water buckets, another one larger (mAh) than the other, but both have the same water level (voltage) and the level is at the same height (voltage). Both have same diameter (resistance) tube underneath going to the Y-connector and then the connecting tube is leaking water (current) out to somewhere.

I think, the buckets will be empty at the same time, and still no water is going from the larger bucket to the smaller one. (or there is an error in my thinking?)

Yes, you are right. But real life might be of another opinion

As long as the difference in capacity is not too high and their voltage is similar at the moment when you connect them, things should be fine. Of course both should have a similar internal resistance so that there won't be any voltage drop in one of them when the N900 draws power.
Looking forward to dr_frost_dk's results