maemo.org - Talk - Battery Tests, Homemade 3000mAh XL Battery & Q&A (POST #1)

I have finally calibrated my dual SCUD setup (yes, it takes few weeks to get it done with normal usage!) Now, this is rather amazing don't you think? Way more than expected and this is my 10th full charging cycle...

How did you test the Battery's mAh and voltage on the N900?

azkay

2012-07-27 12:49

Re: Battery Tests, Homemade 3000mAh XL Battery & Q&A (GOTO POST #1) SCUD is BACK!!!

Since using two batteries, when I go back to my single battery the N900 won't power on and when I charge it the Nokia screen shows up without the backlight and vibrates for half a second, turns off then repeats over and over.

Putting the two batteries in boots up fine. Any ideas?

sEKI	2012-07-28 08:51

Re: Battery Tests, Homemade 3000mAh XL Battery & Q&A (GOTO POST #1) SCUD is BACK!!!

Quote:

Originally Posted by Jaag (Post 1243742)

How did you test the Battery's mAh and voltage on the N900?

See Estel's guide here and very nice piece of scripts he put together called bnf.

sEKI	2012-07-28 08:56

Re: Battery Tests, Homemade 3000mAh XL Battery & Q&A (GOTO POST #1) SCUD is BACK!!!

Quote:

Originally Posted by azkay (Post 1243744)

Try turning it on, wait around 2 sec and then plug in the charger it should boot eventually. Why is this happaning I have no clue but mine was behaving similarly...

Estel

2012-07-28 18:26

Re: Battery Tests, Homemade 3000mAh XL Battery & Q&A (GOTO POST #1) SCUD is BACK!!!

Maybe springs that holds battery in place needs tightening? Also, single battery could just got discharged beyond safe limit. Check it's voltage with multimeter.

/Estel

sEKI	2012-07-29 10:14

Re: Battery Tests, Homemade 3000mAh XL Battery & Q&A (GOTO POST #1) SCUD is BACK!!!

Quote:

Originally Posted by Estel (Post 1244266)

Maybe springs that holds battery in place needs tightening? Also, single battery could just got discharged beyond safe limit. Check it's voltage with multimeter.

/Estel

Good point Estel, definately worth checking but that wasn't the case for neither of them on my device. The problem was gone since I flashed it to thumb from testing cssu.

Ariadeno

2012-08-02 10:38

Re: Battery Tests, Homemade 3000mAh XL Battery & Q&A (GOTO POST #1) SCUD is BACK!!!

Does anybody know if those blue dream scuds will be available again?

Hossein

2012-08-02 11:00

Re: Battery Tests, Homemade 3000mAh XL Battery & Q&A (GOTO POST #1) SCUD is BACK!!!

Thanks Estell for bq27x00 scripts and tutorial on battery capacity measurement; you stated that after the first time running the bq*.sh script you can do anything except for turning the device off.

I'd like to know if we can also recharge the device in that time? I recharged to 100% and ran the bq*.sh once. Now if I connect the N900 to USB a few times (but not let it go 100%) it affects the measurement?

dr_frost_dk

2012-08-02 11:24

Re: Battery Tests, Homemade 3000mAh XL Battery & Q&A (GOTO POST #1) SCUD is BACK!!!

Quote:

Originally Posted by Ariadeno (Post 1246398)

Does anybody know if those blue dream scuds will be available again?

Im hopefully receiving some soon for testing so we again have a supplier. (avartardeals)

Estel

2012-08-02 18:52

Re: Battery Tests, Homemade 3000mAh XL Battery & Q&A (GOTO POST #1) SCUD is BACK!!!

Quote:

Originally Posted by Hossein (Post 1246406)

I'd like to know if we can also recharge the device in that time? I recharged to 100% and ran the bq*.sh once. Now if I connect the N900 to USB a few times (but not let it go 100%) it affects the measurement?

I've been transferring files over mass-storage (without disabling bme, so it definitely charged), without affecting VDQ. Yet, if You overdo it - for example, connect and disconnect many times, or charge for too long - VDQ will reset to 0, until next full charge.

/Estel

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