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Battery Tests, Homemade 3000mAh XL Battery & Q&A (POST #1) - New Layout
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independent
2013-03-18 , 09:27
Posts: 78 | Thanked: 84 times | Joined on Aug 2012
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1495
Hello. I mentioned several pages back I had one of the new nokia bl-5j batteries that come with newer Nokia phones (this one from an X1-00). I've had it I most a year I suppose. Not done major duty except trying to get the built in chip to stop registering at 2044mAh.. Using bnf and the bq scripts for battery monitoring. Anyway, just to say got 1415mAh discharge for what is reported as a 1430mAh cell. So, guess it comes above reported..
EDIT:
I say it comes in above reported mAh because it is an old battery ie most of a year old and having been used during that time. Using the bq27200.sh script and fully discharging the battery without charging after reaching "VDQ 1" gives me a measured discharge of 1415mAh.
I would like to add, getting from the 2044mAh registered charge level (takes 3x calibrations with a normal battery) is not easy as sometimes (yes following all of the guidelines) the phone turns off before the voltage goes below 3.248v. That said, bnf and the bq27200 i2cget scripts make for a truly fantastic tool and once calibrated bnf is a deceptively simple, very accurate battery "tank" level tool. Thank you Estel and everyone else (shadowjk, et al) who made it possible!
Last edited by independent; 2013-03-19 at
21:36
. Reason: Because I tested the battery after using it for a year and this was not clear in the post
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