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maemo.org - Talk (https://talk.maemo.org/index.php)
-   Accessories (https://talk.maemo.org/forumdisplay.php?f=17)
-   -   Mugen Power Batteries (https://talk.maemo.org/showthread.php?t=38068)

Rob1n 2010-03-31 19:46
Re: Mugen Power Batteries
 
Quote:
Originally Posted by zimon (Post 590266)
I found out that after taking a Mugen battery off and then inserting it and booting seems to fix the battery level indicator. But then rebooting again without removing the battery, makes the level indicators "broken" again.
I think the N900 recalibrates the battery sensors on boot - presumably the settings are specific to the standard battery.

zimon 2010-03-31 19:47
Re: Mugen Power Batteries
 
Quote:
Originally Posted by Milhouse (Post 589717)
Maybe someone with one of these batteries should file a bug in https://bugs.maemo.org/. Probably too late for PR1.2 though.
https://bugs.maemo.org/show_bug.cgi?id=9789

zimon 2010-03-31 20:30
Re: Mugen Power Batteries
 
Quote:
Originally Posted by shadowjk (Post 589412)
I measured the Battery Size Indicator pin with a dmm, and comparing it with BL-5C, BP-4L and BL-5J does make it look like it's properly reporting the bigger capacity.
So you measured resistance between what and what pins?
What is the formula to convert the resistance then to capacity of the battery, do you know?

shadowjk 2010-04-02 13:04
Re: Mugen Power Batteries
 
Between GND and the third (unmarked) pin. I don't know the formula.

EDIT:

Seems like there's a design flaw in the mugen battery. The resistance on BSI-GND varies according to battery temperature. Thus the reported design capacity varies depending on how warm the battery is.

Edit:

Sent an email to mugen about it..

gabby131 2010-04-02 13:09
Re: Mugen Power Batteries
 
i just get 1 more bl-5j battery and an external charger.

that way, plugging my n900 on a wall charger is minimal, and i dont have to wait for 2 hours before can use my n900 if charging

shadowjk 2010-04-02 13:57
Re: Mugen Power Batteries
 
Quote:
Originally Posted by gabby131 (Post 592597)
i just get 1 more bl-5j battery and an external charger.

that way, plugging my n900 on a wall charger is minimal, and i dont have to wait for 2 hours before can use my n900 if charging
Well you can use your N900 while charging as long as you've got a sufficiently long cable :) You don't need to charge it full once you start charging either, you can interrupt and resume the charging whenever you want.

gabby131 2010-04-02 14:42
Re: Mugen Power Batteries
 
Quote:
Originally Posted by shadowjk (Post 592647)
Well you can use your N900 while charging as long as you've got a sufficiently long cable :) You don't need to charge it full once you start charging either, you can interrupt and resume the charging whenever you want.
that's right! and you dont have to turn your phone off

di1in 2010-04-02 15:20
Re: Mugen Power Batteries
 
Quote:
Originally Posted by maxximuscool (Post 588934)
I thought Mugen is powering HONDA Vtech Engine :D
You're mistaken, they tune and power anything that's Honda :)

moneytoo 2010-04-03 14:09
Re: Mugen Power Batteries
 
1st charge: 2,5 days of battery life (many hours of web surfing)
2nd charge: 6 days of battery life (every day use - some web surfing, checking for updates, pim/agenda)

debernardis 2010-04-04 08:03
Re: Mugen Power Batteries
 
FYI I've hacked my Mugen back cover with white sticky tape (where there should be the white spot that signals the lens cover is open) and a piece of a fridge magnet in the place of the original cover magnet. It wasn't difficult, the only point is to find a magnet powerful enough.

Mugen says they'll send two working covers when they are ready; in the meantime, my hacked one works :)


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