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-   -   Battery Tests, Homemade 3000mAh XL Battery & Q&A (POST #1) - New Layout (https://talk.maemo.org/showthread.php?t=65568)

dr_frost_dk 2011-03-02 13:07

Re: Battery Tests and Battery Mod / Homemade Mugen Battery
 
1 Attachment(s)
Quote:

Originally Posted by Storm_11 (Post 958804)
ah ok that makes more sense then. Are you able to operate the phone whilst it is charging?

edit: lipo charger? The same as a li-ion charger thats commonly available for the n900?

Yes i can operate it when charging, and the wire is less in the way then the USB normally is.

No the chargers i normally use can take all kinds of battery's, depending on what model im using.

Here is a picure of 2x DX things combined to make a simple (not very fast) charger.

Car Charger for Nokia 2.0mm Cell Phones
Single 18650/17670 Lithium Battery Charger (1A Charging Current)

=

Attachment 18191

shadowjk 2011-03-02 21:23

Re: Battery Tests and Battery Mod / Homemade Mugen Battery
 
The included N900 "charger" is a power supply only. It outputs 5V. Any "charger" that connects to the MicroUSB port is a power supply. Also "chargers" that connect to 2mm port on older Nokia phones are power supplies.

It is important to never connect power supplies directly to batteries.

As you can see from dr_frost's picture, he has taken the cable from a car charger, and connected it to the output of a Li-Ion charger. A real charger, since you can see it's a cradle designed to connect directly to 18650 Li-Ion batteries.

Again, never ever connect power supplies directly to batteries. It can result in what the industry calls "venting with flame", or what normal people would call "explosion".

dr_frost_dk 2011-03-03 18:31

Re: Battery Tests and Battery Mod / Homemade Mugen Battery
 
UPDATE: 1350mAh Rechargeable Lithium Ion Battery BL-5J has been removed from the list, they couldn't get it apparently.

But anyway the 1420mAh is in transit and will hopefully arrive soon. Would be cool to get even more capacity then the japod even if it is only 50mAh, still 100mAh when in dual config.

dr_frost_dk 2011-03-03 20:36

Re: Battery Tests and Battery Mod / Homemade Mugen Battery
 
After talking to 'Julianrome' about his experience with 2250mAh Capacity BL-5J Battery For Nokia 5800 N900 C3 i have decided to add it to the list, it is bought and waiting for delivery.

Tinukedaya 2011-03-04 17:56

Re: Battery Tests and Battery Mod / Homemade Mugen Battery
 
Hmm. The battery meter widget is kinda messy for me.

it shows 2585.7% and 34.058V right now... :(

dr_frost_dk 2011-03-04 19:32

Re: Battery Tests and Battery Mod / Homemade Mugen Battery
 
Quote:

Originally Posted by Tinukedaya (Post 960741)
Hmm. The battery meter widget is kinda messy for me.

it shows 2585.7% and 34.058V right now... :(

the fix is here http://talk.maemo.org/showthread.php?t=70590

Tinukedaya 2011-03-04 21:13

Re: Battery Tests and Battery Mod / Homemade Mugen Battery
 
Thanks, that solve it, now to rework it to fit my theme... Althought it means no temperature reading. No big deal. It wasn't too accurate anyway.

dr_frost_dk 2011-03-05 15:35

Re: Battery Tests and Battery Mod / Homemade Mugen Battery
 
scud battery has been tested

page #1, post #1 for results

all i can say is that MOD 4 will soon be made :)
and i was wrong about the about 1400mAh limit of the BL-5J size

dr_frost_dk 2011-03-05 23:44

Re: Battery Tests and Battery Mod / Homemade 3000mAh Mugen Battery
 
Dual Scud battery tested

- 3044 mAh -

Storm_11 2011-03-06 01:19

Re: Battery Tests and Battery Mod / Homemade Mugen Battery
 
Quote:

Originally Posted by dr_frost_dk (Post 958824)
Yes i can operate it when charging, and the wire is less in the way then the USB normally is.

No the chargers i normally use can take all kinds of battery's, depending on what model im using.

Here is a picure of 2x DX things combined to make a simple (not very fast) charger.

Car Charger for Nokia 2.0mm Cell Phones
Single 18650/17670 Lithium Battery Charger (1A Charging Current)

=

Attachment 18191

I have one of these:

http://www.hollyhockbatteries.com.au/CX4000PRO.html

Rated voltages are: 3.6v and 7.2v for lithium batteries
1200mA max. charge current

I use it to charge the battery only. Although its not 4.2v, would it still be suitable, if I hook the +'s and -'s from the charger to the points you specified?


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