How to charge a li-ion battery?/ Cheap battery deal

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marioxb
Posts:15
Joined:Fri Dec 18, 2009 3:07 pm
How to charge a li-ion battery?/ Cheap battery deal

Post by marioxb » Wed Jan 02, 2013 12:59 pm

Just bought this battery at Best Buy:

Rocketfish™ - DSi Power Shell with Rechargeable Backup Battery

(my BB has it for 99 cents). I don't have a DSi, but I bought this thinking it would work for my 3DS, considering they use the same charger. The battery doesn't fit, so I took it apart. Just wondering if I could use this in a project, if I solder on a charge port of some sort (probably mini USB). The way this one works is it acts as a second battery in the dsi. It goes in the slot of the dsi where the original battery would be, and then the original battery goes in a slot in this thing. Since it's designed in this way, it has no charging port of its own and uses the dsi charging port.

Wondering if anyone knows if I take a li-ion battery such as this and add solder a charger/ charging port will that charge it, or does it have to be designed to be charged in this way?

ProgMetalMan
Posts:257
Joined:Sat Feb 05, 2011 8:18 pm

Re: How to charge a li-ion battery?/ Cheap battery deal

Post by ProgMetalMan » Wed Jan 02, 2013 5:40 pm

Well, you need a smart charger. That battery is terrible anyway.
ShockSlayer wrote:Proggy's right.
ttsgeb wrote:mfw prog was not only right, but 100% so.

marioxb
Posts:15
Joined:Fri Dec 18, 2009 3:07 pm

Re: How to charge a li-ion battery?/ Cheap battery deal

Post by marioxb » Thu Jan 03, 2013 10:07 am

Ah, ok I will keep looking. It does seem to work pretty well on a DSi, according to the reviews on Best Buy.

ProgMetalMan
Posts:257
Joined:Sat Feb 05, 2011 8:18 pm

Re: How to charge a li-ion battery?/ Cheap battery deal

Post by ProgMetalMan » Thu Jan 03, 2013 11:56 am

The DSi doesn't use a whole lot of power, that's why.
ShockSlayer wrote:Proggy's right.
ttsgeb wrote:mfw prog was not only right, but 100% so.

marioxb
Posts:15
Joined:Fri Dec 18, 2009 3:07 pm

Re: How to charge a li-ion battery?/ Cheap battery deal

Post by marioxb » Fri Jan 04, 2013 3:45 pm

Oh, well I probably should have said what I wanted this for. Oops. I want to make a wii remote/ classic controller hybrid with built in rechargable battery. The wii remote runs on 2 AAs (or AAAs if I use the smaller Power A brand Wii remote).

So what exactly is a smart charger then?

ProgMetalMan
Posts:257
Joined:Sat Feb 05, 2011 8:18 pm

Re: How to charge a li-ion battery?/ Cheap battery deal

Post by ProgMetalMan » Fri Jan 04, 2013 4:28 pm

I'm not sure, that battery may be okay then.
http://forums.benheck.com/viewtopic.php?f=43&t=34576
ShockSlayer wrote:Proggy's right.
ttsgeb wrote:mfw prog was not only right, but 100% so.

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