Building a AA charger for 3DS

Thread Starter

jellytot

Joined May 20, 2014
72
We have a 3DS that we take everywhere. I'd like to build a portable charger using AA's. On the wall wart (AC adapter) it says the output is: DC 4.6V, 900mA.

My current parts list:
Case for project
3 AAs in series
Battery holders
3DS charging tip (I can get this)
wires/solder/glue

I don't think I need a voltage regulator since 3 AAs in series should be sufficient (please correct me if I'm wrong).

I'm a electronics newbie. Here's are my questions. Because a 900mA draw is alot, do I need a Current regulator? Does such a thing even exist? Once the current left in the batteries can't supply 900mA, what will happen? Will the 3DS continue to charge? Will it damage the 3DS?

Thanks in advance!
 

Dodgydave

Joined Jun 22, 2012
11,285
A mains adapter will keep providing the current when needed, batteries will only be able to provide for a short time until they start to reduce voltage, and go flat.
 

Thread Starter

jellytot

Joined May 20, 2014
72
A mains adapter will keep providing the current when needed, batteries will only be able to provide for a short time until they start to reduce voltage, and go flat.
So should I add more batteries (say 4-6 in series) and add a voltage regulator?
 
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