Hints for building USB battery charger for iPod

[ck84]

Hello everybody, I am trying to build a USB battery charger for my iPOD shuffle. Can anybody give me a hint? I will greatly appreciate your help.

 

[v_c]

Re: USB battery charger.

This should get you started.

**broken link removed**

You will also have to determine the characteristics of the battery
and maybe the charging profile.

Best regards,
v_c

 

[IanP]

Re: USB battery charger.

Here are some other options:

https://ww1.microchip.com/downloads/en/appnotes/00971a.pdf
**broken link removed**
https://www.linear.com/pc/downloadDocument.do?navId=H0,C1,C1003,C1037,D4540

Regards,
IanP

 

[Jack// ani]

USB battery charger.

hi all,

is it possibble to charge the ipod/other mp3 players, by simply putting external 5v dc with a current limiting resistor in series.....of the player's usb port and leaving the data pins unconnected??

i asking because...charging the battery via pc's usb port may not be possible on occasions....so a standanole charger turns quite useful!!!

thanks

 

[ehsanelahimirza]

Re: USB battery charger.

hi all,

is it possibble to charge the ipod/other mp3 players, by simply putting external 5v dc with a current limiting resistor in series.....of the player's usb port and leaving the data pins unconnected??

i asking because...charging the battery via pc's usb port may not be possible on occasions....so a standanole charger turns quite useful!!!

thanks

yes its possible but u have to use such an adopter that u r not using any resistance in series and it is supplying only required amount of current.

but if u cant find such an adopter, u have to select such a resistance that is not blocking all the current or max current. bcz mp3players have too low resistance for inputs so an AC2DC adopter with 200mA or something same would b used

 

[Jack// ani]

USB battery charger.

hi ehsanelahimirza,

thanks for reply....have to ever tried charging you player that way?? i'm asking because i dont want to end up blowing my $100 player!!!

 

[vicky]

Re: USB battery charger.

hi dear,

look this

www.hackaday.com/entry/1234000520028239