» iPod-Nano «  PORTABLE  USB-A  POWER-EXTENDER & -CHARGER,  home-made ...
******************************* ( 1.9 Ah ) *************************

B A C K G R O U N D :    The BATTERY of the new  »iPod-Nano«  ( in 2010 )
lasted  ~ 24 hours of listening before re-charging.  Now, after 10 years
later, only 5 hour listening-time - OhOh! - APPLE is not willing or able
to exchange the BUILD-IN BATTERY ... NOW THIS PROJECT SOLVE THE PROBLEM !

R E M A R K :   With a "NORMAL-USB-A" is an »iPod-Nano« NOT TO CHARGE !!!
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??? How to make the USB-A working with the "Special" MAC-Standard ???
         (a) Charging only - OR ...
         (b) CHARGING & LISTENING MUSIC  at the same time ...

   !!!  The "TRICK" is to provide USB-A Pins  (2)=(3) = 2.5 Volt  !!!
                                                        ========
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The FUSE (=Si= 0.8 A ) is in the BAKELITE-PIPE between 2xLi-Ion BATTERIES
CHARGING the 2xLi-Ion Cells: START = U = 8.4 V / I = 500 mA (limited) ...
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R E M A R K :   I had the same problem in the '90s  with limited power on
long-distance travels with my SONY »DiskMan«  -  I build a POWER-EXTENDER
to CLIP ON MY BELT (w. 3xNiCd-Cells ) - NOW I RECYCLE THE OLD UNIT into a
(2xLi-Ion) EXTENDER with my old IC = LM-309K = +5 Volt Stabilizer ...

         P.S.: SEGOR-electronics / Berlin: "Use a modern & cheaper MODUL"
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                      https://www.segor.de/shop?Q=@StepDown-Modul(USB3A)@
                       ( USB-Pins 2=3 are accessible on Modul Back-Side )
impressum:
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© C.HAMANN          http://public.BHT-Berlin.de/hamann           04/13/20