Question about Sony Walkman D-EJ1000 Personal CD Player

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The re-chargable batteries wouldn't stay charged,so I bought new ones ($45.00)but realized it has to stay in the electric charger base, I believe the button is broken. Where do I send to be repair

When you sit in plugged in base to charge the batteries the light doesn't stay lit, after overnite I figured the batteries should be charged but the CD player wouldn't play once you took it out of the battery charger stand. I believe the charging button is damaged and its old but plays great. Where would I take it to see if it could be repaired? Thank you, Dotti Murray

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SOURCE: Can a lithium ion battery be overcharged?

Here's a small FAQ I found: 1) My lithium ion battery is the SONY NP-FP70 Battery Pack. Does the fact that the battery is called a battery pack mean that it has built in circuitry to prevent an overcharge? No. I write with some authority since I've dissected too many and there is no such circuit in the battery. From a system perspective it doesn't belong there. 2) Is there any way of knowing if my SONY BC-TRP charger has the circuitry for preventing an overcharge? You'll have to ask, but the key clues are: a. The documention tells you to not leave it plugged in overnight. b. The battery gets too hot and melts the plastic. 3) If I charge my battery in my camcorder (SONY DCR-HC40), can I assume it has the built in circuitry to prevent an overcharge? a. One can't assume anything. b. But from what I read on that model, you plug it in and forget about it. To do that, it would have a proper charge circuit.

Posted on Sep 13, 2005

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SOURCE: new batteries will not charge

a technician ' s adjustable bench power supply - set for 9 volts at 1 amp - for a minute or so , will initialize most new lithium batteries ( a charger update may also be available ) ;

Posted on Jul 31, 2007

beergut707
  • 79 Answers

SOURCE: initial charging time

hi there
the first charge should be around 12 hours, this then teaches the battery its max load.
ignore the charger if tells you its charged after a couple of hours.
after the first charge use as normal.

hope this helps

beergut707

Posted on Oct 09, 2008

SOURCE: Sony cybershot f717 battery won't charge

Same for me too... And a bunch of other stuff! I can't choose to have the flash, can't use the veiwfinder...

Posted on Oct 31, 2008

welcomejee
  • 10594 Answers

SOURCE: do i need a special charger for the NE-720 internal battery

It needs AC-ES3010K2 ac charger to charge battery.

Click HERE and download user manual of Sony D-NE720 for further details.


Posted on Feb 08, 2009

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