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Ferret-Simpson
post Mar 20 2006, 11:40 AM
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http://www.solware.co.uk/psp/psp-battery.shtml

I SWEAR that would just detonate the PSP battery. . ..
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pelrun
post Feb 11 2007, 07:25 PM
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Ntw's circuit is pretty scary.

The only component in the circuit that's doing anything is the diode (the resistor only protects the LED), which drops the charging voltage to approximately 4.4V.

LiIon cells explode when charged beyond 4.3V.

And that's assuming it's plugged into a properly regulated USB port giving 5V. A cheap AC-to-USB charging adapter might be putting out more than that.

I'd build a simple charger from a LiIon charger IC (say Maxim's nifty looking MAX1555, I really must order some samples) which would be almost as simple as Ntw's circuit, safer, and you get a "battery full" indicator into the bargain! biggrin.gif
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Ferret-Simpson   Battery Extenders   Mar 20 2006, 11:40 AM
Ferret-Simpson   http://www.consolesandgadgets.co.uk/catalo...atter...   Mar 20 2006, 11:48 AM
rrnwexec   7200 mAh or stated another way... enough to power...   Mar 20 2006, 02:46 PM
Da_Blitz   http://www.consolesandgadgets.co.uk/catalo...atte...   Mar 23 2006, 04:53 AM
jpmatrix   QUOTE(Da_Blitz @ Mar 23 2006, 02:53 PM) http:...   Mar 24 2006, 04:25 AM
rrnwexec   QUOTE(Da_Blitz @ Mar 23 2006, 02:53 PM)http:/...   Mar 24 2006, 08:00 AM
macemoneta   I use this with my Sl-5500: http://cgi.ebay.com/w...   Mar 26 2006, 07:35 AM
Curious Aardvark   the first unit is actually an 1800 battery with a ...   Mar 28 2006, 02:12 AM
ntw1103   I am using a custom battery pack that I made. bat...   Jan 8 2007, 09:57 PM
daniel3000   QUOTE(ntw1103 @ Jan 9 2007, 07:57 AM)I am usi...   Jan 9 2007, 12:00 AM
Ling   I am using the Joytech PSP Power Extender. I got m...   Jan 11 2007, 06:26 PM
Jon_J   I know this is more expensive, as most all things ...   Jan 11 2007, 07:29 PM
ntw1103   I will post the diagram as soon as I make one.   Jan 11 2007, 07:35 PM
speculatrix   Brando have a good range of PSP power accessories:...   Jan 12 2007, 01:46 AM
ntw1103   Okay, here is the diagram for my battery. This is ...   Feb 9 2007, 07:03 PM
speculatrix   QUOTE(ntw1103 @ Feb 10 2007, 04:03 AM)Okay, h...   Feb 10 2007, 12:45 PM
pelrun   Ntw's circuit is pretty scary. The only compo...   Feb 11 2007, 07:25 PM
Da_Blitz   i am assuming nicads here, if so then the charging...   Feb 13 2007, 09:30 PM
jpmatrix   hi here i've just found and bought the Etitech...   Apr 30 2007, 04:53 AM
Capn_Fish   I'm looking at building a battery extender for...   Jun 3 2007, 02:41 PM
speculatrix   QUOTE(Capn_Fish @ Jun 3 2007, 11:41 PM)I...   Jun 4 2007, 02:15 PM
Capn_Fish   QUOTE(speculatrix @ Jun 4 2007, 05:15 PM)QUOT...   Jun 4 2007, 02:52 PM
speculatrix   you have to have an intelligent charging circuit f...   Jun 5 2007, 03:45 AM
pelrun   It's really a bad idea to do this yourself, un...   Jun 5 2007, 05:58 AM
laan   Purchased this one today: http://www.portablepowe...   Jan 14 2008, 04:11 AM
speculatrix   QUOTE(laan @ Jan 14 2008, 12:11 PM) http:...   Jan 14 2008, 04:48 AM
laan   QUOTE(laan @ Jan 14 2008, 01:11 PM) Purch...   Jan 14 2008, 11:15 AM
tanjian2   I've had a Zap Universal Power supply (blew up...   Jan 15 2008, 01:55 AM
jpmatrix   QUOTE(laan @ Jan 14 2008, 01:11 PM) Purch...   Jan 15 2008, 04:48 AM
Capn_Fish   Something like this: http://www.sparkfun.com/comm...   Jul 14 2008, 07:56 PM
xamindar   I am looking for a battery extender that I can plu...   May 11 2010, 05:19 PM
koan   I've been using a Sanyo Eneloop KBC-L2 for som...   May 12 2010, 01:36 AM
xamindar   Thanks for the recommendations. I didn't know ...   May 12 2010, 02:54 AM
xamindar   Well, got it. It works but gets really hot. It end...   May 26 2010, 05:08 PM
koan   QUOTE(xamindar @ May 27 2010, 11:08 AM) W...   May 27 2010, 04:56 AM


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