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Rockbox mail archiveSubject: charger test resultscharger test results
From: Uwe Freese <mail_at_uwe-freese.de>
Date: Thu, 29 Aug 2002 15:53:08 +0200 Hello, For improving the battery FAQ, I now made some tests with the charger and have maybe interesting new results: AJB model: Recorder 20 Archos charger model: "AC Adaptor, KA23D090060035G, 9,0V= 600mA Ext. 230 V~ 50 Hz" Voltage of Batteries when tested: ~ 5,2 V (charging current depends on battery voltage a little bit) Archos charger tests Connected to AJB Recorder, not charging: 13,7 Volt Connected to AJB Recorder, charging: going down to 10,4 Volt, charging with 320 mA External Adjustable Power Supply tests Voltage charging current (limited only by the AJB) 7,0V 10 mA 7,5V 30 mA 8,0V 50 mA 8,5V 70 mA 9,0V 140 mA 9,5V 250 mA 10,0V 330 mA 10,5V 350 mA 11,0V 350 mA 11,5V 350 mA 12,0V 350 mA So I guess the car charger is only a connection to 12 V with a fuse. I personally would therefore use a 10V regulator 7810 (low drop, because the voltage difference to the car battery voltage is low) with a 500mA fuse, because the charging current is the same as at 12V, 10 V is below my original archos supply and should be really safe. And with 10 V input, the DCDC regulator in the archos shouldn't get so hot as with 12 V (but it should work, too). Bye, Uwe. Received on 2002-08-29 Page template was last modified "Tue Sep 7 00:00:02 2021" The Rockbox Crew -- Privacy Policy |