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Rockbox mail archiveSubject: Do you have an FM Recorder? Help me with measurement values for charging code!Do you have an FM Recorder? Help me with measurement values for charging code!
From: Uwe Freese <mail_at_uwe-freese.de>
Date: Sun, 26 Jan 2003 13:36:22 +0100 Hello, I wrote the current charger code and I read here that charging is not working correctly with FM Recorder because of the LiIon battery. I'm willing to change/add the code needed for the FM Rec., but I need some input. So if you have an FM Recorder, you can help me: - What is the maximum voltage the LiIon battery has when it's full? - What is the voltage when the original Firmware shut's off the AJB and says it's empty? - Charging LiIon is usually charging with a constant voltage. It may be that the FM Recorder has an other circuit in it and it charges the battery the whole time (when charger plugged in). Can someone measure if the battery is charged the whole time with the original firmware? (measure the charging current and the voltage if the battery is already full) - To show the correct battery level percentage, I need voltage values over a complete decharging cycle. Please charge the battery with the original firmware, unplug the charger, start Rockbox, play back music and go to the debug menu (battery menu). Write down at about 20 voltages over the complete decharging cycle like this (it needn't be exactly the same intervals): 0:00 5,5 V 0:35 5,4 V 1:02 ... ... 10:00 4,5 V (shutoff) Thanks for your help! Bye, Uwe. Received on 2003-01-26 Page template was last modified "Tue Sep 7 00:00:02 2021" The Rockbox Crew -- Privacy Policy |