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Rockbox mail archiveSubject: AW: More aggressive Rockbox battery chargingAW: More aggressive Rockbox battery charging
From: Matthias Klumpp <Matthias.Klumpp_at_gmx.de>
Date: Mon, 7 Feb 2005 18:50:13 +0100 Hi Jerry (and Linus), # -----Ursprüngliche Nachricht----- # Von: rockbox-bounces_at_cool.haxx.se # [mailto:rockbox-bounces_at_cool.haxx.se]Im Auftrag von Jerry Van Baren # Gesendet: Montag, 7. Februar 2005 03:34 # An: rockbox_at_cool.haxx.se # Betreff: Re: More aggressive Rockbox battery charging # # # I updated the patch and the ajbrec.ajz file. I had a couple of "ifdef"s when # I really wanted "ifndef"s (oops), ;-O)) # but the big change is increasing the # maximum top-off/trickle charge duty cycle to be 59/60 (was 24/60). I # strongly suspect this is the root of Matthias' problem. Anyhow, here the results of yesterday's test: - Batteries were not fully charged (I wanted to do this in a 2nd test today, that is now obsolete). - V2.4 flashed, your .ajz rolo'ed - Remaining capacity showed 6h44m (as nearly always with unmodified V2.3/V2.4) - It then charged (bat. symbol running) for aprox. 1h - Then bat. symbol was 100% (not running anymore) and remaining cap. showed 11h25m (that's pretty near to what I expect with 2000mAh :-)) - I started at 10:45 - At 17:00 (after the magic 6h limit, it was still playing) - I got that :-)))) in my eyes - At 18:30 there was finally the :-(( in my eyes: JB stuck, batteries empty, ATA Error -1 - (Maybe) intersting is, that it showed a remaining cap. 11h25m until the end. # Matthias is using a 9+v charger which, according to the FAQ, gives him about # 140mA current into the Archos. I was once measuring 80mA into the Archos (V2.3, HDD not running, battery symbol bar running). # The problem is, this is only slightly more than is necessary just to run the AJR # (and less than needed when the disk spins up). Please keep in mind: The supply is able to provide up to 1A, if needed. It's just the JB not "sucking" more than 80mA (in my case). # With a limit of 40% duty cycle (24/60), his charger is falling behind. # # Matthias: please try the new load. Ok, I'll try that with fresh charged batteries during the night (in Germany). # I suspect the load from yesterday will NOT work significantly better for you Not really (but virtually ;-)))) # since it still is limited to a 40% duty cycle. # I'm hoping this new load will cure your charger blues :-). We'll see, pray and hope ;-))))) I'll tell you tomorrow. Greetings Matthias _______________________________________________ http://cool.haxx.se/mailman/listinfo/rockbox Received on 2005-02-07 Page template was last modified "Tue Sep 7 00:00:02 2021" The Rockbox Crew -- Privacy Policy |