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Rockbox mail archiveSubject: RE: Trickle ChargingRE: Trickle Charging
From: Justin <jaf60_at_it.canterbury.ac.nz>
Date: Tue, 10 Dec 2002 09:10:47 -0800 I suspect there is an additional advantage here to continuous low-current trickle charging over a pulse top-up charging based on voltage - the batteries are in series, and are charged in series. This means that when one gets slightly out of whack with the rest (in terms of charge), it's a downward spiral - the charger no-longer charges any of the batteries well, and things get worse and worse. Now I suspect a trickle charge, on the other hand _will_ charge batteries in series correctly even when one of them is out of whack - the normal batteries reach full charge, and because the current is low enough that a fully charged battery just dissipates it as heat rather than over-charge, the trickle charging simply continues after the normal batteries are full, and thus eventually brings any rogue batteries up to full charge also, so the batteries are once again all equally charged, and the normal pulse charger can do its thing without fear of exacebating any battery charge differences. Battery charging ain't my forte, so I reserve the right to be wrong here. It seems intuitive that due to the problems of the batteries being in series, an occasional trickle-charge could keep the them healthy for the pulse charging, but battery charging is not known for being intuitive :-) >I''m not saying you are wrong, but this is what greenbatteries.com say: >"Many battery manufacturers do not recommend long term ( months at a time) >trickle charging. If trickle charging is used then the charge rate should >be very low or only intermittent. The best smart chargers will only send >an occasional pulse charge to the battery once it is charged. They do not >apply a continuous low rate of charge." Received on 2002-12-10 Page template was last modified "Tue Sep 7 00:00:02 2021" The Rockbox Crew -- Privacy Policy |