El Tue, Nov 14, 2017 at 08:10:12PM +0200, Pičugins Arsenijs deia: > > I half remember most smartphone batteries include a charger chip > > and GTA04 batteries do not (the chip is in the phone and should be > > in the charger). >
> That is definitely not the case. 99.999% is that the "charger", that > is, the thing with a MicroUSB cable you plug into the wall socket, > only provides constant voltage and some guarantee about max current > available (say, 5V/2A). By "the charger" I meant the device Goldelico could build, not a USB power supply. > The phone has a charging chip inside, which takes 5V and uses it to > charge the battery, controlling the charging rate and stopping the > charging process when the battery is full. The battery itself > doesn't have any provisions for charging inside, aside from a > protection circuit that prevents it from overcharging (doesn't > have to be there, but is included in 99.999999% phones with LiIon > batteries), and a thermistor so that the charger can measure > temperature of the battery and stop charging when the battery is > too hot. Talking about protection circuit, it protects from 1) > discharging the battery too deep (because it will get damaged, and > in certain circumstances might burst into flames when charged the > next time), 2) overcharging the battery (even though the cha rger > is not supposed to do that, there's still a small chance, like > charger short-circuiting 5V onto its output because of a power > surge) and 3) short-circuiting the battery. Again, that is just > how phones are built, at least for a decade now. Ok. Sorry for my disinformation and thank you for explaining. _______________________________________________ Community mailing list Community@tinkerphones.org http://lists.goldelico.com/mailman/listinfo.cgi/community http://www.tinkerphones.org
