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=20
If you take a photo of the Chinese label on the battery, I may read it fo=
r you :)

> Date: Sun, 23 Mar 2008 04:13:11 +0100> From: rikard.bosnjakovic@gmail.c=
om> To: piclist@mit.edu> Subject: [EE] Designing a battery charger> > My =
father-in-law has aquired an electrical bike of some kind. It's> battery =
driven and runs on three 12V batteries (in series, thus using> 36V). He n=
ever got a batterycharger and there seems to exist none for> this particu=
lar model, so he asked me if I could peek around and build> a solution.> =
> I found this problem interesting, so I accepted it. Yet I have not> rea=
d up to anything so I'm just out for guessings (it's 04:06 in the> mornin=
g, so bear with me) before I sober up and dig down to the gory> details o=
f battery charging tomorrow.> > What I've grasped so far is this, that I =
need to output 36V> (preferably some volt higher) to the batteries to be =
charged. But what> about charging currents? Must it be supplied at a rate=
 defined by the> batteries, or can I supply whatever current I want to (g=
iven that> lower currents =3D=3D longer charg
 ing time)?> > The batteries are chinese and contains no labeling whatsoe=
ver, so I> have no clue about them more that they are all 12V in series a=
nd they> go through a 25Amp fuse. They were pretty heavy, so I would gues=
s some> lead kind of batteries.> > More guessings: For a full bridge rect=
ifier giving the correct> voltage, is a ripple capacitor(?) required? Tha=
t is, do batteries> require a steady current or will a pulsing voltage do=
?> > Now I will stop guessing and go sobering up, had a bit too much of t=
he> scottish grouse-bottle while at my father-in-law's...> > > -- > - Rik=
ard - http://bos.hack.org/cv/> -- > http://www.piclist.com PIC/SX FAQ & l=
ist archive> View/change your membership options at> http://mailman.mit.e=
du/mailman/listinfo/piclist
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