Jeff,
Thank you very much. I have learnt more & know how to do if replace
the battery next time ^^
Thanks!
--
Michael
Palm, Linux, Olympus, Mac user
2006/12/22, Jeff Keller <jeffreyrkeller@xxxxxxxxx>:
>
> Just measuring the voltage will probably tell you if the connections are good.
>
> If you try to measure ohms or "continuity" across a voltage source
> such as a battery, the voltage source will force current, quite likely
> too much current, to flow through your meter. I noticed in one of your
> pictures your meter was set to a 1 ohm range. Perhaps you only
> measured the voltage and not the "ohms".
>
> If you want to test how good your connections are you could try to
> find a resistor to use as a load. In this case you have 175mah
> batteries with about 15v. So you would want a resistance of about 15v
> / 0.175a = 86 ohms (or maybe less) but it must handle nearly 3 watts.
> The motor drive probably takes a higher short burst current than this,
> but as a very "approximate" test, just discharging the battery at a
> current rating equal to its amp hour number would show a voltage drop
> if the connections weren't good enough. In this case just operating
> the motor drive would be a better test.
>
> If all you did was measure voltage, your meter is as good as anything
> you could use.
>
> -jeff
>
>
> On 12/21/06, Michael Wong <mialop@xxxxxxxxxxxx> wrote:
> >
> > Thanks, Jeff. What equipment should I use to measure?
> >
> > --
> > Michael
> >
> > Palm, Linux, Olympus, Mac user
> >
> >
> > 2006/12/21, Jeff Keller <jeffreyrkeller@xxxxxxxxx>:
> > >
> > > That looks like a nice "do it yourself" job. Thanks for posting all of
> > > the pictures.
> > >
> > > I would like to caution you though. It isn't a good idea to use an ohm
> > > meter to check continuity of a battery pack. If you measure a voltage,
> > > you have them connected together. You are very likely to damage your
> > > meter if you try to measure the "ohms" of the battery pack.
> > >
> > > -jeff
> > >
> > > On 12/21/06, Michael Wong <mialop@xxxxxxxxxxxx> wrote:
> > > >
> > > > I have 2 set Control Packs. One was purchased from eBay, around after
> > > > half year, the battery was collapse. And then I purchased another set
> > > > from a Hong Kong user. I asked Hong Kong dealer --- Kingstone to
> > > > replace the battery. Unfortunately, Kingstone ordered 2 set battery
> > > > from Japan but both were linkage. I'm not electrical guy, thus I left
> > > > the control pack into my drawer for half year.
> > > >
> > > > Recently, I put my heart to replace the battery. I asked my friend to
> > > > teach me how to repair (he had experience to replace control pack), I
> > > > was going to make my first time to repair something I didn't know
> > > > .................
> > > >
> > > > First, I bought 2 set new battery as NiMH since I couldn't buy NiCD
> > > > battery in the market.
> > > > http://palmboy.palmcyber.net/gallery/albums/album13/PA201939.sized.jpg
> > > >
> > > > I broken the "box" & take the "battery" out.
> > > > http://palmboy.palmcyber.net/gallery/albums/album13/PA201940.sized.jpg
> > > >
> > > > The individual battery is 1.2V/pc, I need 12 pcs for 14.4V, so I had
> > > > to combine 2 set battery as 7+5.
> > > > http://palmboy.palmcyber.net/gallery/albums/album13/PA201942.sized.jpg
> > > >
> > > > Upon combined 7+5 pcs, test it was "continuous" by tester.
> > > > http://palmboy.palmcyber.net/gallery/albums/album13/PC051943.sized.jpg
> > > >
> > > > Successful! The battery was "continuous".
> > > > http://palmboy.palmcyber.net/gallery/albums/album13/PC051944.sized.jpg
> > > >
> > > > Test the voltage of "battery" as 14.xV, nearly 15V.
> > > > http://palmboy.palmcyber.net/gallery/albums/album13/PC051945.sized.jpg
> > > >
> > > > I had to pack the whole battery by plastic tape due to the compartment
> > > > is metal, it'll be short if no packed.
> > > > http://palmboy.palmcyber.net/gallery/albums/album13/PC051946.sized.jpg
> > > >
> > > > The size is fit into the compartment.
> > > > http://palmboy.palmcyber.net/gallery/albums/album13/PC051948.sized.jpg
> > > >
> > > > I put wires at both "positive" & "negative" sides for connections.
> > > > http://palmboy.palmcyber.net/gallery/albums/album13/PC051949.sized.jpg
> > > >
> > > > Successed to solder positive & negative points.
> > > > http://palmboy.palmcyber.net/gallery/albums/album13/PC051951.sized.jpg
> > > >
> > > > There was many free space, I put some material to make compartment
> > > > "full".
> > > > http://palmboy.palmcyber.net/gallery/albums/album13/PC051952.sized.jpg
> > > >
> > > > Upon the test, the control pack is working ^^
> > > >
> > > > --
> > > > Michael
> > > >
> > > > Palm, Linux, Olympus, Mac user
> > > >
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