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Resolved What are the specs of this iBook charger?

poiihy

poiihy

macrumors 68020
Original poster
Aug 22, 2014
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I have a charger for the Radeongate iBook in pieces. I want to find the specs but the print on it that has that info is all rubbed off and I can't read it.

Here is some info that I can read. This is the info on the side with the plug.

Apple Portable Power Adapter
Designed by Apple in California
Assembled in China Model Number: M8482
AC Input: 1.2A PSCV450120A QAS TE4906

It looks like the print on the two halves of the plastic enclosure is different. The print on the top half is grey and seems to be embedded in the plastic and very permanent. The print on the bottom half is brownish grey and seems to be on top of the plastic and can rub off. A lot of this print has been rubbed off but none of the top half has been rubbed off.

This charger is/was for a 700MHz iBook G3.


I want to know the voltage and max amps of the output.
 
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The 65W version is 24.5V @ 2.65A oddly enough. That 0.5V matters.

My 700MHz iBook came with a charger with a silver coloured jack. All my AluBooks came with plain white chargers. Go figure.
 
24 volts you say? :D It would be great to power my 24v fan!

Are you sure it's 65 watts? I looked up the model number and found a lot of stuff about 45 watts, and this was for a rather low-power iBook G3.
 
poiihy said:
24 volts you say? :D It would be great to power my 24v fan!

Are you sure it's 65 watts? I looked up the model number and found a lot of stuff about 45 watts, and this was for a rather low-power iBook G3.
Click to expand...

I was giving you the specs for your charger which is 45W I Never said it was 65W I was Just mentioning the fact i used a 65W one to power a cinema display...
 
bunnspecial said:
As far as I know, 12"=45W and 14"=65W. I know I've had issues charging my 14" G3 with a 45W charger.
Click to expand...

I think this iBook is/was a 14" because there is some space between the keyboard and the edge. So this must be a 65 watt charger :D Which means this is 2.7 Amps :D awesome.

Being that the used iBook chargers are rather cheap and good quality, I am going to keep it :D But if/when I cut the plug/cord off then I could sell that cord so someone can make their own charger.

Now, this charger just outputs a smooth 24 volts? No fancy charging mechanics, right? The charging mechanics should be in the iBook circuitry.


Also, why do iBook chargers output 24 volts but the MacBook Pro chargers output 16.5-18.5 (and the newer ones output 20)? I would think MacBook Pros would run at a higher voltage...
 
bunnspecial said:
I've never scoped one, but a few minutes with a scope would tell you that much.

I'm pretty sure there are at least 4 contacts on these-three in the center and the outer shroud.
Click to expand...

The outer shroud just controls the light... I don't think it has any wires going to the brick. If you touch the shroud or touch it to something that is grounded, it will glow green.

I'd have to cut the wire or open the brick to see how many wires are coming out, but I think it would be two.
 
yes the brick is just a 24V SMP nothing fancy i have even charged my ibook g4 using a ibook g4 charger cable and the 24V line from my MDDs PSU :p
 
Great, so I have a 24v power supply :D

Although the only thing it would be good for is my 24v fan which uses 500mA. This wouldn't be good for LED strips because LED strips are 12v and 5 meters use about 2 amps and 2 amps through a 7812 voltage regulator would be very inefficient :p and the power supply wouldn't be enough. It would be good for some 24v led strip though :D I'll probably find a need for it some time
 
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