Intel iMac PRAM battery replacement

Can anyone point me at some instructions for replacing the PRAM battery in an early intel iMac please?

It is a coin battery, 3 V Lithium (922-6476), and requires opening the case to get to it. I cannot find a teardown photo sequence that shows how to replace it. Nor do I find the battery pointed out in any of the tears downs available at ifixit.com.
http://www.ifixit.com/Guide/Device/iMacIntel17%22
Dah•veed

Similar Messages

IMac pram battery holder broke

My pram battery holder broke when replacing batt on 2007 24" alum iMac . The black plastic tab on the right came off so now the battery won't stay seated. Is there an easy fix?

I was able to use a folded piece of business card to wedge the battery in place.

IMac PRAM battery

I have a slot-loading iMac G3-400 and I have been unable to find what type of PRAM battery it uses. I looked up the specs in the Apple support area but it just says 3.6 Volt Lithium. Any help will be appreciated.
Thanks,
-Joe

Here is a picture of the battery that you need.
http://eshop.macsales.com/item-specials/Newer%20Technology/BAA36VPRAM/
Here here is a form article on replacing a slot loader battery.
http://discussions.apple.com/thread.jspa?messageID=7871692&#7871692

Pram Battery replacement?

I have been searching the apple support pages for the correct procedure to replace the Pram battery. Everything is working well on my G4 so this procedure is preventative.
Can I swap the battery and start the computer up or do I have to press the pram button? Perhaps i have to hold down some magic combination of keys or at start up?
Thanks very much

Some references for you:
[Texas Mac Man's PRAM, battery, PMU tutorial|http://www.geocities.com/texas_macman/pram.html]
[PRAM reset directions|http://docs.info.apple.com/article.html?artnum=2238]
You don't need to reset the PRAM if swapping the battery, though if you leave the computer without a battery for longer than about 30 seconds (or is that minutes?), it will lose the PRAM memory and will be as if you had reset the PRAM.

PB 5300c Pram Battery Replacement

Several months ago I picked up a PowerBook 5300c in excellent, well taken care of condition. All works well with it but the pram battery is dead.
Having it replaced would cost me more than what I paid for it. I don’t have much experience with the inside of PowerBooks, except putting Ram in my Pismo.
Does anyone have experience replacing these on your own?
Is it a major undertaking?
Does anyone know of an internet site or source of information that may be able to help me if I decide to try this?
Thanks
greg

Greg,
You want the "PowerBook1905300.pdf" take-apart manual here:
http://www.whoopis.com/computer_repair/
You can save the file to your HD with a control-click on the name and selecting the appropriate command.
You might also enjoy reading the 5300 FAQ at this site:
http://www.alksoft.com/5300_stuff.html

Intel iMac 17 inch replacement lcd???

hello all,
i need a new lcd for my 2006 c2duo imac 17 inch, the lcd is a LM171w02-TL B2 but im have trouble finding one anywhere for a sensible price. Ebay maybe the last option!
Does anyone know if a compatible PC monitor lcd would fit? I know that lost of LG screens don't seem to work...
it seems it may need to be a LM171w01-TL B1 or B2...
thank you

hello,
disassembly of the imac is not an issue, i have worked with PCs and macs for years. Ive had the screen out already to get the model number and easily refitted it. its an easy procedure to be honest. As for an external screen, yes im using a 19 inch LCD at the moment via the DVi out but its not something i really wish to do for long.
Your correct about the cost, it seems some Apple resellers think that a 17 inch LCD is some how worth the same as a 24 Inch LCD!
I had hoped that someone could tell me of a compatible screen , HP and Comqac laptops use very similar LCDs and they cost a third on an Apple screen which is made by LG/Philips as is the HP, Compaq type.
the Apple part is a LM171w02 - TL-B1 / B2
the hp and others use LP171xx - TL-B1/B2 and variants of it..

Hard drive 6 gb/s and PRAM battery questions

I have two questions:
1) Does iMac Core Duo 20'' (early 2006 first intel model) support 6 gb/s hard drive (I recently bought a WESTERN DIGITAL Sata III 6 Gb / s buffer 64 Mb 7200 rpm)? when I will upgrade my hard drive it will recognize 6 gb/s speed data transfer? or it will recognize lesser?
2) Can I use any 3V Lithium CR2032 coin Battery as PRAM battery replacement on my iMac? I know that its 3V CR2032 from Mactracker or nay other sites from internet, but I would like to know if I can use a battery from any brand or shoul I get the exact same of the one apple use?
thanks!

1.5 Gb/s is the controller transfer speed for that model. SATA 3 at 6 Gb/s didn't arrive until after those computers were produced. SATA 2 can be jumpered down to 1.5 Gb/s (WD SATA 2 drives will use jumpers on pins 5&6), which you may or may not have to do, depending on the drive.
Not a guess. The WD drive you bought won't work.
You don't need the ridiculously overpriced Apple battery.
Specs here.
http://www.everymac.com/systems/apple/imac/stats/imac_cd_2.0_20.html

27" intel imac audio isn't working

I recently had my 27" intel imac logic board replaced.
But when i got it home i noticed that there was a start up sound but all other sounds were disabbled. Atleast they look disabled.
When i press the sound key(f12) there is a small icon indicating that there is no audio available. I thought that it might be some drivers they forgot to install, so i did a system update. still no sound.
My second guess is that they forgot to attach some sort of audio cable.
any advice would be much appreciated.

thanks for the reply.
unfortunetly under the Built-in Output, none of the mute boxes are checked.
the source is set to "digital out" which doesn't seem right, and there are no other options for source which also seems wrong.

Replace PRAM battery in in Intel core2 duo iMac?

I have just installed the iStat widget in my Intel Core2 Duo 2.16 Ghz iMac. I was a little surprised to see a battery level reading on it (of 45%). I wonder if it is measuring the remaining life of the PRAM battery. Remembering how badly my Powermac and my wife's G5 iMac behaved when their back-up batteries needed replacing, I want to avoid the same situation on my Intel iMac. However I can find nothing on Apple support for replacing the PRAM/back-up battery on an Intel iMac, so I am wondering if there is a replaceable battery or not. Anyone know?
Thanks
Wilson

From iSlayer Battery Section:
This section shows various information about your Mac’s battery. This section is only visible if you actually have a battery and won’t appear on desktops.
Percentage
The current battery charge as a percentage. This is also shown as a bar at the bottom of the section.
Time
Time left using the battery, time until charged, or “Charged” if the battery is fully charged.
Source
“AC” if the Mac is connected to mains power, or “Battery” if the battery is being used.
Status
This shows if the battery is charged, charging or draining.
Battery Health
This is a comparison between your current battery capacity and capacity of it when it was new. For example, if your battery lasted 5 hours when it was new, a figure of 50% suggests you should get 2.5 hours out of your battery now.
Cycles
The amount of battery “cycles” the battery has had. One cycle is defined as a complete discharge and charge of the battery, but partial discharge and charges also count. So, two half discharge and charges are the same as one complete discharge.
For some tips on how to get the most out of your laptop’s battery, please visit this Apple support page.
Message was edited by: lakewoodlawnman

How to replace an PRAM battery?? IMac g3 9.1 "Bondi Blue"

I think that my PRAM battery is dead. Can anyone give me instructions to replace it? I have a full working battery from an older computer lying around somewhere...

Hi, Ben -
Replacing the battery in early iMacs can be tricky. You would probably get a quicker directed response if you reposted this question in one of the hardware forums for the iMac G3 models. The most appropriate would probably be this one, the Using your iMac G3 (CRT) forum -
http://discussions.apple.com/forum.jspa?forumID=888
Not all computers use the same battery. This Apple KBase article cross references battery part numbers with models -
http://support.apple.com/kb/TA21569

PRAM battery for iMac 333MHz

I have be trying to upgrade a iMac 333 MHz from 8.6 to 9.2.2
I am up to 9.1 but need to connect to my dsl to do the 82MB download.
I have been moving the iMac around to different electrical outlets now the iMac will not start up.
The date and time each time went to 1956 so I am thinking it is the PRAM battery right?
Does anyone know the type of PRAM battery I need to replace? I do not have the manual or tech specs...
JTS

http://docs.info.apple.com/article.html?artnum=86181 Macintosh Family: Batteries and Part Numbers.
Radio Shack's battery# is 23-026. It is a 3.6V Lithium 850mAh1/2 "AA" battery made for Apple computers.
Mac 3.6 Volt Battery

How Necessary is PRAM battery on MacBook Pro (c2d intel 2.13, model a1211)

Hello Everyone, I stupidly broke the socket/clip where the pram battery attaches to the logic board on my Macbook Pro (c2d Intel 2.13). Unfortunately, since the socket/clip is a surface mount component and the way it broke (I don't see solder pads) I'm unable to re-solder the clip back on to the motherboard. Here's a picture of what I'm talking about (borrowed from someone else who apparently did the same thing): http://yfrog.com/6ximg0870nj
My first question is if anyone knows how vital the pram battery is to a Intel Macbook? It seems that the laptop works fine without the pram battery. Is the battery only necessary to retain pram settings if the main laptop battery is removed and the power adapter disconnected?
Second question is whether there is any alternative to repair the logic board other than get an entirely new board? The laptop is recently out of warranty (Applecare expired earlier this year) and I don't believe that Apple would have covered this since I caused the damage myself.
Third question(s) is whether it would cause any problems to use the logic board out of a c2d 2.33 a1211 macbook pro (I can get my hands on one for a pretty reasonable price)? The only difference I can see between the two boards is the clock speed of the main processor and the amount of video ram. Would there be any advantage to using this logic board? Doesn't seem like the speed bump and video ram would do to much.
Thanks in advance for any comments/help you can offer.

Much obliged. So it sounds like the only time this will be an issue is if I disconnect the regular battery and the power supply at the same time. The rational thing to do here is to just live with it rather than blowing hundreds on the new logic board and risking additional damage during replacement.
I just wish I wasn't so OCD about this. Bothers me a bit to know that something is wrong with the laptop even if it doesn't manifest itself on a day to day basis.

Directions for changing pram battery on imac DV

Hi,
A friend of mine has an imac 400 DV slot loader with a dead pram battery. I look after this computer for them but have never changed the battery on one of these. Can anyone give me directions and/or photos? I've had a look through older questions but the links all seem to be out of date.
Thanks,
James

This Macworld article has photos that illustrate removal of the bottom housing and EMI shield, to access the motherboard for upgrades. Some experienced users have been able to replace the battery, by accessing it through the memory door on the bottom. This involves the risk of letting it slip out of your fingers and then having to maneuver/tilt the iMac about, to remove the loose battery. Prior to removal, you should note the battery's orientation as to polarity (marked on the motherboard).

How do you change the pram battery on a slot loading iMac?

I'm hopeful that a new pram battery will solve the problems I've been having with my iMac. I just have to put it in, and judging by the correspondence I've seen on this subject, that's not an easy job. (One letter spoke of having to remove 16 screws) Does anyone know of a site that gives instructions complete with illustrations for changing the battery? It seems silly to have to take my set to a repair shop to change the battery, but I don't feel up to removing 16 screws without very clear instructions.

Hello,
So far, so good. My computer started after I changed
the battery, however, I can't be sure until tomorrow
morning because my set was still warm when I started
it. Tomorrow is the acid test. I'll let you, and
everyone else who has tried to help me, then.
Glad to hear that you survived, and that it seems to be working
Let us know what you find tomorrow.
A few comments: Whatever happens, this experience
will give me more courage for the future. I now know
that I can open my computer without breaking
anything--anything important, that is.
That's always a good thing
Possible problem: After putting in the new battery, I
noticed a loose black wire with a metal tip right
next to the battery.
Interesting...
The only thing I could think of that might look like that might be the Airport antenna.
But, it could be something else. Without pictures, it would be hard to really guess at it.
I hadn't noticed it before, so I
don't know if I might have accidentally unplugged it
from where it should be. Anyway, just to be sure, I
wrapped the metal tip with scotch tape to insulate it
in case it comes in contact with a metal part.
Was it attached to the logic board (the main circuit board which your battery was on)? Or, was it coming from somewhere inside the computer's case?
Any idea or description of where it's other end was attached?
I hate to tell you this now, but electrical tape would have been a better choice for insulating it. It's still possible for electrical current to pass through scotch-tape.
A small, white polyethene? part fell out during my
activities. I can only hope that it's not essential.
Without a description, it's hard to say what that might have been.
Does it look like a bracket? If so, it may have gone around one of the connectors around the CD-ROM drive connectors, or one of the other cables you disconnected.
Otherwise, if it doesn't appear to have a function, it might just be a piece of broken plastic.
If it's flat and rectangular, it could also be a cap that goes over the battery. But, those are usually black with a couple of tabs to hold it in-place.
Also, it looks like two small,flat, grayish tabs got
snapped off the bottom panel when I removed it.
That happens sometimes. I was fortunate with my system. I've opened it many times without breaking anything (yet).
I didn't find the job to be easy, but maybe that's
because I was stresed out during the whole operation.
Yes, that doesn't help.
Fear was the problem. I was afraid that I might touch
the wrong part, I was afraid that I might drop a
screw ito the computer, I was afraid that I was going
to break the bottom panel in the process of removing
it, etc. The most difficult step was replacing the
heat shield. For a while, I thought that I would have
to give up and just attach it as best I could.
Glad to hear it all went back together.
Hopefully the extra parts and cable were not important. I would feel better figuring out what they were if it were my machine. But, it's up to you if you want to delve back in there and try and figure it out.
Well, that's a summary of Niku's excellent adventure
in the computer repair world. Tomorrow I'll know if I
was successful. Wish me luck.
Thank you for the update. I hope all goes well and continues working for you.
Be sure to tell us what you find out in the morning.
Let us know if you have other questions.
P.S., if you'd like, go ahead and click the "Helpful" or "Solved" buttons on any of the posts / replies above if you feel they were helpful or adequately answered your question.

Replacing pram battery

I will be opening up my iMac (G3 400 early 2001) soon to install a new hard drive. I realized this would be a good time to change the pram battery which is original, but still good.
If I do the replacement quickly enough will all the settings be saved? If not, what is involved to restore them? Is resetting the pram necessary? What, in general, should I know about doing this?
Also, since this will, at the same time, involve replacing the HD for upgrade- I will be cloning bootable external to new HD (with partition just below 128GB- how will the battery change complicate, if at all, this procedure? If settings are lost should I restore them when booted first from the external before cloning and partitioning? Thanks for any help on this.

You are stressing too much about this. Just replace the battery. After you get everything reassembled you will want to reset the PRAM and then set the clock.
It has nothing to do with the hard drive.

Intel iMac PRAM battery replacement

Similar Messages

Maybe you are looking for