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Fifth generation of iPhone. Repair of this device is straightforward, and requires screwdrivers, prying tools, and patience. GSM/CDMA / 16, 32, or 64 GB / Black or White.

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iPhone 4s Battery Connector replacement

Ok so I left a post about my Iphone not charging or powering up, just heating up. I have replaced ALL components, but i think there might be an issue with the battery connector, which makes sense because it affects the power and its the only component I have not replaced. I just want to know if there is a guide on replacing the battery connector? I just want to know whether I should use heat gun or soldering iron.

I'm very skeptical of using a soldering iron because of how the placement is. The soldering pads are under the battery connector and i do not want to risk burning the motherboard. For removal I would probably use soldering iron, but for placement heat gun and paste.

I would like a veteran, someone who has done this many a time and is very experienced to advise me on this, as i have done many Iphone repairs but never repair of a battery connector. would appreciate any suggestions.

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Ok, so no soldering gun at all... way too small... just heat gun...


Im surprised no one else has had anything to say, I did try my best to explain. I hope everything goes well with your repair. :)


use conductive glue!!


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Ive done several connector replacements to date and they have all gone very smoothly using a soldering pen. But i wouldn't say you have to replace the connector altogether, if you think your connector is faulty for whatever reason try rejoining the posts to the pads first, this will establish whether your solder joints are bad or if for whatever reason your connector is "faulty" in another way.

But if your still looking at completely replacing the connector....

As long as you have a fine tip soldering pen and possibly a hot knife tip you should be able to get the connector free. You'll also need flux, extra solder, qtips and isopropyl alcohol. The only part of the removal process that will be kinda unconventional will be getting the two mounting points at the back of the connector free. The two mounts will require to you remove the plastic around them,I melted the plastic, then you can unsolder them. These points are structural to the connector and do not provide a connection from the battery to the board. The four pads on the other hand need to be dealt with in a very careful manner. Ive used very thin solder braid to pick up the solder around the base of the pads. Then with the pen I applied heat to each pad and "wiggled" it free. Keep in mind that there are several very small resistors near the pads, DO NOT damage these!

After you free the connector from the board do some house keeping, prep the pads with fresh solder, clean off the board with alcohol and make sure the surface will let the new connector sit properly. If you can manage all that, getting a new connector back in will be easy. To make sure the connector is going to stay put, use a dab of supper glue on the bottom of the connector and place it on the board lining the posts up with the pads. After the glue dries simply resolder the pads to the posts on the battery.

I cant give you much info on how to use a reflow gun with this because ive never used one to replace this particular part. But if I was going to do it off the top of my head I recommend making a heat shield that will cover everything but the connector. Tinfoil works best in this case since you will have to cover corners and bends. Make sure you add flux to the area youll be applying heat to. As far as the temperature, I would use about 700 degrees ferinheight. And remember your not going to hold the nozzle directly on that area for very long, 1-2 seconds at a time, keep that heat rotating so you dont burn your board!

Unfortunately i cannot really explain the finer points of soldering, it really is an acquired skill working with liquid metal.

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trust me im very great at soldering, i just have to buy the point tip iron because mine from radio shack are completely worn out from college days and for some reason i cant even find the knife tip for them... i have everything else but the heat gun... i have my eyes on this heat gun from milwaukee, not sure of the model but i know its black and red lol

im gong to accept this answer i dont think it can get more descriptive than this... this is definitely going to use this as my guide i prefer to read than watch the videos for some reason... i will update if i have any questions... thanks so much for this...


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i, like many others, ripped off the battery connector by being to rough disconnecting the battery. i cleaned up the surrounding area with isopropyl alcohol and was worried about how to re-solder, with heatgun, or iron, without melting the plastic on top. so i decided to go for conductive glue u can get off ebay. worked a treat. just dab it on connectors with a toothpick or similar small item and u have about 30 seconds to line it up, then let it set.

i just love this new conductive glue for small parts as i also used it to fit a new little blue inductor near the battery connector.

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Very interesting in this solution. Exact problem here with iPhone 4S connector. Left off when I tried to unplug battery. It seems a clean unweld (if I push connector the iPhone works so welding looks hard to get for a newbie and I'd like more details using super conductive glue (recommendations eBay item) and way to apply

I'm thinking if I could left battery connected with screws mounted so I fix correct position easily. Could be interesting put some glue in plastic base of connector?


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gtcoodyscoops will be eternally grateful.
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