Samsung Galaxy S21 Plus Battery Replacement!

If your Samsung Galaxy S21 Plus is running out of juice earlier in the day than you expect it to then the culprit might be the battery. Today we're going to run through the process of replacing the battery in your Galaxy S21 Plus.

We recommend grabbing our Pro Tech toolkit for this repair!

Be sure to follow the guide specific to your device!

Samsung Galaxy 21

Samsung Galaxy S21 Plus

Samsung Galaxy S21 Ultra

We have parts!

We have a video showing you how to reapply adhesive to your Samsung phone!

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[peppershade]

Remember that when you are in the EU you have 2 years of warranty, which includes replacing an old battery for free, make use of that before you try this yourself.

[ronlevin]

Samsung have one of the strongest adhesive under the battery in the phone market. I usually do not have a luck with IPA and suction cup, and I use a heat gun to soften the adhesive and them the pry tool to remove the battery. In many cases old adhesive still strong enough for a new battery as well.
So cool that all screws are same size and type.

[richardwhelner]

Thank you, sealed batteries are ridiculous. The same corporations who accuse us of not being "sustainable" try to make us buy a new phone every 2 years instead of re-using the same phone with a new battery..

[GunTech]

This is extremely involved for a battery swap, and it's a greatest problem with smartphones for all consumers. I saw that you've offered advice to joystick manufacturers how to get rid of drift. Do you have a similar video where you've solved this battery problem?

[dfmayes]

I just did this on my S10e. Not that satisfied. Getting the old adhesive off took forever. The adhesive thing they give you is thick so the case doesn't lay down flush like the original. I thought I was being careful but still managed to crack the cover. It's better than shelling out for a new phone, but don't expect miracles.

[kadduable]

My S21 ultra doesn't make some siquick sounds while am on a call. Do I need to replace the mouthpiece or loud speakers? Thanks for the great knowledge

[buixote]

Denatured (ethyl) alcohol works better than isopropyl.

[Pesar]

Is it a problem when you buy a brand new Samsung battery with a 2 year old manufacturing date/stamp on it?

[AdventureRich]

Do you retain the IP rating of the phone with this method?

[raven_willow__]

My phone been getting hot is that because of the phone battery?

[KKO]

Can you still remove the battery without the alcohol?

[lilolopez]

Getting the old battery out is a nightmare. I was able to get it out by using the kit utensils to pry up the battery pushing the edges. I also applied IPA but applying pressure while lifting was the key to get it out and move on with my life.

[waltschannel]

I replaced the battery, and phone restarted OK. I charged the phone 45% to 75 % then let it cool, then after 1/2 hour, finished charging to 100%. Next day, I checked it and the screen was black, but it would receive calls, which I could not answer. What do I replace next, the screen or main board?

[x__]

and the type of heat to open does not happen ???

[romanceidiot]

Can anyone advice on aftermarket battery replacement vs original Samsung service Center batteries quality?

[makedaevilmage]

Got the battery out with IPA ... although, after putting the phone back together and turning it on the screen went black ... and stayed black. I mean the phone still vibrates when I turn it on and plug it into the charger, but the screen stays black. I believe some IPA might have leaked into the fingerprint sensor area, shorted something ... and essentially broke my phone.

[Phone-Center]

I fixed many phones, the S21 has the worst battery adhesive. The frame cracks and bends before the glue gives up.

[Adri_BlackBeast]

Creo que os ha faltado desconectar y conectar la batería 7 veces más… 😆

[kcastillo]

Do you really have to use a magnetic mat all the screws are the same size

[Jefftaylor]

The suction cup is a terrible way of trying to remove this battery. The suction doesn't even stick. I used so much alcohol it's ridiculous.