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[Update: Infographic] Samsung confirms: bad batteries brought about the end of the Galaxy Note 7

Since the very first investigation behind the heating/burning issues in the Galaxy Note 7, Samsung had put the blame on faulty batteries, and the company has now confirmed that the batteries were indeed the reason behind one of the biggest recalls in the smartphone industry. Samsung announced the results at its press conference today, after testing more 2,00,000 Note 7’s and 30,000 batteries.

The original battery – Battery A as Samsung is calling it – was faulty in the way everyone had expected: the component that is supposed to keep the positive and negative electrodes inside the battery from touching each other wasn’t doing its job. Also a contributing factor was an incorrect placement of the negative electrode’s tip, which Samsung says increased the chances of the battery burning up. The “fixed” battery (Battery B) was found to have problematic welding, which was allowing the positive and negative electrodes to come in contact; some of the new batteries also had the insulation tape missing, allowing the excessive heat to travel around the battery and cause failure.

There is a lot of technical jargon, but the basic gist is that the Korean giant messed up with both the original Note 7 battery and the one that was supposed to fix everything. Samsung says that it has found no faults in the design or manufacturing process in other aspects of the device, and it will be implementing a more thorough 8-point testing system for its batteries to prevent issues in the future.

Independent organizations also had their own investigations for the Note 7 battery and are sharing their results at the press conference. Go ahead and see for yourself in the video embedded below, and tells us what you think about Samsung finally coming clean on what caused one of its best smartphones to go out of circulation.

note-7-8-point-battery-safety-check

Update: Check out the second video at the bottom of the post, which has Samsung giving a shorter, more condensed version of what went wrong and how it intends to prevent further issues.

Update 2: Samsung’s live press conference has been taken off YouTube for now, but the company should be publishing the full conference shortly. We’ll add the video here once it goes live on YouTube.

Update 3: Samsung has now published an infographic detailing the abnormalities of the batteries inside the Galaxy Note 7. It has also published the findings of the three independent organizations that investigated the device, which you can grab at the bottom of this post.

Galaxy-Note7-What-We-Discovered-Infographic_Main_1

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Joe Mitri
Joe Mitri

I think it’s a compromise between Changeable batteries and Water proof…
I would pick changeable battery any day… We lived all our life with mobiles that supposed to stay out of water ! for those who wanna dip their phone in the water, should buy a special cover for it !
I wonder how much design is getting affected by battery change design ? Cause I have to admit, since they moved to full body, and their designs really rocks !

Hoggington
Hoggington

I sure hope they did the same amount of testing with 3rd party charging cables and variations of such.

viktoras.hellas@gmail.com

Missing insulation tape….??!
It’s like selling a car and forget to install seat bells…
That’s not acceptable from a leader company like Samsung….

kambod
kambod

Wouldn’t it be better if Samsung used “Removable Batteries”?

keithsanantonio
keithsanantonio

I hope then make the return of Note 7 with this findings. The design of Note 7 is great.

simchester
simchester

Samsung should have had these quality checks long ago b4 the Note 7 fiasco…

Even the Galaxy S7 series has quality issues…ppl reporting water damage after immersing the phone in water for 2 mins…the phone dies…check YouTube…lots of ppl are crying…

& Samsung says”water resistance for upto 30 mins in 1,5m deep in water”…lies,lies and more lies.

F*ck Samsung…this company deceives ppl

a1awan
a1awan

And still you are here on a purely Samsung dedicated site?

maccyb
maccyb

As someone with many years experience of lithium battery manufacturing for Motorola, these explanations are perfectly sound. They did a good job explaining exactly what happened. I’ve seen both scenarios myself. Well done Samsung.

Note5IsBoss
Note5IsBoss

It’s nothing to be shocked about truthfully when you churn out as many handsets as Samsung does yearly it’s bound to happen where some are bad.

First time for everything I’d rather it be to Samsung’s Note line instead of it’s Galaxy S line mission accomplished issue fixed.

Least they was forthright took the billions of dollars hit that came with it and moved forward unlike Apple and it’s iPhone 7 and 7plus battery problems.

Samsung is the only Android manufacturer who can take billions of dollars for a hit financially and still be standing tall and strong.

#NothingBeatsSamsung

obsydian
obsydian

What a load of BS, the first battery A explanation sounds like a school boy error and the battery B i don’t believe.

o0MHJ0o
o0MHJ0o

I was thinking the same thing, this whole time it doesn’t make sense for them to get the battery wrong, TWICE. Like I said back when this thing first started, I am not one for conspiracy theories but this seemed a lot more like sabotage than anything else.

maccyb
maccyb

The explanations are reasonable. Take it from someone who manufactured lithium batteries for Motorola for many years. What knowledge do you have of battery manufacturing?

SenorSjon
SenorSjon

Everything fits in CAD. 😉 Real life can be harsh sometimes.

breathlesstao
breathlesstao

While the thorough investigation and the release of findings is commendable… I can’t help but wonder how on earth they produced millions of units of this device without being aware of these issues? That in itself is more “incredible” than anything in the documents or videos on here.

Hahnski
Hahnski

I’m more fascinated by the testing lab that was featured in the video than the actual result of the tests!

If anyone from Samsung is reading these comments, please create more content that shows us your labs and R&D departments.

…and I agree with the previous comments – this fiasco could have been less of a problem if the units had user-replaceable batteries.

SAMgalaxyXXX
SAMgalaxyXXX

Hmmmm not entirely convinced yet but if so I hope Samsung reconsiders its plan of dumping millions of already built Note 7 which is already an environmental concern instead of just redesign the battery and put it back in the market again in Q1 with a lower price. They can then re-release an updated version in October or November like Oneplus did with the 3T.

cyberfrost
cyberfrost

I think Samsung handled the whole Note 7 saga very transparently. And the final act was also very transparent. Very commendable effort that! I hope Sammy learns from the fiasco and pays enough attention to quality checks. They need not rush their products to beat something else. I am sure S8 will be an awesome device and will make up for all the bad publicity Note 7 gathered because of the faulty batteries.

ASH8
ASH8

YES as STARKNIGHT says below, IF the stupidity of Phone makers NOT producing a product that can have an EASY REMOVABLE Battery has come home to bite Samsung in the backside badly, just a lazy $1 Billion+ USD which all of us will pay for with new phone purchases. IT is IDIOTIC to produce a phone WITHOUT a Removable main battery, these are PC’s after all, how would Sony or Dell go with selling flagship PC’s without removable or replaceable batteries?. Lift your GAME SAMSUNG, DO something that sets you apart from others. And for those who say ‘technically’ having… Read more »

svkhris
svkhris

This is your opinion and you shouldn’t be saying “Do you really think ANY new phone buyer cares ..”. You don’t know what everyone is thinking, do you? Samsung has various channels (surveys, consumer reports etc.) to get info about what users expect on an aggregation and also conscious business decisions play a part. It’s not that they can’t do it, just that it was a decision taken as part of engineering, user surveys and business. Also you’re comparing laptops with smartphones. Recent high end laptops/tablets (2 in 1s) also have non removable batteries. You know DELL and other companies… Read more »

ASH8
ASH8

Of course it is “my opinion” we all have them including you!… And you seriously do not think IF Samsung had a replaceable battery (that worked and was not faulty like the 1st ‘recall you refer to’ were) that the total inconvenience to S7 Note owners would not exist, the reputation of the brand and the cost now said to be $5 Bil (not $1 Bil) would not be trashed, that a new updated separate Battery would not have been the best outcome according to you, really. If there was a replaceable battery S7 Note owners would still have their… Read more »

svkhris
svkhris

In that case you shouldn’t mention “ANY new phone buyer” because literally you were talking about everyone when it was your opinion 🙂 Ok consider that there was replaceable battery in Note 7. Samsung found Note 7 was exploding and decided to replace the battery. So users will walk into a store or receive new battery through some means and ship old one back to Samsung. Now the replaced battery also explodes then Samsung would replace that one as well. How long and how many cycles? So I’m pointing to the logic that having replaceable batteries wouldn’t avoid the Note… Read more »

ASH8
ASH8

HUH, if Samsung eventually made a replaceable Battery that did not explode it would be the perfect solution and Note 7 owners would still have their phones in perfect working order. “Even the non-replaceable Batteries last longer”, you can not be serious. 1. The Battery was the cause, we all knew that. 2. A replaceable could have been made at much cheaper cost, they can do it for S2,S3,S4,S5, Note series, Blah, Blah, without exploding. 3. Buyers are not going to buy a phone because it is 1 mm thicker, again you cant be serious. 4. Your S6 is not… Read more »

warlockba
warlockba

Oh man, straight from the heart … been preaching this since Note 5 / S 6 … Meanwhile sticking to my Note 4, and advising family and friends to not go the Samsung way of today anymore … they are as stuck-up and high-priced as Apple, in a market (Android) – which unfortunately has plenty of alternatives for every taste (and in the meantime even more viable, and cheaper, and robuster), than the “dark side” 🙂 I doubt they can afford this position, but only time will tell. And what is even more baffling is, that people are ready to… Read more »

alozide
alozide

Well said WARLOCKBA, I couldn’t have said it any better, my thoughts exactly. People need to wake up!

preime101
preime101

reasons for a replaceable back & battery combo that Samsung used to have:
1. Ability to swap batteries out for a quick charge (Fast charging has made this largely redundant)
2. Ability to swap batteries once they have reached their EOL or are defective
3. Ability to install larger capacity batteries (Some cases offer this as a built-in secondary battery but that increases the size quite a bit more)
4. Ability to customise the back, replace when damaged or add a different case design like the wallet case on the Note 4 etc

StarKnight
StarKnight

The funny side of this hilarious story is that allowing users to replace batteries with non-faulty ones (maybe from other produces) like the old, good, Samsung mobiles would have solved the problem without having to shut the whole product down 😀

aditya7755
aditya7755

I hope they do better in upcoming flagships. More testing and less loss.