When Samsung Electronics released Galaxy Note 7 in 20016, the phone received a lot of positive reviews from technology enthusiasts. But the Phone had a battery defect which led to massive losses by the company
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Case Study: Why Glaxy Note 7 Had Battery Defects?
1. Galaxy note and their battery
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2. Introduction
The Samsung Galaxy Note 7 was unveiled by Samsung
Electronics in 2006
It was the first phone by Samsung Electronics that had a
symmetrical connector.
It was also the last phone that had a home button in the
Galaxy Note Series
Note 7’s pre-order record was the highest in South Korea
It received a lot of positive reviews from technology
enthusiasts because of its flawless interface
3. The Problem
Battery defects caused the devices to overheat and
explode or combust
Defect 1: The batteries had a design flaw especially with
the upper right corner which led to short circuit
Defect 2: Replacement batteries had a manufacturing
issue as a result of welding defect from the
manufacturing process
4. The Root Problem
Defect 1
Main cause: The negative electrode of the phones device was
deflected in the upper-right corner
More cause: The battery’s negative electrode had its tip
incorrectly located in the curve as compared to it being on the
planar area
Defect 2
Main cause: The positive electrode had high welding burrs which
led to the penetration of separator and insulation tap thus
causing direct contact between the negative electrode and the
positive tab
More cause: Most batteries were missing the insulation tape
5. Manufacturing Process
Samsung Electronics’ batteries are produced by its
subsidiary Samsung SDI
A short circuit in a battery may result when the
separator has been damaged since it results to
negative and positive electrodes meeting with the
jellyroll
6. The Aftermath
Samsung Electronics' operating profits went down by 33%
as compared to the previous quarter in 2016.
It lost at least $17 billion in revenues from the recall of
the phones
Galaxy Note 7 is considered as the device having the
shortest life span of all Samsung smartphones.
Samsung released Galaxy Note Fan Edition in 2017 which
is the refurbished version of Galaxy Note 7.
7. Conclusion
The results from the Samsung's study showed that
manufacturing issues were to blame for the Note 7
battery explosion incidents
After realizing the problem with the battery, the company
informally recalled the devices.
The recall impacted the Samsung’s business including the
perception of the customers