It has been over a month in the saga of the Samsung Galaxy Note 7 recall. Events associated with the Note 7 have taken a lot of different twists and turns since the beginning of September. The first recall failed to address the issue as the replacements exploded too.
This led to Samsung telling the Galaxy Note 7 owners to stop using the devices and return them. The company then permanently discontinued the sale and production of the device. Here are some of the theories that might have caused to the defection of the Note 7.
New manufacturing issues
Samsung has not explained what went wrong with the Note 7’s battery in both the original devices and replacement. According to Consumer Product Safety Commission (CPSC) which worked with the company during the US recall said that the batteries made by the Samsung SDI were faulty. The batteries were said to be have been a little large for the space available in the Note 7. Installing them tends to crimp at the corner leading to a short circuit, overheating and then causing fire.
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Sammy removed the SDI batteries from its Note 7 devices after the first recall and then turned to the China’s Amperex Technology. However, according to Bloomberg reports, even the Amperex batteries caused the same problem as those with SDI batteries. The investigators of the Note 7 series said incidents believe a flaw different from the one which caused the first recall is to blame.
Lack of enough space
In addition to the manufacturing problem, a report by Korea’s Agency for Technology and Standards stated that Samsung might have made a device manufacturing error which exerted pressure on the plates contained within battery cells
The tension placed on the device’s battery affected the sub-optimized assembly might have led to the positive and negative poles coming into contacts with each other causing in battery breakdown or fires. The limited space in the chassis may have cracked or bent the inside of your phone’s batteries.
The SDI batteries were a way too large for the device. Perhaps Samsung should have considered abandoning the 3.5mm jack to add a few extra millimeters.
The Galaxy Note 7 is also linked to the fast charging technology by Samsung. The issues with the device may have occurred from the adjustments made to the device’s processor so as to speed up battery charging times.
The use of a MAXIM power IC, alongside the DA9155 charging chip, could have caused the problem. The chip is a slave charger which extends the capabilities of the master power IC for more increased charging currents. It is controlled by the AP (Application processor) and it starts during a high-power current charging state.
It is possible that the developers used the chip to push the device’s fast charging capabilities to battery’s limits making it explode.
It can take a few weeks or months before Samsung comprehend the full causes behind the Note 7 fires. Let us wait till Samsung officially reveals the defect which toppled the Galaxy Note 7.
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