Anybody think the switch to USB-C charging port could be the cause of the battery problem?

[ThrottleJohnny]

I would love to know the usage habits of those who's phones ignited versus those that didn't.

 

[Almeuit]

No. Otherwise Nexus 6Ps, 5x, HTC, etc. would be having the same explosion issue.

 

[skatergirl]

My husband's Z Force is USB-C as well. No issues for him.

 

[ThrottleJohnny]

No. Otherwise Nexus 6Ps, 5x, HTC, etc. would be having the same explosion issue.

Not necessarily. This still could be an issue related specifically to Samsung's manufacturing process.

After all, everyone else uses lithium batteries too, and yet...

 

[Almeuit]

Not necessarily. This still could be an issue related specifically to Samsung's manufacturing process.

After all, everyone else uses lithium batteries too, and yet...

Then it would be an issue with Samsung and their implementation of USB-C.

I thought the OP was asking about it just being USB-C in general and that is why I wrote that answer. .

 

[ThrottleJohnny]

Then it would be an issue with Samsung and their implementation of USB-C.

I thought the OP was asking about it just being USB-C in general and that is why I wrote that answer. .

Ah, gotcha

 

[Ry]

Battery voltage?

 

[Longhorngary]

Then it would be an issue with Samsung and their implementation of USB-C.

I thought the OP was asking about it just being USB-C in general and that is why I wrote that answer. .

This was exactly my point, Samsung in moving towards USB-C had to implement a new charging system. In doing so, they obviously had errors along the way either in design, build and new battery charging software.

 

[ThrottleJohnny]

This was exactly my point, Samsung in moving towards USB-C had to implement a new charging system. In doing so, they obviously had errors along the way either in design, build and new battery charging software.

It's an interesting theory if nothing else. That would also explain why simply going with another battery didn't fix the problem. The problem wasn't solely the battery.

The oversized battery doesn't sit well with me. I'm pretty sure batteries that don't fit to specifications will not work.

 

[recDNA]

I don't know but I hate usb c. The best features like hdmi capabilities are turned off so I have to buy all new accessories just so I never put plug in upside down? No thanks

 

[Mike Dee]

How many global tales of Nexus 6p or Nexus 5x phones exploding or catching fire have there been? Nil. Both came out in 4th quarter 2015, and both were the first mainstream phones that had USB-C.

Other flagships that have had no issue with their USB-C: HTC 10, LG 5, OnePlus, and a variety of other Chinese Android sets...

Though I don't buy into it, could be their implementation of it. If it had been the cause, I think they would have figured it out.

 

[weave majjik]

Waterproof=limited airflow. Edge screen, s-pen... Even less room for ventilation. A ton of features and technology packed into the thinnest possible case with quick charging. All of this seems far more likely that a charging cable type.

 

[justin1578]

Uhh, no.

 

[Mike Dee]

Waterproof=limited airflow. Edge screen, s-pen... Even less room for ventilation. A ton of features and technology packed into the thinnest possible case with quick charging. All of this seems far more likely that a charging cable type.

I thought about some of those issues like waterproofing but there haven't been issues with their other products. Could be a combination of things

 

[Ronald Andrews]

I was thinking the same thing just seems a likely candidate it's a new feature at the top of the phone could be shorting out the battery somehow.

 

[D13H4RD2L1V3]

Here's something interesting;

"However, a little digging through a ChipWorks teardown reveals the use of a Dialog DA9155 charging chip, alongside the familiar MAXIM power IC. Importantly, this DA9155 does not appear to be found inside the Galaxy S7 or S7 edge. This chip is a slave charger that extends the current capabilities of a master power IC for increased charging currents up to an additional 2500mA. It’s controlled by the application processor (AP) and, interestingly, kicks in during the high-power constant current charging stage.

A read through the datasheet reveals that this chip features an AP programmable output current, switching frequency, and temperature monitor. As a slave device, programming and controlling the current and cooling is all left to the AP, which Samsung would have to program itself.


Careful consideration has to be made not to exceed the battery’s charging current, optimize the switching frequency to the inductor charging circuitry for efficient power transfer, and monitoring the temperature of the battery. Furthermore, the DA9155M doesn’t force a chip reset until TJUNC_CRIT is triggered at 140°C, so it’s up to the AP and Samsung’s programmers to monitor lower temperatures and adjust power delivery."

Obviously, we don't know if it's the cause or a contributing factor, but it's something else to know.

Source: What caused the great Galaxy Note 7 defect and recall?

 

[Mike Dee]

Here's something interesting;

"However, a little digging through a ChipWorks teardown reveals the use of a Dialog DA9155 charging chip, alongside the familiar MAXIM power IC. Importantly, this DA9155 does not appear to be found inside the Galaxy S7 or S7 edge. This chip is a slave charger that extends the current capabilities of a master power IC for increased charging currents up to an additional 2500mA. It’s controlled by the application processor (AP) and, interestingly, kicks in during the high-power constant current charging stage.

A read through the datasheet reveals that this chip features an AP programmable output current, switching frequency, and temperature monitor. As a slave device, programming and controlling the current and cooling is all left to the AP, which Samsung would have to program itself.


Careful consideration has to be made not to exceed the battery’s charging current, optimize the switching frequency to the inductor charging circuitry for efficient power transfer, and monitoring the temperature of the battery. Furthermore, the DA9155M doesn’t force a chip reset until TJUNC_CRIT is triggered at 140°C, so it’s up to the AP and Samsung’s programmers to monitor lower temperatures and adjust power delivery."

Obviously, we don't know if it's the cause or a contributing factor, but it's something else to know.

Source: What caused the great Galaxy Note 7 defect and recall?

How does this explain units that caught fire on standby or off..... Battery fatigue?

 

[D13H4RD2L1V3]

How does this explain units that caught fire on standby or off..... Battery fatigue?

Possibly.

 

[Ten Four]

My guess is that Samsung knows much more than it is revealing to the public, and apparently it is something too expensive to fix quickly and easily. I have wondered if USB C is a part of the problem simply because it allows more power and fast charging, resulting in the generation of a fair bit of heat on my Nexus 5x. Samsung pushed the limits of how fast the battery could be charged, and possibly USB C was more of an enabler than a cause--it allowed for faster charging than the battery can take.

 

[vferrari]

Given how many phones already exist with USB-C, I'd say that if USB-C were the cause of problems on the N7..Samsung needs to fire whoever builds the charger portion of the phone.

They should do that regardless.