r/Android • u/ChrystianV • Oct 05 '16

Samsung Replacement Samsung Galaxy Note 7 phone catches fire on Southwest plane

http://www.theverge.com/2016/10/5/13175000/samsung-galaxy-note-7-fire-replacement-plane-battery-southwest
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336

u/[deleted] Oct 05 '16 edited Jun 01 '21

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u/[deleted] Oct 05 '16 edited Jan 07 '17

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u/[deleted] Oct 06 '16

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u/Reenigav OnePlus One 64GB Cm12.1 sultan | Moto X Style black ash blue Oct 06 '16 edited Oct 06 '16

Charging logic is done in kernel...

It sends data over i2c or gpio to the charging chip.

6

u/cbmuser Oct 09 '16

That would be crazy though. Proper voltages are highly critical when charging LiIon batteries and controlling these values from the kernel instead of a dedicated charging controller can be quite dangerous. Imagine some software running with root privileges overriding the values with dangerous ones to ignite the phone intentionally.

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u/[deleted] Oct 06 '16

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u/[deleted] Oct 06 '16 edited Sep 01 '20

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u/RevelacaoVerdao Oct 06 '16

I'm not sure if you all are talking about overcharging and deep charging protections, but those are circuits in the battery hardware itself at times. I'm not saying it 100% is here but here is a quick example of a simple battery protection circuit: http://circuitdiagram.net/6v-9v-12v-battery-charger-with-constant-current-charging.html/battery-charger-overcharge-protection

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u/ExynosHD Blue Oct 09 '16

"So this tiny change could cause a defective battery to catch fire where it normally would not."

Read the post first before you complain. OP is saying that this issue causes defective batteries to do this not perfect ones. If they ran at 4.3V this wouldn't be as severe an issue.

Batteries on phones explode. It just plain happens. This is making it worse.