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Battery Level over One Charge
The first graph shows how long it takes to charge a phone (Galaxy S5) from almost dead to full. This highlights how much faster the USB 3.0 cord/brick works. Also, it's interesting to note that the wireless charger seems to be a lot more linear, while the USB 3.0 starts fast and then slows down.
Temperature over Time
This is a graph phone temperature over time, logged at 5-minute intervals. The red line stops because the USB 3.0 charger finished then (again, way quicker than wireless). The difference in temperatures reached is pretty huge.
Temperature over one Charge Cycle
This shows the temperature over one charge from ~10% to full, ignoring the time taken to get there. Interesting to note that the USB 3.0 charger, in addition to being way faster, starts cooling off much earlier in the charge cycle.
Raw Data
Here's the recorded data. Thanks for reading!
DEATHHHHH
GIVE THE TIME A FUCKING UNIT YOU SLUT
SunderedQueen
A productive imgurian, I'm proud of you son
Steps1000
OP, this is nice, but I'm SO MAD that you didn't say what units your time was in. LABEL YOUR GRAPHS PROPERLY (pls)
valen00
wireless will be limited by available current, wired you are going to see the constant current/constant voltage charge cycle much more
gasoleeen
You need to get laid dude, fast.
GrateLordCheesus
Yeah! Science, bitch!
Nobodyn0se
Wow. I feel like MUCH less of a nerd now. I need to work harder...
brb4ever
What I DO know is that mitochondria are the powerhouses of the cell.
maratheconover
haha great music vid that one is.
HighlyOpinionated
Mmmmm... Graphs. I love me some graphs late at night.
warrior911
Updoot for awareness
BananabalNectar
*nods in scientific affirmation*
Twinkiesonyourpizza
Ooo baby I like it raw
SunfishHero
Comment.
th3kingslay3r
AndIfarted
http://imgur.com/EuuBwlG
ilovecake
Oh god... there are no comments on this. *think of something witty... think of something witty* Life... uh, finds a way?
Lilly64
And the crowd goes mild
wolfgang1107
Neat.
imeatingricekrispietreats
cool.
PharmasaurasRx
bitches love metrics
RayJames
Can someone translate this to merican?
Lobsterwaffle
Only one set of trials? I wouldn't expect too much variation, but if you're gonna science, do it right. Scientific method, son.
Benthekido
Also is there any significance to this data? SHOW ME THE STATS MAN!!!
PeskyGentlemen
But does it overheat?
o11c
All heat is overheat in the sense that shortens the life of electronic equipment. Or heat change, rather. Approximately.
causality
No. Most smartphone SOCs support operating temperatures of up to 70c.
Sakkura
The SoC is not the most heat-sensitive part in a phone. You wouldn't want the battery to go near 70C.
causality
Indeed. From his data, the battery is hitting its max charge temp of 45 and stopping the charge to cool down, further increasing charge time
Eogos
Most phone case charges (like mophie cases) will make your phone warm to touch but unless you are in hot weather aswell 1/2
Eogos
As charging via the wireless charging case then the chances of an overheat go down. Source: me and a few other friends own mophie cases 2/2
kmikl
Not really: look at the wireless temps. 45 Celsius isn't really high, but also consider that wireless isn't meant to charge from ~10%, /1
kmikl
/2 it's meant to take it from 60-80% to 100%. It does drop the charge level because of heat.
PharmasaurasRx
But will it blend? That is the question.
o11c
Once I had to give feedback on someone for a position, I was asked "but will he blend?" (as in, get along) and couldn't answer seriously.
PharmasaurasRx
Don't breath him
WowSuchWow
made me snort picturing that!
OutdoorHuman
I like your labels, but "Time" needs units. I can infer that it is in minutes, from reasoning and your comments, but still :)
Ninjadudeclaw6
30 time is quite a bit though
kmikl
It isn't seconds, or hours, but, it could be days.
GerhardRammelhausen
it takes 110 time to charge with USB-3, can't you read?
TicoGuy
30 Time is totally acceptable Unit, I Should Know I Passed Science stuff class 1
ParacetamolThePanacea
Could have been 30 speed
AvengeMeKriegerBots
Mmmmm... Raw data
RadionicPsychotronic
Stick it in my brain!
SpecimenSpiff
Give it to us rrraw and w-w-wriggling!
AvengeMeKriegerBots
You beat me to it :)
AvengeMeKriegerBots
http://imgur.com/OjSZBry
HeraldOfTheBadger
Between the raw data and the properly labeled axis, I am just ... so ... happy.
iPostReactionMemes
I read That in Homer`s voice. I approve.
AvengeMeKriegerBots
Yes
sleetewayne
Ya know, it's pretty rare for people to release their raw data.
rainbowcoloredpoop
Thatsmyfetish.gif
BenJScar
Did I miss the units? Or is time being measured in "time units"?
noonerspisms
Dammit guy, just about every file at work has a raw data sheet, now I won't be able to not giggle at it
Thatgaybiochemist
I like it raw. :)
17thspartan
And wriggling?
Thatgaybiochemist
So raw so precious!
DataLady
Its beautiful isn't it?
AvengeMeKriegerBots
Yes it is. For me the beauty is in the unknown, the knowledge that may still be found in the un-analyzed...little or big
Eljews
What about how long it takes to charge in the microwave?
SihayaOfTheAllPowerfulMeh
I don't know. I just push the popcorn button.
17thspartan
The galaxy S5 doesn't have iOS on it. So sadly, they'll never have that technology.
doesit
Pleb android users aren't even water proof or bend proof. smh
kmikl
Yeah. The phones don't even come in gold all the time.
ianofminnesota
I would be interested to know the temperature when it is done
IMayOrMayNotHaveTroubleFindingAndOrChoosingAUsername
http://media.giphy.com/media/7xVHpIIxVDHcQ/giphy.gif
BaxtersSoup
More heat, but it definitely charges the battery quicker. 9/10, would recommend.
TheFeralDog
That doesn't come out until iOS9 some idiots were fooled into thinking it came out earlier
leftyshuckles
Fastest charge, highest temperature
imhoots
REAL Science!!
FlamedLion
Now THIS is what I come to imgur for.
17thspartan
I'd like to see the galaxy S6 stats for this. Since it has wireless charging baked in, and it isn't a 3rd party solution. Still, good stuff.
DownVoteForWhat
You must get disappointed a lot.
FlamedLion
All the damn time.
cfields929
Who brought this out of usersub?
FlamedLion
Lucifer.
CaptSlowShow
The good warriors in the bowels of hell.
GreedyJungle
I don't know what to do with this information.
TrustmeIamdutch
Bf and I were thinking about getting this.. might not now. :/
IMetGodShesBlack
It makes me want to charge my phone.
kurmathephoenix
Yes you do
Denvercoder09
Put it in a salsa for some mild kick
kthung
Crunch the numbers
DrMcDreamy
Statistical analysis
iamwpj
Make informed decisions
RevolutionaryCakeMix
eat it, seems tasty enough
Vesane
Actually, if @NoahF is still logging data, I'd also like to see how the discharge rate is affected by those charging methods (also USB 2.0?)
cantspellmanslaughterwithoutlaughter
http://gifs.danieljosephryan.com/The%20Office/Stanley%20Shove%20It%20Up%20Your%20Butt.gif
motleymot
This whole post is sausage to me
NickRivieraMD
don't use wireless charging.
handydandy11
Thats how i felt while taking statistics
rype27
Shove it up your butt!
JonSnowForKing
Shhhh... just enjoy it
listen2mylies
It's best to stuck it in rather than waiting for it to take care of itself
GreedyJungle
Huh. First time I've ever gotten top comment. Neat. NOBODY TAKE THIS AWAY FROM ME.
AdamantIntransigent
If you need a charger and a hand warmer, go wireless.
jdeman
Repeat the experiment
ThisIsGod
You invest in an expensive mortgage with a high sub prime loan with low APR rates at a fixed dividend 3 fold the times of house plant.
shakespeareanwheelies
Dont buy a wireless charger.
NOINOON
It's a trade off between convenience and efficiency. Everyone gets to decide what they want. Slow charging may reduce battery wear. >>
NOINOON
>> I use a 500mA charger on my night stand since I have 6-8 hours to spend charging the phone while I sleep.
NickRivieraMD
I got a wireless charger a while back and found it really inconvenient. You can't really use the phone while it's charging.
GoWithTheFloww
Use USB 3.0. Or don't, I'm not your fucking mother. I like eggs.
5700
Mom?
localvagrant
So does this girl
mfdave
i do not like them here, i do not like them there, i do not like them anywhere @GoWithTheFloww .
leftyshuckles
Eggy Weggys!? Let's smash 'em!
blackletum
Just do what I'm doing, break out the kleenex's and lotion and just let it happen ( ͡° ͜ʖ ͡°)
CoolNickName
°)
slimvictor
I had thought such an answer was obvious, but thanks for clarifying for those who don't think like we do.
DawnLoves
And send tape to my inbox.
blackletum
fuckurbutthurt
The klennex's what? Cant leave a cliffhanger like that!
SpecimenSpiff
Box.
Kekpot
The Kleenex is box?
LordOfTheFilth
umpbumpfizz
Your username is oddly appropriate.
IFellOnMyKeys
How disappointed were you when you posted that and saw that the face was messed up?
blackletum
the face is fine on my screen
IFellOnMyKeys
Damn, really? Now I'm disappointed...
SmashingK
Data porn?
vavavoooom
Maybe I'm biased because I like a little science, but damn this beats so much of the shit on the fp. This is actually interesting.
PatoBlanco
You and I have two very conflicting conceptualizations of interesting things
BekahBearz
I'm a research tech in breast cancer research and I love this stuff. Data is my favorite part!
Guod
Stop spreading your deadly obsessions
IFellOnMyKeys
Biased or not, you're absolute right. I couldn't agree more.
Ihatewasp
mmmmmmmmmmmmm... data
amadeo38
I think the phone temp depends highly upon how much $ you spend on your QI charging pad. Cheaper ones tend to heat the phone up more IMO
HowYouMean
Sorry, your comment reminded me of this. https://s-media-cache-ak0.pinimg.com/736x/6e/ae/df/6eaedfdaf269075f4b40b2c5929434cf.jpg
vavavoooom
But I do like space anyway. Who doesn't think that shit's pretty? Also, I thought of this:
yesiamaphysicist
Nothing beats spending countless hours doing math/coding/reading dense research articles resulting in simulations of pretty space pictures.
umpbumpfizz
Your username checks out.
hoeya
I actually love dense articles. Deciphering them is actually a joy, especially as a student. I just hate paywalls.
umpbumpfizz
I loved the free access to journals that my undergrad provided. I would spend lots of time reading them for fun, but no more alas.
zimirken
I read a hundred year old textbook about thermodynamic analysis of a steam engine the other day for fun.
vavavoooom
haha I get what you mean. As it so happens I actually work in a lab with fruit flies doing all of that, but I didn't think it was relevant.
HowYouMean
Haha just giving you a hard time. I run across so many people who are like the one depicted in the comic.
vavavoooom
I feel ya, it's tough. On one hand, you want to encourage people to like science in any way possible. On the other, they just like ifl.com.
JuiceBoxMan
The USB charge tails off at the end because it switches to a trickle charge around 70-80% of battery
Wombatish
Is the USB fast charge compatible? May be that all 3.0 is, idk, thought it had a proprietary lock. Could influence this a bit.
Lionskull
All I could think of after seeing those charts is how awesome derivatives are.
NOINOON
Looking at the graph I'd say it switches at 90%. It's a phone feature and it does that on wireless also. It's just less visible.
kmikl
On wireless though, it's dealing with heat issues at 160 minutes from the base. Inductive charging works at a lower voltage, so there's /1
Sakkura
Look at #3, it slows down just before 80%. That's where the temperature starts to drop (with wired charging).
kmikl
/2 no need to drop voltage down to get a proper float charge level.
IThrowLemons
Sort of but not quite. Trickle charging is charging a full battery at a low rate to counter self-discharging of NiMH and NiCd batteries. (1)
gewalt
uh, that does not meet my definition of trickle charge. but what do I know, Im just a retired nuclear engineer.
IThrowLemons
I would very much like to see your definition, please.
Sakkura
Anything less than 100 MW is a trickle to a nuclear engineer? :P
IThrowLemons
A lithium-ion battery should not be trickle charged because they get damaged from overcharging. What's happening here is the CV part of (2)
IThrowLemons
the CC/CV charge cycle where first a constant current is applied with an increasing voltage until the voltage reaches 4.1 or 4.2 V(cell) (3)
IThrowLemons
This happens at ~80% capacity. Then the charger applies that constant voltage with a decreasing current until the current reaches 0. (4)
IThrowLemons
That, of course, takes less power than the constant current (CC) part so the charger produces less heat. (5/5)
ian9outof10
So should a good wireless charger. The S5 only has after-market solutions so I wonder if that's why it gets hot.
3lemental
The heat is likely caused from eddy currents in the charging coil. Wireless charging is extremely inefficient. Source: I'm a physicist
Rednok
Phone-"chargers" are merely DC power supplies and do not control trickle charging. The actual battery charger is located inside the phone.
ian9outof10
True in old phones, but with Fast Charge and the like the phone and charger communicate with each other to manage the current
Rednok
1/2 True, but Quick Chargers are also only DC power supplies, just with a negotiable voltage. They can never decide when to trickle or
Rednok
2/2 stop charging. All that is controlled by the phone.
kmikl
Inductive chargers use a much lower voltage so you don't toast your battery.
Rednok
Voltage != Current
kmikl
Yes, and you don't have to DV, because current is not induced, voltage is. http://www.livescience.com/50536-what-is-wireless-charging.html
Rednok
Your facts are correct but they don't apply in this case. A Qi-receiver like the one OP uses simply outputs 5V 1A to the phones input pins.