Gadgetory

not all chargers are equal at about seven right here and each is slightly different in terms of power delivery this beckons a brief lecture in electrical circuits got your pens and notepads ready folks here we go on the face of every power brick you'll find a bunch of jumbled words and letters that most of us to be quite frank often overlooked as long as my device charges that's all I care about exclaimed sour Sally I like to take things nice and slow man and so does my phone when it you know like come to charging and whatnot proclaims stoner Stewie no said no one ever with the exception of an increase in both battery temperature and dendrite which are entirely separate yet non pivotal issues for the most part we want fast phones are now coming out with quick charging capabilities and that's nice and all but why can't I use just any old charging brick well for that matter why can't I use my computer's own USB ports well you can and there's nothing stopping you from doing so but there are very evident downsides to these cue the circuits lesson so there are three basic terms you need to know power amperage and voltage power is defined as the product of amperage and voltage that's essentially all you need to know your phone's charging time is determined by the amount of power supplied to its battery and the Chargers job to convert and deliver a specific amount of power to the device in question find an e old power brick you've got lying around maybe when you're using in your phone at this very moment and scan for a cluster of letters and numbers typically engraved or printed directly on the charger itself you should see the words input and output for any device that plugs into a wall depending on where you live the input line should read something like 100 to 240 volts 50/60 Hertz etc this is unimportant it's the output line that you want to pay close attention to here things will vary depending on the break you're looking at first should be the voltage for almost any break that connects via a USB hub to your phone this should be somewhere around 5 volts it's the universal standard for USB however the amperage you'll read denoted by the capital letter A will be unique this value could be anywhere from point 2 amps to upwards of 3 amps and that my friends is where size matters with the exception of turbo chargers and special power delivery systems all power bricks for the USB interface will deliver X amount of power where X is again voltage times amperage in most cases voltage is 5 which means that you'll mainly want to be focusing on amperage to determine how much power also defined in SI units as a joules per second or watts are being supplied to your phone from said power brick these power bricks here are rated from point 4 amps or 400 milliamps to 0.85 amps and have a relatively low power output this one here delivers approximately one point seven six watts of power and this one here delivers four point three four watts so you can see that subtle changes in amperage even while the voltage remains relatively constant results in a substantial change in power delivered to your phone check this one out this aki amp five way charger delivers a grand total of 12 watts of power through each of its four USB 3.1 headers and a few devices USB type-c compatible variable power delivery between ten point eight and nineteen point five watts this Motorola turbo charger depending on your device's specifications can deliver up to a staggering twenty five point eight watts crazy but okay Greg that's fine and dandy and all some bricks deliver more power to your phone so what show me the numbers that's what I'm about to do I use three devices a Motorola X pure and Apple iPhone 5s and a galaxy s4 I think it's a fair spectrum of phones to test with I also used five charging ports the Motorola turbo charger which came out of the Moto X pure box by the way the Aki amp charger a point eight five amp generic power brick a 1m port on my stereo receiver and a USB 2.0 port on my personal computer which delivers only 2.5 watts of power at five volts and point five amps I allowed each phone to completely charge to 100% timing each with a stopwatch I then would do as much as I could on the phone including running Geekbench over and over keeping the LED on and streaming music in the background until the phone died and will not turn on again and then switch it up with a different charger I charged all three phones on all five Chargers the exception being the iPhone 5s and the Motorola turbo charger since the charger is the ability to deliver more than five volts it cannot use the USB interface which means I cannot connect my lightning cable to the brick no big deal though that's why I have the Samsung in the loop anyway here we go so let's run through the first set of graphs well first the one app receiver in 25 amp generic brick times were relatively consistent across the board and this should have been the case the iPhone charged the quickest perhaps due to its significantly smaller battery size followed by the Moto X and lastly the Galaxy s4 average time was roughly 350 minutes or just under 6 hours that may seem a bit long but if you think about it that's a short enough charge cycle to be used while you're sleeping at night assuming you get a full eight hours the Aki amp charger was quite impressive cutting charging times in thirds with all three phones yielding a roughly one hundred and thirty minute recharge time it was fairly consistent across the board to say the least so just over two hours this is thanks to the wall come quick charge 2.0 and 3.0 integration and high amp output the Motorola turbo charger performed as expected with its intended user the Moto X resulting in a mere 48 minute recharge time keep in mind this is from 0 to 100% folks followed by the s4 which is also quick charge capable but not at the 12 volt output that the ex Pyrrhus hence the 87 minutes so not bad mind you of course we couldn't test the iPhone with this charger but expected to fall somewhere between the expir and the s4 thanks to its smaller battery a shocking result involve the USB 2.0 header both the iPhone 5s and galaxy s4 did charge albeit for lengthy amounts of time but the Moto X pure for reasons initially unknown refused to charge the phone started up at 0% worked its way to 3% over the course of an hour and a half no I am not exaggerating there and then proceeded to decline a percentage once again back to 0 at which point the phone died restarted itself and then repeated the cycle this was likely due to the underlying processes taking place within the Moto X while it was charging basically the phone was consuming more power while charging than it was actually receiving power from the charger that is unfortunate and actually quite comical but what I want you to take away from this video is the fact that while cheap and generic charges will get the job done it's the beefier ones that pack the punch for quick charging times look no further than the amperage rating on the brick itself if it's a USB 2.0 port that amperage is fixed to half an amp if it's a turbo or quick charger then you have to take into consideration both the voltage and amperage ratings special thanks to Aki for hooking us up with their five way amp charger as well as their car charger which includes both a USB type-c port and their quick charger USB port you can plug up to five devices into there a charger with no loss in charge time and with type-c gaining support on phones like the Nexus 6p and 5x you won't regret opting for the newer tech I've attached links in this video subscription to both of these products be sure to check them out and let us know what you think if you liked what you saw in this video and you think the experimentation was cool and unique give this thing a thumbs up give it a thumbs down I feel the complete opposite or dated everything about life click Subscribe but if you haven't already stay tuned for for an interesting PC build featuring an interesting video card that's all I'm gonna say folks this is science studio thanks for learning with this