How long would it take to recharge with 1.21 GIGAWATTS!!!
To anybody who doesn't get that joke,
http://www.youtube.com/watch?v=mjCRUvX2D0E
It's jigga, not giga watts, listen to the pronunciation in the movie
How long would it take to recharge with 1.21 GIGAWATTS!!!
To anybody who doesn't get that joke,
http://www.youtube.com/watch?v=mjCRUvX2D0E
It's jigga, not giga watts, listen to the pronunciation in the movie![]()
A modern lithium polymer battery found in our iPads can EASILY handle a 1C charge rate with very little heat production. 1C equals the rate required to charge a lipo battery to full capacity within 1 hour. Our latest MBPs can almost go zero to fully charged in less than an hour with the laptop off (Again Apple choose to go with a smaller/lighter adapter at the expense of max charger output so to get the fastest charge rate, the laptop needs to be off or in sleep mode) 11,560mah 3.7V battery could easily handle 11.56 amps at 3.7 volts to fully charge in 1 hour. The problem is that would require almost 9 amps at 5 volts that USB runs at. I don't who much you know about wire/connector current carrying capacity, but those tiny little pins in the dock connector can not safely handle that amount of current without overheating. I suspect Apple kept the small dock connector for speed to market and also for compatibility. Ways you can get around are use a much thicker connector, or increase the voltage. If Apple made a mini-magsafe adapter for the iPad 4 that ran at 20 volts for example, it would cut the current down to little over 2 amps. You can get by with a smaller connector again.
I wish I could, nothing would make me happier but my circumstances being what they are, I have no choice. Just be happy you're life is easy enough that you're able to fit 7 or 8 hours of sleep in your schedule.
Definitely burning a hole in my wallet!!!! A whopping $6.55 per year lol. (well, at least for the ipad only. Can't comment on the cumulative cost of all the apple products owned).
http://www.electricity-usage.com/Electricity-Usage-Calculator.aspx?Device=3rd+gen+iPad&Watts=10&CostPerKWH=.30&HoursPerDay=6
It's jigga, not giga watts, listen to the pronunciation in the movie![]()
A higher voltage wont charge the battery faster because charge is a function of current and time. Higher voltages would only be useful for overcoming voltage drop over the conductor. I suspect your theory on the tiny pins is likely the best one. The iPad needs a better way to connect itself to charges and USB connectors. I HATE those 30pin connectors. They are such a pain to deal with.
Matt
Great idea! Maybe he can fix us so we only have to eat once a week. Three times a day, what an inconvenience. Every time I go away I have to bring money to buy food, find acceptable restaurants three times a day. I don't blame God. The fault lies with our modern rushed schedules.
No the fault lies with the fact that Apple refuses to spend any of its cash pile to try and solve these issues, instead they simply pick off the shelf components at the lowest price to maximise their unit profit margin. They don't contribute anything to advancement of modern science/computing.
1) Apple isn't in the business of advancing science, that's what scientists do
2) They've made millions of the most insane consumer displays available, and have kept the battery life the same as the previous model
Your criticism amounts to 'let me pick an unreasonable standard for something Apple didn't do so I can pretend their products are basically cardboard junk'
...they simply pick off the shelf components at the lowest price to maximise their unit profit margin.
They don't contribute anything to advancement of modern science/computing.
Oh you mean the displays they purchased from SAMSUNG. Yes they're great aren't they.
Good advice unless your overnight is less than six hours like mine. I have to make sure I don't go below 20% during the day.
What's your point? Apple contracted this work from Samsung to Apple's specs (which include QC).
No they didn't. The displays are designed and manufactured by Samsung. Apple had nothing to do with their design, specs, etc. They simply purchased Samsung screens. Anybody else can buy the same screens and put them on their tablets if they want to.
I didn't say the higher voltage will charge the battery faster. The higher voltage allows you to use smaller gauge wires and to continue using a small charging connector as to get the same charge rate with a higher input voltage allows you to use less current going through the charging system (of course there will be a voltage regulator in the charging circuit to step down the voltage) than if you just kept it at 5 volts. What apple could've done is what they've done in the last already. Go back to 12 volts. The 3rd gen iPod used the current dock connector hooked up to a 12 volt FireWire powered charging adapter. At 12 volts and keeping it at 2 amps, the iPad 3 could've charge almost 2 and a half times faster than the current charger without having to make a new connector. They also could've kept the iPad compatible with current accessories.
That's a good idea, although it would take some extra circuitry to be able to switch between 5 and 12 volts. Heck, go to 24 like the laptops while you're at it.
1. I never suggested Apple sourced cheap components as you suggest. I was stating a fact - that Apple source almost all of the components in their products from third parties rather than developing them in-house. Samsung didn't build the displays just for Apple - the same displays will almost certainly be on their own Galaxy Tablets sometime this year. Apple has obviously issued a tender for which companies respond with whatever products they have available.1) If you think Samsung just has millions of tablet screens laying around, and they make random configurations without an eye to what their buyers want, I have no idea what to tell you. The point is that you mischaracterize this state of affairs as Apple going down to Radio Shack and buying some cheap equipment, you know, whatever is around, to put in their devices, and that this is a bad thing, because Apple has an obligation to spend their money how Shaun, UK sees fit. It's not like Apple looked at the Samsung screens and said "well, this isn't what we really wanted, but it's cheap and it's what's out there, so let's run with it anyway." But that's what you're saying.
2) I still have no idea how the above has any bearing on anything in this thread, since what prompted this whole exchange is your complaint that Apple didn't make better batteries than they did, and that they don't make the kind of technological advances they are (somehow) obliged to. I'm still waiting for your point.