The iPad Pro is a massive device, and as such, it contains a pretty significant bit of battery. Unfortunately, the iPad Pro comes with a 12 Watt charger, which makes charging times slow, especially if you use your device while it’s charging. In fact, if you pump your iPad Pro to maximum brightness, you might actually lose battery life even when it’s plugged in.

But there’s some potentially good news, as spotted by an eagle-eyed MacRumors forum member, the iPad Pro is capable of accommodating a much beefier charger than the one it ships with. Here’s why a faster iPad Pro charging solution might be in the cards…

Calculating wattage

First of all, a brief lesson on wattage. Wattage can be calculated by the following expression: Watts = Volts x Amps.

Simple, right?

If you look on the side of your iPad Pro’s 12W charger, you’ll see the following: Output 5.2V and 2.4A. That’s 5.2 volts and 2.4 amps. When you multiple 5.2 by 2.4 you get 12.48, which is rounded to the nearest whole number, 12.

How much wattage can the iPad Pro handle?

The next question is whether or not the iPad Pro can handle more than 12W. To find the answer to this question, look no further than the iPad’s regulatory information, which is found in Settings → General → Regulatory.

Power information isn’t listed for countries like the U.S., but notice what we see under Mexico’s regulatory information. Yes, that’s the input wattage: 14.5V x 2A = 29W. It also lists the 5.2V X 2.4A (12W) of the standard iPad Pro charging brick that ships with the device. With this in mind, it’s totally possible that Apple could be planning another iPad Pro charging brick that can charge the device faster than the stock one can.

A 29W charger?

Now that we know that the iPad Pro supports a charger capable of outputting 29W, does Apple already have a charger like this that can deliver such power? Actually, yes, it does. Have a look at the 29W USB Type-C charger:

This 49.00 charger was created with the 12″ MacBook in mind, as it features a USB-C connection instead of the typical USB connection used by Lightning cables. Unfortunately, it looks like the current Lightning cables that Apple sells aren’t capable of delivering the needed power from the 29W adapter to the iPad Pro. Lightning connectors use an 8-pin standard, but since the cable is reversible, there are actually 16 pins on the connector in total. Interestingly enough, the iPad Pro is the first iOS device to feature pins on both the top and the bottom of the female connector.

Extra pins on the bottom of the iPad Pro’s Lightning port

Perhaps a new Lightning cable will need to be released that can handle the extra power, similar to how Apple released an updated Lightning to SD Card Camera Reader that was capable of taking advantage of the iPad Pro’s new USB 3.0 speeds.

Whatever the case may be, having the ability to charge our iPad Pro’s at a faster rate would be a welcomed addition. Charging time is one of the few complaints that I have after using t device on a daily basis for the last two months.

What do you think? Would you entertain the idea of purchasing a faster charging solution for the iPad Pro?

• Mr.Coolfreak

So from the the regulatory info, it seems iPhone is capable of 5 Watts. But, iPhone charges MUCH faster with the iPad 12 Watt charger. Why is that?

• Tim

Bigger charger has more amps. It’s the amperage that the charging circuit can handle which makes it charge faster, and that can go to as much as 2.1amps for the iPhone.

• mav3rick

Batteries capacity or charging / discharging rate is calculated in Ah. Not “Vh”. Ni-Mh batteries are charged by the current. Not by the voltage applied. Actually 5.2V / 2.4A charger will charge the device faster. In aprox. 4.5 hours compared with just over 5 hours with the 2A charger. (10,307 mAh / 2400 mA = 4.294583 hours – 10,307 mAh / 2000 mA = 5.1535 hours)

What a miss informational post. Slow day. Or “one of the several reasons why you should buy another \$50 charger for your \$1000 ipad”. Because it was sold with the “wrong” charger. Other reason: “Like any corporation, Apple’s goal is to make money, and the company has been known to be incredibly good at doing just that”.

• the hood

The mere fact that using the supplied charger with max. brightness still doesn’t keep up is a bloody disgrace and absolutely pathetic for a \$1000 device. I wouldn’t expect that from Sony or Samsung let alone Apple!

• mav3rick

They will definitively try to sell you another “powerful” charger only if they can fill a patent to change the laws of physics on the planet, “charge a 3.77V battery with 14.5V voltage”. And iDB might just convinced them. And if this is not possible, as lately innovations, they might try to come up with an “unapologetic” rose gold color charger plus extra rose gold plated pins bigger Lightning cable at just \$99.99.

• Daniel

No, you are only partly correct.
The internal battery is a 3.77V Li-Ion battery. That means, the 5.2V 2.4A (12.48W) input needs to be converted to 3.77V. Because the 12.48W stay the same, the battery is charging at 3.31A.

When we input 14.5V 2A we get 29W. Since the battery is still chanrging at only 3.77V, we again need to convert that. 29W @ 3.77V equal a charge current of 7.69A. More than double of what the default charger can deliver.

• mav3rick

Well, you are totally wrong. I challenge you and the writer here to get a bigger cable, as only cable should be the problem, grab more pins from the lighting port, LOL!, and connect a 14.5V charger to your precious ipad and while watching it fuming and smoking think at what melted shape you’d like to get it converted to. Because such conversion from charger output 14.5V to 3.77V is only in your imagination. Or you can search and educate yourself why a 5V-5.2V output voltage only can charge a 3.77V Li-Ion battery.

• Daniel

Well, you will see, when apple releases a lightning to USB-C Cable and you will be able to charge your iPad Pro in less than half the time as before 😉
The iPad will handle the 14.5V just fine, IF it can successfully handshake with a USB-Power Delivery compliant charger, that can also deliver that voltage. There probably is a transformer inside the iPad, that converts the voltage down to the one needed for the battery to charge, while maintaining the available wattage and thus increasing the current. (Wattage will always stay the same, decreasing the voltage increases the current. Simple Electronics 101)

It works the same as the power brick itself. While it can deliver 2.4A @ 5.2V, it will draw MUCH less current from the outlet at a much higher voltage. (less than 0.5A @ something between 100 and 240V)

• mav3rick

Voltage transformer inside the iPad???!!! You are way out of even Simple Electronics…maybe 0.101…

• Daniel

Not exactly a voltage transformer, but something similar. (like a DC-to-DC converter)

The iPad Pro includes Dialog’s D2257A and D2231A used for normal power management and fast charging (not available yet, because no USB 3 Cable and power brick exist).

• Vinicius Errero

Yeah, there’s now a USB C to Lightning cable

• Giovannidm

And mav3rick looks like a fool

• ⚓Justin Blatchley⚓

They make usb-c to lightning cables anyone try the apple 29w usb-c with one of the cables with the iPad pro?

• Daniel

You would need a USB-C to Lightning cable that can take advantage of the extra pins in the iPad Pro’s Lightning Port and thus USB 3. None of the 3rd party ones available now do that…