I want to be able to charge my iPad Pro (11 inch 2nd gen) from the 12 volt supply on my boat. Will this work if I use a USB-C to USB-A cable and a 2.4 A charger with a USB-A outlet? Or do I need to buy an inverter (12 volt DC to 110 v AC and use the wall charger suppled with the iPad? If the latter, will I need an inverter that has a pure sine wave output?
iPad Pro 11-inch Wi-Fi, Cellular
The easiest route is to purchase a 12V USB charging adapter - available from Auto Stores, Amazon and many other online retailers. There are many good quality 12/24V USB chargers to choose from.
Using an inverter to power the switched-mode Power Adapter, supplied with your iPad may work, but is inefficient at best - and may cause damage to your AC-mains power adapter. Unless using a good quality inverter, I’d be very circumspect with using expensive electronics with it.
The easiest route is to purchase a 12V USB charging adapter - available from Auto Stores, Amazon and many other online retailers. There are many good quality 12/24V USB chargers to choose from.
Using an inverter to power the switched-mode Power Adapter, supplied with your iPad may work, but is inefficient at best - and may cause damage to your AC-mains power adapter. Unless using a good quality inverter, I’d be very circumspect with using expensive electronics with it.
For your iPad, 2.1A (10.5W) at 5V is adequate. 2.4A at 5V (12W) is preferable.
Anker (and others) also offer USB-PD compliant 12V chargers - that are capable of charging your iPad Pro at it’s maximum charge rate - this being 1.5A at 12V (18W) over USB-PD.
If you have a standard USB output it should be fine with a USB cable.
12 volts are what it takes in from the boat, not what it puts out. 12 volt car lighter style chargers output 5V not 12V.
2.1 amps will charge the iPad albeit a bit slow but not terribly so. 2.4 is the required amperage normally.
Yes, I get it. Never intended to connect the iPad to 12v directly, but only through an adapter that converts 12v to 5v. Just wanted to verify that such a device would be suppling adequate power to charge the larger iPad Pro. I did not want to go the inverter route for several reasons.
This is the USB-PD I'm planning to get - available from Apple - mophie USB-C car charger. It will be plugged into a fused cigarette socket.
"18W Fast Charge PD gives your iPhone the most efficient charge possible via a high-speed 18W USB-C PD output
Conveniently makes any vehicle a charging spot
Attractive finish and minimalist design ensure the charger fits into any car interior
Charging indicator lights let you easily see when power is flowing
Engineered for safety, mophie’s smart charging circuitry communicates with your device to determine the perfect amount of power"
Thanks again.
Thanks. I would prefer, as you suggest, to use a 12 v USB adapter. But is that, at 2.1 amps, sufficient to charge the iPad Pro 11 inch?
Thanks, LotusPilot, that's what I wanted to know.
Mophie is an excellent source of power products.
A point of note - Mophie have a Sale, ending later today, that provides a 25% discount across their product range.
Just a point of clarification regarding USB-PD; do not connect your iPad USB connection directly to a 12V supply.
A USB-PD compliant charger will draw 12V from the source supply - and initially output 5V to the USB load (i.e., your iPad). The iPad and USB-PD charger will communicate with each-other over the USB data link; if the iPad requests a higher charging rate, only then will the USB-PD charger switch to providing a higher voltage to the the iPad.
Can I charge my iPad Pro 11 inch 2nd gen from 12 volts
