How do I chose a charger for iPad Pro 12.9 ver 4, for boat/car (12V supply)?

Most models of iPad require a Power Adapter rated at 12W or greater to reliably charge. 5W Power Adapters intended for older models of iPhone are inadequate to charge an iPad; if the iPad charges at all, charging will be very slow.

Be aware that many computer and in-vehicle USB ports cannot source sufficient power to charge an iPad. Unless explicitly designed for charging connected devices, these USB ports are typically limited to 0.5-1A @5V (i.e., 2.5-5.0W).

As such, you need to identify a USB car charger that can provide at least 12W - using either a USB-C or USB Type-A connection and appropriate USB cable.

If the car charger uses the older USB Type-A connection, you’ll need a USB Type-A to USB-C cable. For example:

• mophie USB-A Cable with USB-C Connector (1 m)

https://store.apple.com/uk/xc/product/HN892ZM/A

Otherwise, if the car charger has a USB-C connection, you’ll require a USB-C to USB-C cable:

• USB-C Charge Cable (1m)

https://store.apple.com/uk/xc/product/MM093ZM/A

Apple directly market these third-party car chargers (designed for use with a standard automative 12V socket) compatible with your iPad using an appropriate cable:

• mophie USB-C Car Charger

https://store.apple.com/uk/xc/product/HN7Z2ZM/A

• mophie Dual USB-A Car Charger

https://store.apple.com/uk/xc/product/HN812ZM/A

• mophie Dual (USB-C/USB-A) Car Charger

https://store.apple.com/uk/xc/product/HN822ZM/A

Another thing you can do is look for an inverter. I’ve linked an amazon page to give you an idea what I’m talking about. Those change the vehicle plug into a ‘inhouse’ plug that you can plug your normal charger into.

one word of caution about a boat…well boats mean water and water and electricity don’t always mix so you may wish to exercise caution in charging your device.

https://www.amazon.com/Power-Inverters/b?ie=UTF8&node=583328

Skydiver119 wrote:

one word of caution about a boat…well boats mean water and water and electricity don’t always mix so you may wish to exercise caution in charging your device.

This is being the principal reason to avoid consideration of a 12V to AC inverter!