Hi I have a few old ipads that dont have the usbc-connector. But I've noticed big speed improvements of using a 30w charger on the larger iPad 12.9 gen1 and gen2. The charge speed is better on the ipad 9.7" and iPad mini, although they're nowhere near how fast it is on the ipad pro. Is there are data around which tells you what the high watts a given iPad is capable of taking from a 30w charger using the USBc to lighting cable? The reason why I ask is I want to get a car charger for my iPad mini satnav. With car chargers you really should get just the size you need and not any more. Because you could park up, turn the ignition off and the charger is draining the battery down fast without you realising. My car charger is 15w, I put the ipad mini on a 30w home charger and the improvements were marginal. Which leads me to think that a 18w charger is the best the iPad mini can benefit from.