Depending on the charger used, the iPad is not easily charged.Introducing the basics of iPad charging

If you are using an iPad, you have an iPhone or a smartphone, and it is often the case that it is an iPad.In that case, it is easy to manage peripheral devices because you can use your own cables and chargers.On the other hand, there are some things I want to keep in mind.In fact, depending on the charger used, the iPad is not easily charged.[See all photos, such as various power adapters] This time, I will introduce the basics of such an iPad charging.

Let's check the back of the charger

The second line is written like "output: 5V === 1A" (it is a symbol that represents a DC current because the upper side is connected instead of "=").

First, see the back of the charger used on the iPhone or iPad at hand (a white cube -shaped adapter inserted in the outlet hole). Such a number is written. It's like "Output: 5V === 1A". "V" is a voltage, "A" is a current, and "W" is a unit that represents electricity. Speaking of which, some people may have heard it in class. Each relationship is v x a = w. The nature of electricity is often compared in the flow of water so that it is easy to imagine, so follow your predecessor. When simplified, "V" can be explained as the height of water falling, the amount of water is the amount of water, and the W is the power to move the water wheel. If the height of the water falls ("V" = voltage value in the notation of the charger) is constant, the flow of water (the number of "A" in the charger notation = the amount of current) flows. If it is only, there is not enough energy to turn a heavy water wheel with a lot of gears (to efficiently charge the iPad battery).

The numbers vary from charger

10W USB power adapter.Output is 5.1V/2.1A.From Apple official help page

Depending on the charger used, the values shown in this "V" or "A" (or "W") vary.In the past, a genuine Apple charger (adapter) was included for each product, so let's check this first.There are three types of to remember.The past model iPad included a 10W or 12W USB power adapter.The iPad mini series is also 12W from the fifth generation.From here, if you charge the iPad, 12W = 5.2V/2.If there is about 4A output, it can be judged enough.On the other hand, environmental consideration has been given priority recently, and many Apple products, including iPads, are no longer included.If you do not have a charging adapter that you used in the past model and want a new charger, you will need to buy it yourself.The online Apple Store handles two types of 5W and 12W, and has a 20W and 30W charging adapter with a USB Type-C port.At least 12W or more.If you share it with the MacBook charging or use the USB Type-C-USB Type-C cable, you may want to select an adapter of 20W or more.