Most of the current smartphones have a built -in battery and cannot be replaced.The other day, an article that said, "It's a problem not to be able to exchange" was buzzing on SNS.The tone of the manufacturer is that it cannot be exchanged to buy a smartphone.
Hmm.
From the standpoint of keeping up with mobile phones and smartphones and knowing about manufacturing, I think it's too aggressive.
There is a reason why the battery replacement is gone.On the other hand, there is no problem in replacing the product and battery.
I would like to summarize what they are.
About this article
This article is a part of the email magazine "Monday Buffet" in Kodera and Nishida, which is distributed every Monday.This article was distributed on July 5, 2021.Click here to apply for e -mail magazine subscription (660 yen per month, tax included).In addition, the NOTE version of "Kodera / Nishida's Column Buffet" (980 yen per month, tax included) has started.
The evolution of battery technology has created a "built -in type"
A long time ago, many of the digital devices were able to "battery replacement" while adopting rechargeable batteries.More than 10 years have passed since the smartphone to PC has changed to a form that can not be replaced.
Why couldn't I change it?There are multiple reasons there.
The biggest thing is that the shape of the battery has changed.
What is used in the current digital devices is a technology called "lithium polymer".The basic principle is the same as the "lithium -ion rechargeable battery", which was put into practical use in the 1990s, but the difference is that the polymer is used for electrolytes.The so -called lithium -ion rechargeable battery is a liquid, and a lithium polymer is a quasi -individual.
The important thing about this topic is that the battery package has turned into a "resin film" like a retort food.In short, it's no longer the form of a "battery" we envision.
This greatly changed the characteristics of the battery.
The biggest thing is that it has become possible to "increase the capacity to the last minute according to the internal design of the device".In the current digital device, although there are some standard products, most devices use battery packs that match the internal design and size.
The following photo is a quote from the iPhone 12 battery replacement method introduced by IFixit, which is known for the immediate decomposition articles of Apple products, etc., but the battery occupies most of the body size, and the space around it.You can see that there is almost no.
iFixitが公開している「iPhone 12のバッテリー交換法」から、iPhoneの中身が分かる写真を引用。空いたスペースなどほとんどなく、巨大なバッテリーで占められているのが分かるAs a result, the current equipment has achieved performance improvement, maintaining operating time, and "smaller and thinning".It is convenient to seal the inside of the main unit and realize waterproof and dustproof.
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