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Why Most Smartphones Don't Have Removable Batteries Anymore


Up until the early 2010s, it was normal for phones to have removable batteries. However, as the iPhone with its non-removable battery became more popular, more and more manufacturers followed suit.

Eventually, even laptop manufacturers stopped making removable battery devices. But why is this so? And is this a good thing for us consumers? Let's investigate below.

Why Non-Removable Batteries Became Necessary

As consumers demanded more sophisticated smartphones, manufacturers had no choice but to make sacrifices to comply with the latest trends. That's because these light and slim all-screen designs became sales hits, allowing companies to make more money for their investors.

Let's look at some of the features smartphones now integrate which necessitated the non-removable battery.

Lighter and Slimmer Designs

Despite all the development in battery technology, batteries are still inherently dangerous. That's because they store energy between cathode and anode electrodes, separated by a thin electrolyte.

If these electrodes somehow come into direct contact, it would cause a short circuit and generate a lot of heat. This condition, in turn, would create even more heat leading to a runaway thermal reaction and could result in the battery bursting into flames or exploding.

For this reason, a removable battery needs a hard plastic case to prevent accidental damage, especially when it's not connected to a phone. This kind of case adds to the bulk and weight of a smartphone. So, when consumers wanted a slimmer, lighter design, one of the solutions engineers came up with was to install a permanent battery.