Why is my lithium battery swollen?

Lithium batteries are vulnerable to high temperatures and prolonged use, these factors usually lead to an increase in the rate of degradation. A swollen battery is the peak of a faulty battery as it signals an end in its life cycle, so although it is dangerous, a battery swelling is not out of the ordinary.

Is a bulging battery a bad thing?

Beware the Bulging Battery! (And What to Do If Yours Expands) We’ve been seeing a spate of bulging batteries of late, both in Mac laptops and iPhones. A bulging battery is a Very Bad Thing and must be dealt with immediately because it could catch fire or even explode.

What causes lithium plating on a battery?

These are known as side reactions. Extreme temperatures: Exposing a battery to high temperatures, especially during the charging process, can lead to a phenomenon known as lithium plating. In a nutshell, it involves the collection of metallic lithium on the anode’s surface.

What is a lithium-ion battery?

From cell phones to electric vehicles, virtually all rechargeable devices in our lives have now transitioned to lithium-ion batteries. Unlike many alternative battery technologies, lithium-ion can store tremendous amounts of energy in a compact footprint.

How does charging and discharging affect lithium-ion battery degradation?

The cycle of charging and discharging plays a large role in lithium-ion battery degradation, since the act of charging and discharging accelerates SEI growth and LLI beyond the rate at which it would occur in a cell that only experiences calendar aging. This is called cycling-based degradation.

Why do lithium ion batteries have Sei?

This SEI is essential to the operation of a lithium-ion battery and can be considered analogous to the oxide layer that forms on aluminium, allowing a highly reactive metal to exist in air, which is a highly oxidising environment.