For Samsung Galaxy S21 FE Replacement Battery 4500mAh

This is a replacement battery for the Samsung Galaxy S21 FE with a stated capacity of 4500mAh. It is designed to replace a worn, draining, or faulty internal battery — useful if your phone is losing charge quickly, shutting down unexpectedly, or struggling to hold power through the day.

A battery that drains quickly, will not hold a charge, or causes a phone to switch off unexpectedly is a common sign of a worn or ageing cell, and fitting a replacement of this type is a standard part of keeping an older handset in daily use. Compatibility for this listing is based on the model and code information supplied for the product, so it is worth checking your exact model before ordering if you are at all unsure.

• Samsung Galaxy S21 FE
• Check your model number before ordering: on the phone go to Settings › About phone.

• The battery drains much faster than it used to, even with light use.
• The phone shuts down unexpectedly while it still shows charge left.
• The device gets unusually hot while charging or during normal use.
• The back cover or screen is lifting or bulging — a sign of a swollen battery. Stop using the device and replace the battery.
• On iPhone, Settings › Battery › Battery Health shows reduced maximum capacity or a service message.

On the phone or tablet go to Settings › About phone (or About tablet). The model number starts with SM- (for example SM-A145R). It is also printed on the box the phone came in.