Jargon Buster
Plain English meaning, where you may see it, and what to read next if this word still feels unfamiliar.
Quick meaning
The power source for a mobile device.
Think of it like this
Like the fuel tank of a car.
Where you may see this
You may hear this when buying a device, asking for repairs, or checking phone and computer settings.
Why it matters
Understanding the hardware term helps you choose the right device and explain problems more clearly when asking for help.
Say it simply
Battery means: The power source for a mobile device.
Keep going
Directly related
More in Devices & Hardware
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Action Button
A customisable physical button on newer iPhones that can be set to perform a chosen function with one press.
Aeroplane Mode
A setting that disables all wireless connections — calls, data, Wi-Fi, and Bluetooth — while keeping the device on.
Ambient Light Sensor
A sensor in your phone that detects the brightness of your surroundings and adjusts screen brightness automatically.
BIOS
The first programme that runs when a computer starts, before the operating system loads.
Bluetooth
A wireless way for devices to communicate nearby.
More B terms
Bandwidth
The amount of data that can travel through your internet connection at one time.
Bank Transfer
Moving money from one bank account to another electronically.
BCC (Blind Carbon Copy)
Sending a copy of an email to someone without the other recipients knowing.
Beta Version
An early release of an app or software that is still being tested and may have bugs.
Biometrics
Using unique physical characteristics — like your fingerprint, face, or iris — to verify your identity.
BIOS
The first programme that runs when a computer starts, before the operating system loads.