battery facts

What device, composed of electrochemical cells, provides power to electrical devices through a positive cathode and a negative anode?

A battery

What are the two main categories for batteries based on their usage lifespan?

Disposable single and rechargeable multiple.

Who is credited with inventing the electrochemical battery in 1800?

Alessandro Volta

What is the etymological origin of the word "battery" when used for the power source device?

It is borrowed from the military term for a group of weapons working together.

What type of electrical current (AC or DC) does a standard battery provide?

Direct current

What fundamental process creates the power inside a battery?

Chemistry

Name six different chemical

compositions or technologies that can be used to make batteries.

What does NiMH stand for, and what is a common use for these batteries?

Nickel-Metal Hydride; they are commonly used in portable electronics like toys and cordless phones.

What are two common voltage ratings for alkaline batteries, and name two devices that often use them?

1.5 volts and 9 volts; they are used in devices like flashlights, toys, cordless phones, and calculators.

What are the characteristics (light weight and high current output) and a common application for Lithium-Polymer (Li-Po) batteries?

They are lightweight and have high current output; commonly used for remote control vehicles.