TrustFire 18650 Li-ion Rechargeable Battery 3.7V 3600mAh Red

Battery - A device used for the storage of electricity

MP3 - MPEG-1 Audio Layer 3 - A lossy compression format for audio

Red - One of the three primary colours

weight - A measure of the force applied on an object by gravity. Measured metric in grams and kilos or imperial in lbs and oz

Weight - a measurement of how heavy an object appears due to the pull of gravity. For example the weight of an object on planet earth will be different to the weight of the object on the moon

MP3 - a type of digital music file. Popular due to its small file size

Memory - A way to describe the way in which the brain can remember things.

Rechargeable - Something that can be charged back to its original state, e.g. batteries.

Li-ion - A rechargable battery. Popular in portable electronics combining one of the best energy densities and not suffering memory effect. Very slow loss of charge when not in use.

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