TrustFire Protected 18650 2500mAh 3.7V Batteries -Blue (2-Pack)

Digital - A system that uses only 0s and 1s to transmit data

Blue - A primary colour

Heat - A term used to define thermal energy

Cm - Centimetres, one centimetre is equal to 10 milimetres

Batteries - Portable Power sources in cell form

Precise - A measurement on the accuracy of something

Voltage - A measurement of volts.

MiniInTheBox is an innovative online retailer selling quality consumer goods at wholesale prices. The company aims to make the best Chinese-made products widely accessible to all without customers having to pay the high prices in their area. They also aim to introduce customers to exciting new products that may not be available from their local retailer or wholesaler. MiniInTheBox currently has customers in over 50 countries. A wide range of products, including thousands of electrical items, gadgets, gifts and accessories, are sourced directly from the manufacturer so costs are kept as low as possible. Meanwhile MiniInTheBox is committed to maintaining high standards, excellent customer service (24 hr support on weekdays) and quick delivery. Delivery is free of charge worldwide with no minimum order requirement and no hidden fees. Paypal is accepted as well as major credit and debit cards.