battery: a container consisting of one or more cells, in which chemical energy is converted into electricity and used as a source of power.
Part of speech: noun: battery power
Candle: a cylinder or block of wax or tallow with a central wick that is lit to produce light as it burns.
Part of speech: noun: In the past the people used candles
compass: an instrument containing a magnetized pointer which shows the direction of magnetic north and bearings from it.
Part of speech: noun: walkers should be equipped with a map and compass