(a) Describe an alkaline battery cell, listing the materials used in its manufacture. (6)

(b) With reference to alkaline batteries used on ships, state each of the following (10)

(i) Significance of the relative density reading of the electrolyte;

(ii) When the electrolyte would normally be renewed;

(iii) Reasons why the voltage reading of this type of battery is not necessarily indicative of its condition;

(iv) The normal temperature range and safe temperature limit of battery;

(v) Effects of high and low temperature.