Arizona republican., 1921-10-23
MOTORISTS DON' I
 STUDY STORAGE
 BATTERY ENOUGH

What do you know about your stor- age battery?
 At first glance this may seem an impertinent question, but there is no gainsaying the fact that there is widespread and very general lack of information upon the part of motor- ists concerning the construction, functions and care of this most inn portant unit of the automobile.
 The average life of a storage bat tery in actual service is said to be 15 months. It has been demonstrated time and time again, however, that this battery life can be increased to 20 or "A months. If this average could be increased by 30 per cent which would mean the bringing of the aver age length of service to 20 months in- stead of 15, it would mean an annual saving of millions of dollars to mot orists of this country.
 Every owner of an automobile should, for the sake of economy as well as of satisfaction, familiarize 1 himself thoroughly with every im- 1 portant feature of his storage bat l tery," says A. s. Earnhart of the i Battery Service company. local rep resentatives of the Prest Light com | pany.
 If automobile owners would learn more about their storage battery, they would appreciate more than they now l do the importance of taking frequent I advantage of the service offered by the modern storage battery service station.
 'The automobile storage battery is an electric chemical unit and in no sense does it store electricity, as many l people believe. The most important part of the storage battery is the i plate. These plates are made of a i lead composition and submerged in a solution of sulpheric acid, commonly known as electroylyte. Each battery has two distinct kinds of plates, known as positive and negative. The current leaves the battery by way of i the positive and returns through the negative.
 .The actual work of the storage . battery consists in the chemical ac- tion, which takes place between the acid solution and the material in the ' plates. This chemical action is con- tinually going on in the battery oven when it is not giving out current but when it is called upon to deliver power, the violence of the chemical action IS enormously increased. which results in the generation of the cleo
 
 This, in a few words. explains the 1 general action which takes place in a storage battery.
 "The modern storage battery should have frequent attention, as the maxi i mum life can be secured only through l giving it proper care. Practically all ] the difficulties which beset a storage battery may be prevented by our in- spectIon service, which should be made at least every 10 days. There is no doubt that the car owners who consistently take advantage of our battery service, and particularly those who carry Prest- Light equi pmant, are enjoying a storage battery life far in excess of the average Is months. No higher tribute could be paid to the Prest- O-Light storage
 battery than to call attention. to the
 fact that it is standard equipment or over 65 cars and trucks.
 ''Prest- O-Lite batteries, coupled with our service, represent a tre-
 mendous saving every year to mo-
 torists. This is one way, at least, in
 which every motorist can cut down
 his touring costs"