Show RADIO STORAGE BATTERIES storage batteries for radio use are available to the public in many forms and sizes and among the large variety every radio owner will find exactly the one to supply his particular needs in deciding the problem of the right battery the recommendations of the set maker are invaluable as to correct voltages As to ampere hour capacity that is entirely up to the set owner and his pocketbook ampere hour capacity is the electrical measure of the life of the battery on a single charge it means that the battery will deliver one ampere an hour for as many hours as its rated capacity in this way a ampere hour 0 6 volt A battery will deliver 6 volts for hours at the rate of 1 ampere an hour or it will deliver 6 volts for hours at yi 32 an ampere an hour in this way the approximate life of a single charge can be estimated by adding up the current pull of the tubes used if four UV A tubes are used the current pull will be I 1 ampere an hour as each tube draws 25 amperes if two UV A tubes are used in connection with alev tube the current pull will be 15 amperes an hour as the UV tube draws I 1 ampere an hour and the two UV tubes draw 25 each when the combined current pull of the tubes is calculated divide the ampere hour capacity of the battery by this number and you have the approximate number of hours your battery will operate on a single charge contrary to common belief storage batteries do not store up electricity nor do they produce it A storage battery in its commonest form is a lead acid combination and its action is is entirely chemical and productive of electrical energy when a storage battery is in use the chemicals in the battery solution are combining with the lead in the plates this causes electrical energy to flow from the battery when the battery is being recharged this chemical action is in tho the opposite direction the current being passed into the battery drives the chemicals back into arfe alution ol ution |