RADIO WET A BATTERIES

Radio Record, Volume I, Issue 43, 11 May 1928, Page 3

RADIO WET A BATTERIES

VOLTS AND AMPERES. While there are exceptions, the standard type of "A" battery is that known as the "wet" or ‘"storage’’ type. These vary little from those used as starting and lichting batteries in motor-cars, except, in general, the plates comprising them are not as thick or rueged as those designed for. motor-cats, , Their voltage should never exceed 6.7 volts, and probably the most popu — lar capacities are the 100 or 120 ampere hour batteries. ‘A’? batteries do not require a high voltage output, but do reauire a current (amperes) value capable of supplving around two to three amperes of current ner hour for the operation of the receiver The 100 ampere hour size has thus become popular for multi-valve sets because it will supply that average radio receiver with current for a period of ahont two weeks before requirine rechareing. This period is not defin ite, but rather an averace, it being essential that until one has determined from freouent tests the approx*mate feriod ‘when the "A" battery needs recharging, that a free use of a battery "livdrometer’ he made, |