Don't keep charging the battery after the hydrometer shows that the specific gravity is 1.285.
Don't let the storage battery freeze.
Don't let it stand for longer than a month without using unless you charge it.
Don't monkey with the storage battery except to add a little sulphuric acid to the electrolyte from time to time. If anything goes wrong with it better take it to a service station and let the expert do it.
EXTRA DON'TS
Don't think you have an up-to-date transmitting station unless you are using C.W.
Don't use a wire from your lightning switch down to the outside ground that is smaller than No. 4.
Don't try to operate your spark coil with 110-volt direct lighting current without connecting in a rheostat.
Don't try to operate your spark coil with 110-volt alternating lighting current without connecting in an electrolytic interrupter.
Don't try to operate an alternating current power transformer with 110-volt direct current without connecting in an electrolytic interruptor.