| 摘要 |
<p>An electric battery is described comprising a container into which the electric elements are arranged, and on the upper lid of which a hermetically closed housing is located. The housing contains a plurality of interconnected electronic components, forming a voltage comparator which compares a fixed and stable voltage produced from the battery with another voltage proportional to that of the battery, signalling by means of a red light the condition of a low charge or by means of a green light the good condition of the charge, the unit of the circuit being supplied from the terminals of the battery through a push button actuatable for checking purposes.</p> |
