Skip to main content

 Telecommunications Object Thesaurus Term

Log in to add scope notes or new non-preferred terms.

secondary cell

secondary cells

Initial Reference:
Electricity in the Service of Man, by Wormell - 1897

Top term:

Broader term:

Narrower term(s):

Scope notes:
Unitary electrochemical source of electricity in which the current is produced by a reversible reaction. Such cells may be used and recharged. Typically, but not exclusively, of the lead/acid type. (For two or more 'cells' used together, see battery.)


Click here to return to thesaurus home page

fun and games

Can you beat our games? Explode equipment to see what's inside, hear the changing sounds of telecommunications, see how telecommunications designs have changed over time or send an e-postacard.

what's on

The UK's first permanent gallery dedicated to the history of information and communication technologies opens in the new Information Age gallery at London’s Science Museum.

audio history

Take a trip down memory lane with extracts of the interviews which have been recorded as part of the Connected Earth oral history programme.

featured story

100 years of automatic switching!
In 1912 the GPO installed Britain's first automatic telephone exchange in Epsom.

Discover the early days of the telephone...