nto service, just as automobile batteries which are shipped
"wet" are in a fully charged condition when they leave the factory and
need only a charge before being installed on the car.

[Fig. 295 Prest-O-Lite farm lighting cell with lead-antimony
cover]

Jars that are not sealed are set in separate glass trays filled with
sand, or sometimes the entire battery is set in a shallow wooden box
or tray filled with sand. This is necessary because the absence of a
sealed cover allows acid spray to run down the outside of the jar and
this acid would, of course, attack the wooden shelf and make a dirty,
sloppy battery. Batteries using jars without sealed covers cannot be
shipped assembled and charged, and hence they require a considerable
amount of work and along initial charge to put them in a serviceable
condition.

[Fig. 296 Exide farm lighting cell with sealed glass jar]

Farm lighting battery jars are less liable to become cracked than
those of automobile batteries because they are set in one place and
remain there, and are not jolted about as automobile batteries are.
Cracked jars in farm lighting batteries are more easily detected as
the jar will be wet on the outside and the acid will wet the shelf or
sand tray on which the jar rests.

Batteries with sealed rubber jars are normally assembled four cells in
a case or tray, with a nameplate on each tray which gives the type and
size of cell. The cells are connected together with lead links which
are bolted to the cell posts by means of lead covered bolt connectors.

[Fig. 297 Combination wood and rubber separator used in
Delco-Light and Exide Farm light cell]

Plates. Since farm lighting batteries are not required to deliver very
heavy currents at any time, the plates are made thicker than in
starting batteries, this giving a stronger plate which has a longer
life than the starting battery plate.

All makes of starting batteries use the Faure, or pasted plate. This
type of plate is also used in many farm lighting batteries, but the
Plante plate (see page 27) may also be used. The Exide "Chloride
Accumulator" cell, Fig. 323 uses a type of positive plate called the
"Manchester" positive as described on page 497.

Separators. Grooved wooden separators are used in some farm lighting
batteries, while others use rubber separators, or both rubber and
wooden separators. Some use wooden separators which are smooth on both
sides, but have dowels pinned to them.