any time. The number of such batteries depends upon the size of
the business. 25 batteries for each 1000 cars in the territory served
is a good average. Do not have too many rental batteries of the same
type. Many of them will be idle most of the time and thus will not
bring in any money. Rentals should be made to fit those makes of cars
of which there are the greatest number in the territory served by the
repair shop. Sufficient parts should be kept on hand to make up other
rentals on short notice.

Terminals for Rental Batteries

There are several combination terminals on the market which allow
rental batteries equipped with them to be easily connected to several
of the various types of cable terminals that are in use. Yet it is a
universal experience for the average service station always to have
calls for rental batteries with just the type of terminals which are
not on hand. When the station has many batteries with the clamp type
straight posts the call always seems to be for the taper plug type and
vice versa.

[Fig. 152 Best type of connection to be used whenever possible]

Most of us will agree that the clamp type post terminal is the cause
of much trouble. It is almost impossible to prevent corrosion at the
positive post and many a car owner has found that this has been his
trouble when his lights burn all right but the battery seemingly does
not have power enough to turn over the engine and yet every cell tests
1.280. Service Station men should not scrape and clean up a corroded
clamp type terminal and put it back on again, but should cut it off
and put on either a taper plug or, preferably, a lead-plated copper
terminal lug. Of course either of these terminal connections
necessitates changing the battery terminals to correspond.

For rental batteries it will be found that short cable terminals with
lead-plated copper lugs at the end will enable a battery man to
connect most any type of cable terminal on any car. It is true that
such connections must be taped up, but the prompt service rendered
more than offsets a little tape. Figures 152 to 158 illustrate how
these connections can be made to the taper plug and clamp types which
are used on most cars.

[Fig. 153 Method of connecting rental battery with cable
terminals to car with taper plug]

[Fig. 154 Another method of connecting copper terminal
lug to clamp terminal on car]

[Fig. 155 Method of connecting rental batteries with