Exide Technologies Section 92.30 - Manual (Page 9)

7.4 CONNECTIONS
Battery terminal and intercell connections should be corrosion free and tight for trouble-free opera-
tion. Periodically these connections should be inspected to ensure cleanliness and integrity.
If corrosion is present, disconnect the connector from the terminal. Gently clean the affected area using a
brass suede brush or 3M Scotch Brite scouring pad, being careful not to remove lead plating from interunit
connectors. Apply a thin coat of NO-OX-ID grease to the cleaned contact surfaces. Re-install connectors
and retorque connections.
It is recommended that all terminals and intercell connections should be retorqued at least once
every year, per specifications shown on battery label.
Maintaining electrical integrity of connectors is important, since poor connections will result in
reduced battery output and, in extreme cases, may add to heating and could result in melted battery
posts, circuit interruptions, or battery fires.
7.5 CONNECTION CHECK
Visually check to see that all units are connected positive (+) to negative (-) throughout the battery
string.
Measure the total open circuit voltage from positive string termination to negative string termination. The
open circuit battery system voltage should be approximately 2.13 volts per cell multiplied by the number
of cells per unit, multiplied by the number of units in series. If the total is less than this value by more
than 10-12 volts, the possibility exists that one or more units may be incorrectly connected and all con-
nections should be rechecked.
Example A 24 cell (48 V nominal) battery system should have
an open circuit voltage of 2.13 x 24 = 51.12 VDC.
A 12 cell (24 V nominal) battery system should have
an open circuit voltage of 2.13 x 12 = 25.56 VDC.
Calculations for other configurations such as 60 cell, 180 cell, 240 cell, etc. follow the same proce-
dure.
7.6 BATTERY TO CHARGER CONNECTION
The positive (+) terminal of the battery should be connected to the positive (+) terminal of the charger
and the negative (-) terminal of the battery to the negative (-) terminal of the charger. A terminal plate
kit should be utilized when connecting multiple cables to a battery terminal post.
CAUTION
DO NOT WORK ON CONNECTIONS WITH BATTERY
CONNECTED TO CHARGER OR LOAD
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