Testing; Specific Gravity; Storing; Storage - Taylor-Dunn B0-248-36 Service Replacement Parts

Batteries

TESTING

WARNING
This section is one section of a complete service
manual. Before starting any procedure, read all
warnings and instructions that are located in the
Service Guidelines chapter.

Specific Gravity

Note: The battery must be fully charged before
performing this test.
The specific gravity of a cell is an indication of the actual
state of charge of the cell. A fully charged cell should have
a reading of 1275 to 1300 (see the illustration below). A
discharged cell will read 1100. Ideally, all cells in a battery
will have the same reading. Any cells in a battery that
vary by more than 25 points may be an indication of a
bad or weak cell.
Clean the battery. Refer to Cleaning section for
information on cleaning the battery.
Using part number 77-200-00 hydrometer or equivalent
graduated type hydrometer, test and record the specific
gravity of each cell in the battery.
Use the highest reading to compare to all other cells. Any
cell or cells that are more than 25 points less than the
highest reading should be suspected as being a bad cell.
If, after charging, none of the cells exceed a hydrometer
reading of 1250 then there may be a fault in the charging
system. If the charging system checks OK then the
battery pack is no longer accepting a charge and should
be replaced.
It may be possible to replace Individual cells in industrial
batteries. Contact the battery manufacturer for details.
Typical
Hydrometer
Float
Page 80
B0-248; B0-254; BT-248; BT-280 (36v & 48v)

STORING

WARNING
This section is one section of a complete service
manual. Before starting any procedure, read all
warnings and instructions that are located in the
Service Guidelines chapter.
NOTICE
DO NOT attempt the test the specific gravity of
a sealed battery. Removing the caps of a sealed
battery will damage the battery resulting in
premature failure.

Storage

Thoroughly clean the battery and battery compartment.
Refer to Cleaning in this section for information
regarding cleaning the battery.
Check the electrolyte level and charge the battery.
Refer to Watering in this section for information
regarding checking the electrolyte level.
Store the vehicle or battery (if removed) in a cool, dry,
well ventilated area.
If storing for more than one month, the battery should
be charged per the table below.

Returning to Service

Thoroughly clean the battery and battery compartment.
Refer to Cleaning in this chapter for information
regarding cleaning the battery.
Check the electrolyte level and charge the battery.
Refer to Watering in this chapter for information
regarding checking the electrolyte level.
Test the battery. Refer to Testing section for information
on testing the battery.
The battery is now ready to be put back into service.
Storage
Temperature
(F)
Over 60
Between 40 and 60
Below 40
Charging
Interval
(months)
1
2
6
MB-248-18