Battery Charging; Battery Cell Equalization; Figure 3-8: Battery Charger Outlet - Upright TM12 Service & Parts Manual

Maintenance
Charge the battery only in a well ventilated area. Do not charge the battery
when the work platform is in an area containing sparks or flames.
Permanent damage will result if the battery is not immediately recharged
after discharging. Never leave the charger unattended for more than two
days. Never disconnect the cables from the battery when the charger is
operating. Keep the charger dry.
Page 3-8
B C
ATTERY HARGING
Charge batteries at end of each work shift or sooner if batteries have been discharged.
NOTE: If voltage falls below 17 volts (for a 24 volt system), the charger will not recharge the batteries. If
this extreme voltage drop occurs, disconnect and recharge each battery separately using a 6 volt
charger to bring the voltage up to at least 4½ volts.
W A R N I N G
!
NOTE: Do not operate machine when battery charger is plugged in.
When night air temperatures fall below 18°C (65°F), batteries charged in unheated areas should
be placed on charger as soon after use as possible. Under such conditions a 4 hour equalize
charge once a week in the early afternoon will improve state of charge and battery life.
1. Check battery fluid level. If electrolyte level
is lower than 10 mm (3/8 in.) above plates
add distilled water only.
2. The outlet plug for the battery charger is
located in the left chassis door. Connect
extension cord (12 gauge conductor mini-
mum and 15 m (50 ft.) in length maximum)
to the charger plug. Connect other end of
extension cord to properly grounded outlet
of proper voltage and frequency.
3. Charger turns on automatically after a
short delay, the LED charge indicator will
illuminate.
4. Charger turns off automatically when bat-
teries are fully charged, the LED charge
indicator will blink.
B C E
ATTERY ELL
The specific gravity of the electrolyte in the bat-
tery cells should be equalized monthly. To do
this, charge batteries as outlined in Battery
Charging. After this initial charge, check the
electrolyte level in all cells and add distilled
water as necessary. Then, turn the charger on
for an additional eight hours. During this time,
the charging current will be low (four amps) as
cells are equalizing.
After equalization, the specific gravity of all cells should be checked with a hydrometer. The tem-
perature corrected specific gravity in this state should be 1.260. If any corrected readings are
below 1.230, the batteries containing such cells should be replaced.
Do not check the specific gravity in a cell to which water has just been added. If there is not
enough electrolyte in a fully charged cell to obtain a sample for the hydrometer, add water and
continue charging for one to two hours to adequately mix the water and electrolyte.
!
QUALIZATION
3.8 - Battery Maintenance

Figure 3-8: Battery Charger Outlet

Charger Outlet
Left Side, Cover Installed
Charger
Left Side, Cover Removed
TM12 Work Platform - European