PRESTO OWNER’S MANUAL
Page 12
POWER STAK
S E C T I O N 5
BATTERY MAINTENANCE
A. PREPARING TO CHARGE A BATTERY
1. Always turn off E-stop and key switch before working
with the batteries.
2. Be sure the area around the stacker and the battery is
well ventilated while battery is being charged.
3. The battery terminals, connections and wiring connec-
tions should be clean and free of corrosion. When clean-
ing any of these components wear a face shield or other
suitable protective eyewear.
B. BATTERY CHARGING
Charging must be performed with the charger that is provided
with or prewired into the machine. During charging, the
temperature in the battery must not exceed 120 F. Charging
simultaneously with truck operation is not recommended.
Plug the charger into a 115 volt outlet. Charge until the bat-
tery gauge indicator lights show fully charged (approximately
6-8 hours).
C. WARNINGS AND BATTERY INFORMATION
Avoid use of open flame near batteries. At temperatures
around freezing point, battery capacity is reduced by 30%.
The battery terminals, connections and wiring should be
clean and free of corrosion. When cleaning any of these
components, wear a face shield or other suitable protective
eyewear. Read, understand, and follow all battery and bat-
tery manufacturer's specific precautions
while working with
and/or charging batteries.
D. BATTERY MAINTENANCE
To measure the voltage, use a digital voltmeter (DC) on the
battery poles. The truck must not have been in use for the
previous 30 minutes.
DANGER
Never alter the AC cord or plug provided. If it will not
fit outlet, have proper outlet installed by a qualified elec
-
trician. Improper connection can result in a risk of an
electric shock.
1. Disconnect the charger from the 115 volt wall outlet
once the indicators read fully charged.
E. CHARGER OPERATION
LED Instruction:
Red light on: Charge error (Voltage <11V)
Red flashing light: Battery reversed polarity
Yellow flashing light: No battery connected
Yellow light on: Normal charging
Green flashing light: 80% charged
Green light on: Fully charged
VOLTAGE
Approx. 12.7 V
Fully charged
Approx. 12.2 V
1/2 charged
Approx. 12.0 V
1/4 charged
Approx. 11.6 V
Discharged
Battery Discharge Indicator (BDI) Operation
Here, second from left LED
blinks indicating reserved
power is above 70%
At this point we recommend
charging the system
Two leftmost LEDs blinking
indicate
EMPTY
RECOMMEND charging the system BEFORE the
BDI indicates EMPTY IN ORDER TO EXTEND
BATTERY LIFE
