Lithium-Ion Battery; Charging Lithium-Ion Battery; Troubleshooting Charger; Knowing When Battery Is Fully Charged - Yale 524150797 Maintenance Manual

8000 YRM 1666
Always use a hydrometer to check the battery if the
battery is charged at regular intervals. Frequent
charging of a battery that has a 2/3 or more charge
can decrease the life of the battery.

Lithium-Ion Battery

If your lift truck is equipped with a lithium-ion battery,
see sections below and LITHIUM-ION BATTERY
2240YRM1890 for battery specifications, maintenance,
charging and troubleshooting procedures.
The lithium-ion battery is programmed to conserve
power during long periods of inactivity. For batteyr
serial numbers from 100-2499, the Sleep Mode will
initiate after five days in which less than 200mA has
been applied. For battery serial numbers 2500 and
higher, Sleep Mode will initiate after 4 hours in which
less than 1000mA is applied.

Charging Lithium-Ion Battery

WARNING
Disconnect the battery when doing cleaning and
maintenance.
If the lift truck can be operated with a low battery,
check the contactors for welded contacts before a
charged battery is connected. The circuit will not
reset and lift truck operation cannot be controlled
if the contacts are welded. To check the contacts,
see the Contactor Inspection procedure for your
lift truck.
CAUTION
Use only battery chargers approved by the battery
manufacturer or dealer.
CAUTION
NEVER connect the battery charger plug to the
plug of the lift truck. You can damage the traction
control circuit. Make sure the charger voltage is
the correct voltage for the battery.

Troubleshooting Charger

Battery chargers normally operator automatically
without constant attention. It is necessary to make a
periodic check that the charger is operating correctly.
Refer to Step 2.

Knowing When Battery Is Fully Charged

WARNING
Always connect the positive cable to the positive
terminal and connect the negative cable to the
negative terminal. Any other connection will cause
injury and damage.
NEVER connect the battery charger plug to the
plug of the lift truck. You can damage the traction
control circuit. Make sure the charger voltage is
the correct voltage for the battery.
1. The battery charger will indicate charge is
complete by illuminating the Green Charged
LED.
2. If the battery charger is OFF, wake-up battery and
measure the voltage across terminals. If voltage
is about 24 Vdc, the battery is at or near full
charge.

Where to Charge Batteries

As Lithium-Ion batteries are kept with the vehicle,
unless servicing, all charging is done using the on-
board charger. The vehicle should be stored in a
location within charging temperature
0 to 45°°C (32 to 113°°F). The AC Power should be
per code standards and properly fused.

Lithium-Ion Battery Care

1. Keep batteries clean.
2. DO NOT overcharge the battery. Use a battery
charger that is correct for your battery. A charger
set for an ampere-hour rate too high will cause a
high interval heat and damage the battery. A low
ampere-hour rate setting on a battery charger can
require a longer charging time but will no damage
the battery.
3. DO NOT discharge the battery to less than the
manufacturer's recommendations. If the battery is
allowed to discharge too far, it may enter
hibernating mode and require service to recharge
or restart.
4. Prevent batteries from freezing.
5. Keep batteries charged. A discharged battery in
storage will shorten the battery life.
Battery Maintenance
17