Section 5. Troubleshooting Model 8210/8250 Maintenance Manual
Lithium-ion Battery Troubleshooting
5-26 Publication: 1146945/001, Revised: 25 Sep 2018
Lithium-ion Battery
Troubleshooting
If you have a problem with the lithium-ion
battery on your Model 8250 lift truck, use the
table below to decide what to do. Do not try to
service this lift truck unless you are properly
trained and authorized to do so. Contact your
Service Department or local authorized
Raymond Sales and Service Center.
Problem Procedure
The lithium-ion
battery does not
turn ON.
The battery connector might not be completely installed. Press the battery connector
firmly into the truck-side connector and verify a proper connection has been made.
The lithium-ion battery could be in one of its low-voltage modes. Press and hold the
Multi-function Button.
The lithium-ion battery display could be disconnected, which would remove the ability
to wake the system up using the Multi-function Button. Check the lithium-ion battery
display plug in the cubby to verify a proper connection.
The battery communication cable could be damaged. Inspect for any signs of
open/exposed conductors.
The Cell Module Assembly (CMA) could require service. A replacement CMA might be
necessary. Contact a service technician for further investigation.
The alarms on the
lithium-ion battery
are constant
A reoccurring fault might be present. Toggle the truck ON/OFF switch once to see if the
fault clears. Refer to the alarm patterns in Table 5-3 on page 27 to see what fault is
indicated. Verify that the lithium-ion battery is not in a high temperature environment.
No power is being
transferred between
the lithium-ion
battery and truck
Contactor could be open due to a temperature constraint. Let the lithium-ion battery
thermally equalize within the operating temperature range before attempting to drive or
charge again.
Contactor could be open due to a voltage constraint. Plug the lithium-ion battery into an
energized outlet to charge and perform active balancing on the cells to get the cells
within an appropriate voltage range.
Contactor could be open due to an overvoltage condition where hardware protection
activates. This will require a service technician to inspect.
One of the lithium-ion battery fuses could be blown. Contact a service technician for
further investigation.
Not as much energy
appears to be
available
Lithium-ion battery could be reaching the end of its life. Capacity starts to diminish
once the warranty conditions have been exceeded.
The lithium-ion battery could be cold. Internal heaters maintain a proper operating
temperature, but drain the battery if they are being heated from the battery instead of a
charging source.
The lithium-ion battery might not have completed a full charge routine. Allow the
lithium-ion battery to reach full charge when it is performing the charge routine.
The lithium-ion battery could be self-discharging due to damage. Contact a service
technician for further investigation.
Charging is taking
longer than
specified
The lithium-ion battery could be too warm to charge. Charging is not allowed at high
temperatures. Move the lithium-ion battery to a cooler area for charging.
The lithium-ion battery could be too cold to charge. Internal heaters will need to heat
the cells up to an appropriate charging temperature. If the internal heaters are activated
in the charge routine, energy is shared between the cells and the internal heaters in the
lithium-ion battery and slows down the charging process.
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