71
T7AMR 9018134 (12-2021)
MAINTENANCE
LITHIUM-ION BATTERY
The lithium−ion battery is a maintenance−free
battery protected by a battery management system
(BMS). To achieve the maximum battery life,
carefully follow the instructions below:
– Lithium-Ion batteries must be charged prior to
initial use.
– Carefully follow the Important Safety
Instructions section in the manual when using
the Lithium−ion Battery Model.
–
Only use the lithium−ion battery charger
supplied with machine.
–
Charge battery pack in well−ventilated areas.
For best charging performance, charge
the battery pack in temperatures below
104
°
F/40
°
C and above 32
°
F/0
°
C. Battery
pack may shut down and not take a charge in
elevated or freezing temperatures.
– It is recommended to only recharge battery
pack when discharge indicator level reaches
the last bar. Do not store the machine for an
extended period if battery is discharged to the
last bar, the battery may further discharge to a
level that is unrecoverable.
– Allow charge cycle to completely charge
battery pack.
– Opportunity charging (i.e. partial charge cycle
of a half hour or more) is only recommended if
discharge level is below 80%.
–
Do not operate machine in temperatures above
131
°
F / 55
°
C or below −4
°
F / −20
°
C. Machine
may shutdown if exceed these temperatures.
–
Contact Tennant Service for lithium−ion battery
service and replacement.
BATTERY POWER BUTTON / BATTERY
DISCHARGE INDICATOR
Each lithuim-ion battery contains a power button
to turn off the battery power supply. The battery
discharge indicator (BDI) display the current state
of the battery.
Press and hold the battery power button for 20
seconds to turn off the battery power. The battery
discharge indicators will turn off.
Quickly press the battery power button to turn on
the battery power. The battery discharge indicators
will illuminate when turned on.
The battery discharge indicator displays the
charge level of the batteries. When the batteries
are fully charged, all five indicators are lit. As the
battery discharges, the indicator levels decreases.
If the indicator flashes red the battery has a fault.
Contact Tennant Service to fix the fault.