Coleman HS400UTV-2 Owner's Manual page 147

Battery
This vehicle is equipped with a sealed-type
battery. Therefore, it is not necessary to
check the electrolyte or add distilled water in
the battery. If the battery seems to have
discharged, consult a service center.
Periodic Maintenance and Adjustment
CAUTION:
Do not try to remove the sealing caps of the
battery cells. You may damage the battery.
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