Honda Pioneer 1000 2017 Owner's Manual page 224

Refer to Safety Precautions on page 123.
charger
Be sure to read the information that came with your battery charger
and follow the instructions on the battery. Improper charging may
damage the battery.
We recommend using a charger designed specifically for your
Honda, which can be purchased from your dealer. These units can
be left connected for long periods without risking damage to the
battery. However, do not intentionally leave the charger connected
longer than the time period recommended in the charger's
instructions.
Avoid using an automotive-type battery charger. An automotive
charger can overheat a Honda SXS battery and cause premature
damage.