Honda FourTrax Foreman Rubicon TRX500FA5 2019 Owner's Manual page 206

Battery
The battery is located in a compartment under the rear fender cover.
UNDER REAR FENDER COVER
(1) rubber band
(2) negative (–) terminal lead
(3) battery
Removal
1. Make sure the ignition switch is OFF (w).
2. Remove the seat (page 130).
3. Remove the rear fender cover (page 131).
4. Release the rings and remove the rubber band (1).
5. Disconnect the negative (–) terminal lead (2) from the battery (3)
first, then disconnect the positive (+) terminal lead (4).
6. Remove the battery taking care not to drop the terminal nuts (5).
196 Servicing Your Honda
(1)
(3) (4)
(2)
(4) positive (+) terminal lead
(5) terminal nuts
(5)