You will need a smaller battery charger and u can access the battery posts on each side.(- on leftside of bike just above the rectifier) (+ is under small plastic cover just under swing arm on right side of bike)
it (assuming it is a VS800) is in a trap door under the bike between the frame.
disconnect the negative lug (left side) then the positive (right side) (this will be a small slotted screw viewable...
On the back right side pop the passenger foot peg down and insert the key into the slot. Turn the key to pop off the seat and then remove the insert under the seat. The battery is under that.
To change the battery on a Suzuki 800 Intruder remove both the positive and the negative cables from the top of the battery. The batttery and battery box is located low, between the rear wheel, and...