How to Change the Battery on Bikes

by Contributing Writer; Updated June 12, 2017

Just as with any other vehicle, the time will come when the battery has to be changed. The procedure is simple, but be sure to use the proper safety measures to avoid harm. The placement can be a bit hard to find and without a few pointers may seem difficult to remove.

Under The Hood:

 How to Change the Battery in My 150CC Vespa Scooter

Purchase the appropriate replacement battery for your Vespa scooter. Check with the dealer if you are not sure. Ask the dealer to "wet down" and charge the battery for you. This involves adding the battery acid and water.

Take the battery home in its box and unpack it where you will work on your scooter. Attach the drain hose to the side of the battery. Put the battery aside. Locate the hardware for the new battery terminals and place it next to the battery.

Remove your Vespa scooter's sidepanel from the the left side of the scooter, where the battery sits. Use a socket wrench to remove the spare tire as well for more work space if needed. Detach by hand the retaining strap on the old battery.

Use a screwdriver and crescent wrench to disconnect your old battery's red and black wires, starting with the red wire. Remove the battery and place it aside where it won't get kicked over. Be careful not to spill any of the battery acid on your skin or clothes.

Pick up the new battery and sit it snugly into the battery holder tray on the scooter. Pull the retaining rubber strap from the bottom tray hook upwards to the top hook to secure the battery. Use a screwdriver and crescent wrench to connect the hardware, terminals and wiring for the new battery, starting with the black wire.

Check the fuse next to the battery to confirm that it is not burned out. Put the scooter key in the ignition and turn it to the "On" position without starting the engine. Test your turn signal lights and brake lights. Reinstall the spare tire with the socket wrench. Close up the scooter sidepanel and take the scooter for a test ride.

Items you will need

  • Crescent wrench

  • Screwdriver

  • Socket wrench and sockets

 How to Change the Battery on a Yamaha

Cruiser

Remove the seat from your motorcycle. Turn the key to the "On" position and hold it there as you lift up on the seat to unlock it.

Put on the gloves and the safety glasses. Remove the plastic cover on the battery compartment.

Detach the cables connected to the terminals on the top of the battery. You can pull the cables off by hand. Remove the negative (black) cable first, then the positive (red) cable. Cover the negative battery terminal with black electrical tape.

Lift the battery out of the compartment. Be sure not to touch the terminals to any metal components of the frame or the seat.

Position the new battery. Connect the positive cable to the battery first, then the negative cable.

Reattach the seat.

Street Bike

Lift or remove the seat on your bike. Use the ignition key to unlock the mechanism holding the seat in place. Depending on the model, tilt the seat back or lift it completely off the bike.

Locate the two anchor bolts on either side of the gas tank. Unscrew the bolts using an Allen wrench. Hold on to both the bolts and the bushings on the underside of the bolts. The bushings prevent your gas tank from rattling during operation.

Tilt your gas tank up to reveal the battery compartment. It is necessary to prop up the gas tank or have a helper hold it for you as you work on the battery.

Detach the cables connected to the battery terminals. Remove the negative (black) cable first, then the positive (red) cable. Cover the negative battery terminal with black electrical tape.

Lift the battery out of the bike, being careful not to touch the terminals to any part of the motorcycle or your skin.

Position the new battery in the bike. Connect the positive cable to the battery first, then the negative cable.

Reposition the gas tank and secure it by tightening the bolts.

Close or reattach the seat.

Items you will need

  • Gloves

  • Safety glasses

  • Black electrical tape

  • Allen wrench

 How to Change the Battery on a Yamaha VStar 650

Locate the battery compartment on the left side of your VStar. The compartment’s lid is flush with the surrounding mechanics, so it is easiest to identify by looking for a small square-shaped compartment lid with a small hexagonal hole on the lower left side of the lid.

Unscrew the bolt holding the battery compartment lid in place with an appropriately sized Allen wrench key and remove the lid.

Remove the plastic part holding the battery in place by pulling or prying the rubber strap attaching the bottom piece to the interior of the battery compartment.

Pull the battery from the compartment, being careful not to accidentally yank the wires connected to the terminal connection points prematurely.

Disconnect the negative — black — wire attached to the negative terminal connection point and then disconnect the positive — red — wire attached to the positive terminal connection point.

Connect the positive wire to the positive terminal connection point of your new battery and then connect the negative wire to the negative terminal connection point.

Insert and secure the new battery in the battery compartment with the plastic piece attached to the interior of the battery compartment.

Replace and reattach the lid of the battery compartment, using your Allen key wrench.

Items you will need

  • Allen key wrench

  • Gloves

  • Goggles

 How to Replace a Battery on a Yamaha Grizzly 660

Pull up on the seat's lock lever and then pull up on the rear of the seat to remove it from the ATV. Remove the two bolts securing the battery retaining bracket using a wrench.

Remove the screw securing the battery lead cover using a Phillips screwdriver. Remove the negative battery lead with a wrench. Lift the ring connector away from the battery. Remove the positive battery lead with a wrench. Move the ring connector away from the battery.

Lift the old battery out of the battery tray. Insert the new battery with the same post alignment as the one you removed had. Replace the positive battery lead and secure the bolt with a wrench. Replace the negative battery lead and secure the bolt with a wrench.

Replace the battery lead cover and screw. Tighten the mounting screw with a Phillips screwdriver. Replace the retaining bracket and secure it with the two bolts. Tighten the bolts with a wrench. Torque the bolts to 5 pound-feet with a torque wrench.

Push the seat into position and press the back of the seat down until it locks into place. Test your new battery by starting the ATV.

Items you will need

  • Wrench set

  • Phillips screwdriver

  • Torque wrench

 How to Replace a Battery on a Vino Scooter

Park the scooter on a firm, level surface. Support the scooter on its center stand.

Remove the right and left floor board side covers by backing out two screws in each cover with a Philips screw driver in a counter-clockwise direction. Set the covers and screws aside. Lift the rubber floor mat up and set it aside.

Remove the battery cover under the floor mat by backing out the two holding screws with a Philips screw driver in a counter-clockwise direction. Set the cover and screws aside.

Remove the negative battery cable by backing out the terminal screw with a Philips screw driver in a counter-clockwise direction. Remove the positive cable in the same fashion. Push the battery cables to one side and lift the battery from the battery compartment.

Lower the new battery into the battery compartment. Attach the positive cable to the positive battery terminal and tighten with a Philips screw driver in a clockwise direction. Attach the negative cable to the negative terminal in the same fashion.

Place the battery cover back over the battery and tighten the two holding screws in a clockwise direction with a Philips screw driver. Place the floor mat back onto the floorboard over the battery cover.

Reattach the right and left floor board side covers with the original holding screws turned in with a Philips screw driver in a clockwise direction.

Items you will need

  • Philips screw driver

  • Battery

 How to Change the Battery on Motorcycles

Open the seat and look under it for the battery access point. Most motorcycles have the battery situated under the rider's seat. Lifting the seat will let you remove the retaining strap and detach the battery from the case holder.

Examine the battery for any signs of damage or leakage. Over time, the battery may leak acid or build up a crust around the poles that is crystallized acid deposits. These are corrosive and can damage skin and if gotten in the eyes will lead to damage that may not be repairable.

Remove the battery and disconnect from the leads. To avoid sparking or shorting the battery against the frame of the motorcycle, remove the negative cable first. The shock of a battery discharge can cause severe burns and in some cases lead to a heart attack. After you remove the negative cable, then remove the positive cable.

Take off the sensor if the motorcycle is equipped with one and replace it at the same time you replace the battery. Clean the connection points of the cables thoroughly to remove any build up of acid or crystals.

Replace with the new battery in the exact reverse order as removed. Be sure when connecting the cables to connect the positive cable first and then the negative cable.

 How to Replace the Battery on a KTM Motorcycle

Remove the seat of your KTM motorcycle via the clips on the right and left side and the back. Some newer KTM motorcycles have two bolts at the rear holding the seat in. If this is the case, simply remove these bolts, found under the seat, and pull the seat upward.

Remove the negative battery terminal with a rubber-gripped wrench, then the positive one. Move the cables out of the way.

Remove the two rubber straps that hold the battery in place and pull it out of the frame. Have the battery disposed of properly by taking it to your dealer or a motorcycle shop.

Drop the new battery in place and secure it with the two rubber straps removed earlier. Be sure that it does not move unnecessarily and that the starter relay, to the right of the battery, is still in its correct position.

Connect the positive battery cable to the battery terminal using a rubber-gripped wrench, then connect the negative one. Tighten the terminal clips until there is no play and be sure that they make full contact with the battery terminals.

Reinstall the seat of your motorcycle. Start the motorcycle to test the battery.

Items you will need

  • New battery

  • Basic wrench set

  • KTM motorcycle

 How to Replace the Battery on a Vulcan Motorcycle

Unscrew the bolt under the sides and at the rear of the seat, using a 10 mm socket. Pull the seat toward the rear fender to slide the tab on the front of the seat out of the motorcycle's frame. Set the seat aside.

Unplug the electrical connectors on both ends of the battery between the motorcycle's seat rails.

Unscrew the bolts from the center of the battery cover, using a 10 mm socket. Lift the cover off the battery.

Unscrew the terminal bolt from the battery's negative terminal with a Phillips screwdriver. Pull the black cable off the battery. Unscrew the battery's positive terminal bolt with a Phillips screwdriver and pull the cable away.

Lift the battery out of the battery tray and replace it with a new battery.

Connect the battery cables to the battery, connecting the positive cable followed by the negative cable. Screw the terminal bolts into place with a Phillips screwdriver.

Reassemble the motorcycle by doing the steps in reverse.

Items you will need

  • 10 mm socket

  • Socket wrench

  • Phillips screwdriver

  • TX12-BS or equivalent battery

 How to Change the Battery on a Suzuki Boulevard C50

Use a 5-mm Allen wrench to remove the bolt holding the passenger seat to the rear fender, hidden under the cushion at the end of the seat. Lift the passenger seat upward and pull the seat to the rear to remove it.

Use a 5-mm Allen wrench to remove the bolts securing the rear of the rider's seat to the frame. Lift the rear of the seat off of the seat rails and pull the seat away from the frame.

Use a Phillips screwdriver to remove the bolts securing the wiring leads to the battery's terminals. Unscrew the negative (-) wiring lead first, followed by the positive (+) lead.

Pull the rubber strap off of the battery tray's hook and lift the battery out of the motorcycle.

Place a new YB16B-A1 battery in the battery tray. Pull the rubber strap over the battery and hook it onto the battery tray.

Use a Phillips screwdriver to tighten the wire lead bolts onto the battery's terminals. Screw the positive (+) lead onto the battery's positive (+) terminal first, and then screw the negative (-) lead onto the negative (-) terminal.

Follow the reverse order of removal to reinstall the seats.

Items you will need

  • 5-mm Allen wrench

  • Phillips screwdriver

  • YB16B-A1 battery