How to check/replace a motorcycle battery
Checking on the status of your motorcycle battery before long ride can help to make sure that you never get stranded along the way. One of the easiest telltale roadside tests that you can do with the battery is check on the headlights. If your bike headlight is extremely dim this is a good indication that the battery is not able to start your machine.
Do a standing voltage test: with the help of a paddock stand you can check into the battery and do a quick voltage test. With the help of a multimeter you can plug the leads into the device and press the black lead to the common ground and the red lead into the V port on the battery. Make sure the bike is completely turned off and then you can record the voltage with the multimeter. If you're testing a standard 12 V battery for a motorcycle the voltage can show you how much power is left in the battery. If you get a reading lower than 11.9 the battery is only 40% and it will likely need to charge soon. By the time it hits 11.58, there's a good chance that your battery may not be able to charge up again.
Charge up the battery: you can either charge the battery with a float style charger that can hook onto your bike when it's not in use with the paddock stand or you can charge up the battery with a standalone charger. This will involve removing your battery and setting it aside as it charges over an extended period.
In the worst case you may need to perform a battery replacement which involves going down to your local motorcycle parts store, picking up a compatible battery and then replacing the battery completely in your motorcycle.
Keep some of these ideas in mind if you think it could be time to replace your motorcycle battery.