Flat Battery

[His Dudeness]

If it's at 1.5V it's probably for the bin but if it's not been discharged for too long sometimes they will come back. You can try charging it and see if it comes back by you connecting another battery in parallel with the dead one and then connecting your charger. Connections in parallel have the same voltage across them so the charger will see the voltage of the good battery and turn on. Parallel between two batteries is connecting positive terminal to positive terminal with a wire and negative terminal to negative terminal with a second wire. If you have jumper cables use them to make the connections. They are large enough diameters that they won't over heat. After you connect the two batteries together connect the charger as normal to one of the batteries and it should come on and start charging the two batteries. Leave it for about half an hour and then plug out the charger and disconnect the batteries hopefully the dead battery is now up to a voltage where the charger will come on when you connect it to the charger by itself and you can charge it like normal the rest of the way.

If you want to push start the bike as fazersharp said turn the ignition on, put the kill switch to run, pull the clutch in, put the bike in second gear and run with the clutch held in, once you get to your top speed release the clutch. If you were running fast enough the engine should start. You have to immediately pull the clutch lever again to stop the bike driving off without you :lol

You can also jump it off a car. I haven't done that myself so I won't tell you how to do that but if I was doing it I'd keep the car engine off in case the car alternator caused problems for the bike. But I don't know if that is really a problem or not.