This is a big no-no.
1, alternating current
Household electricity is AC, motorcycle batteries are direct current, AC is not able to charge the battery. Because the alternating current is positive and negative, positive charging, negative discharge (equivalent to a short circuit of the power supply), the fuse is broken or the air switch trip.
2, the voltage is too high
Motorcycle battery is 6v or 12v, household electricity is 220v, nearly 20 times higher, the insulation in the battery is not enough, not waiting for the explosion immediately trip.
Do not try to use 220V electricity directly to charge the motorcycle battery, it is very dangerous, the power of the explosion will be very large, start the motorcycle will make your motorcycle become a pile of scrap iron, the above two methods do not be used to experiment, it will be a disaster. Buy a battery charger!