How Long Does It Take To Charge Motorcycle Battery. A brand new lead-acid 12-volt battery under a constant-current. A new lead-acid battery in good health will take between five and eight hours to charge the motorcycles battery to 70.

When you add up those maximums it could take up to eighteen hours. Lithium batteries can be charged faster than lead-acid batteries. Despite its compact size its not just a trickle charger.
How long should I charge my battery.
However it all comes to an average time that most batteries would be charged regardless of the brand. Technically a motorcycle battery does charge while the motorcycle is idling though it does not provide as much amperage as when the motorcycle is at higher speeds. When you add up those maximums it could take up to eighteen hours. Most motorcycle Batteries should be charged to max at the rate of one tenth the amp rating of the battery.