Can be changed, the mileage will be much longer after switching to lithium battery, 36V10AH lithium battery should be more than a thousand.
It should be noted that lithium iron phosphate batteries must be used to replace lithium batteries. Other lithium batteries are in danger of explosion.
When replacing the lithium battery, the charger should be replaced with a special charger for the lithium battery. The actual service life of the lithium battery is not yet ideal.