X-TREME XM-3500Li Operation And Maintenance Instructions page 18

13. Why is this product the best available in the world today?
It has a Brushless motor. We emphasize "brushless" not just because this
is the latest technology, but because these permanent magnet motors are
supremely reliable! These more expensive motors produce high torque at
low speeds, keeping an acceptable balance of torque and energy across the
whole speed range. Often other types of electric vehicles on the market
today will still use sealed brush-type motors that are dependant upon brush
life that build up brush dust (residue) and susceptible to wear over time
which may affect maximum speed and electrical noise or become
problematic in other ways. Because these brush-type motors are sealed, it
often takes an expensive motor replacement to get them working again.
14. What is the Manufacturer Warranty?
Go to www.x-tremescooters.com/support for warranty information on
this model.
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