This is the direct replacement for the battery included with the MX1.
36V Lithium-Ion Battery with Samsung cells - 14 aH capacity
Quick charging from zero to full in 4 to 6 hours
Please note that due to FAA and IATA regulations for Lithium battery content, battery orders can not be expedited for air travel. Orders placed before 1:00 PM CST are typically processed and shipped same-day with delivery expected in 3 - 4 business days.