Hi There, here are my asnwers to your concerns:
1. Deliveries to Canada are available.
2. The Greattan L is suitable for riders with a height of 5'4"–6'4", and the maximum load capacity is under 500 lbs. It should be fine for you to ride it with your daughter.
We also support certain customization on brakes and throttle to adapt rider's need, simply contact out experts at sales@addmotor.com for further assistance. see less

Regarding your second question: the dual-battery model includes both batteries for extended range. You only need to buy an extra one if you want a third as a spare. see less

We donot recommend using a toddler car seat with the Greattan L. The trike comes equipped with a safety belt that ensures passenger safety. For very young children, we suggest considering our E-325 cargo electric bike, which might be more suitable. Thanks see less

Hi, the Greattan L trike is available only with a 750W rear-mounted motor; however, its peak output can exceed 1400W. Under ideal conditions and when staying within the recommended weight limit, it can theoretically handle slopes of up to 10 degrees.
Most e-trikes are capable of climbing hills of around 7 degrees, with an upper practical limit of approximately 12 degrees. Additionally, the Greattan L trike has both motor power and rider input (PAS system) —the rider and motor work together to share the load. In this sense, it is a hybrid machine that combines human power with electric assistance. see less