Less than a few weeks.... try two weeks.... my route only averages 50 miles. I did go 65 miles one day, but it was a disaster to my battery. The 50 to 60 mile advertisement just isn't accurate.
Now this is just my opinion and assessment so far. These trucks are designed for routes of around 20 to 40 miles. They need to be dispatched as close to centers as possible. Stay off of interstates. Stay away from steep hills (I have both). City routes and mall routes or heavy shopping plaza areas are perfect. Load em up all ya want. The pickup power is good until battery gets to around 20 percent.