Why is that important? Saiki wanted to stress the upgradability of the bike: the battery is said to last five years, and while right now a new unit will set you back a massive $5,000 (half the cost of the bike),
But that doesn't include the cost of the 80-pound battery that needs replacement every five years. The battery costs some $5,000, though Banman hopes that will come down drastically in a few years.