18xl

The KingSong 18XL (KS-18XL) is an 18-inch electric unicycle (EUC) introduced in late 2018 as the long-range flagship of KingSong's 18-inch line. It is built around a single 2200W hub motor (about 4000W peak) on an 84V system, paired with a large 1554Wh battery built from Samsung 35E cells in a 20s6p configuration (120 cells). The headline change over the earlier 18L was the jump from a 1036Wh pack to 1554Wh in essentially the same chassis, which gave the 18XL its signature long range. KingSong claims up to roughly 140 km, while independent and real-world testing typically lands nearer 80-100 km depending on speed, rider weight and terrain. Top speed is about 50 km/h (31 mph). The 18XL has no suspension — the large 18x2.5-inch pneumatic tire and big 25 cm pedals are the only cushioning. At roughly 24-25 kg it is a substantial machine moved with a retractable trolley handle, and it adds a four-speaker sound system, a full set of lights (headlight, brake light, customisable RGB side lights) and KingSong app connectivity over Bluetooth. As with any unicycle, balancing it is a serious skill that must be learned before riding at speed, and full protective gear is essential.