Harley-Davidson's first electric motorcycle has been a total flop, but here are 12 other e-bikes from scrappy upstarts that may find the success it couldn't

The sport bike is available with three different battery packs and offers a maximum range of 180 miles, but if we're honest, this bike really isn't built for long cruises — its speed runs prove that.

The LS-218 carries a base MSRP of $38,888.

The S and SR models sport combined ranges of 60 miles and 120 miles, respectively. But an optional long-range upgrade bumps the SR's range to 150 miles combined, or 223 miles in the city. The more powerful SR gets a motor worth 70 horses and 116 pound-feet of torque, according to Zero.

The base-model Zero S costs $10,995, while the Zero SR can be had for as low as $15,495.

Both supermotos sport the same electric powertrain that serves up 27 horsepower, 78 pound-feet of torque, and a top speed of 85 mph, according to Zero.

The FX is more catered toward off-roading while the FXS is built more for off-road and on-road travel, but both models will run you $8,995 without options.

The DS sports a 7.2-kWh battery pack, along with what Zero claims to be a top speed of 98 mph, a city range of 82 miles, 46 horsepower, and 78 pound-feet of torque.

The DSR has a 14.4-kWh battery, and a higher marks on everything else as well: a city range of 163 miles, a power output of 70 horses, and 116 pound-feet of torque.

The DS starts at $10,995, while the DSR commands $15,495.

According to Zero, they each offer up a combined range of 109 miles thanks to a 14.4-kWh battery pack. They also both offer fast-charge capabilities, claiming the ability to reach a 95% charge in a little over an hour.

The SR/F costs $21,495, while the SR/S starts at $21,995.

Since the Kalk& originated as an off-road-focused bike called the Kalk OR, it's essentially a street-legal electric dirt bike. It sports a relatively small, 10-kW motor, but what the Kalk& lacks in power it makes up for in size — it weighs only 174 pounds, a fraction of most street bikes.

Pricing starts at $14,000.

Inspired by work benches, it can be modified with accessories to fit each rider's needs.

The ösa+ starts at $8,500.

Energica's Ego has a 13.4-kWh battery that provides up to 100 miles of combined range, according to the company. Energica also says the Ego puts out 148 pound-feet of torque and 145 horsepower.

The sportier Ego+ benefits from a larger battery pack, which ups range to 143 miles combined and boosts torque to a whopping 159 pound-feet, the company says.

The Ego starts at $19,540.

The bike comes in two versions. The Eva Ribelle claims 145 horsepower, 159 pound-feet of torque, and a top speed of 125 mph. There's also the toned-down Eva EsseEsse9, with more classic styling and slightly different stats: 109 horsepower, 148 pound-feet of torque, and the same top speed.

The Eva EsseEsse9 starts at $17,620.

That classic look may just win it some of Harley's business if and when electric motorcycles become mainstream.

The hefty, roughly 800-pound bike can be optioned with an 18.8-kWh or a 33.7-kWh battery pack. According to Brutus, the V9's electric motor puts out 88 horsepower along with 92 pound-feet of torque.

Brutus builds its bikes custom to order.

The Brutus 2 has a smaller, 10-kWh battery pack, but it still has all the retro styling of the V9 — especially in its café-racer version, aptly called the Brutus 2 Café.

Today, electric vehicles make up a scant 2% of car sales worldwide, so it'll likely be a long while before any of these startups pose a true threat to Harley-Davidson or any other well-established motorcycle manufacturer.

But there's little doubt that the future of transportation is electric, and it'll be interesting to see which e-motorcycle winds up on top.