I weigh 80 kg and I have a derestricted Crussis ONE-Largo 9.10 e-bike with a 900Wh battery. It features a Panasonic GX Ultimate motor. What kind of distances could I cover at an average speed of 30 km/h and 35 km/h?
@Jnos welcome to the forum. Right, the honest answer here involves a bit of physics that works against you at those speeds, but the 900Wh battery does give you a decent buffer.
Your Panasonic GX Ultimate puts out 95Nm of torque and peaks at around 600W (independent testing by Velomotion measured 887W under max crank input). It's a powerful motor, but it's also the thirstiest in its class. In controlled flat-terrain testing it consumed 5.9 Wh/km, which is about 20% more than a Bosch CX or Shimano EP8 doing the same job. That matters when you're asking it to work hard at sustained high speeds.
The key thing with derestriction is that on a stock EU pedelec at 30 km/h, the motor has already cut out at 25 km/h and your legs are doing all the work above that. On your derestricted bike, the motor is still pushing at 30-35 km/h, which means it's fighting aerodynamic drag that scales with the square of your speed. Going from 25 to 35 km/h nearly triples the power needed to overcome air resistance.
Realistic range estimates at 80kg on flat road, derestricted:
At a sustained 30 km/h: roughly 15-20 Wh/km consumption, giving you approximately 45-60 km from your 900Wh battery.
At a sustained 35 km/h: roughly 20-28 Wh/km, bringing that down to approximately 30-45 km.
For context, Crussis quotes "up to 200km" range, but that's Eco mode at gentle speeds on flat tarmac with a tailwind and a prayer. Nobody hits that in the real world. A realistic range at normal riding pace (20-25 km/h, mixed terrain, standard assist) is more like 60-90 km with your 900Wh pack.
Add hills into the mix and those numbers drop further. The Velomotion test measured 41.6 Wh/km at a 10% gradient, which would drain your 900Wh in about 22 km of pure climbing.
The good news is that 900Wh is a genuinely large battery. Even at 35 km/h you're looking at 30-45 km, which is a solid ride. Most people with 750Wh packs would be watching the battery gauge nervously at those speeds. You've got headroom that smaller batteries simply don't have.
