Project Description

20 inch folding electric bike with fat tires EB9


Motor:High speed brushless geared
Battery:36V 8.8Ah/10.4Ah/11.6Ah
Speed:25Km/h or 32Km/h
Range :35-45Km
Max Load:120kgs
Front Fork:Suspension or alloy/steel fork


We’ve covered plenty of folding electric bikes and a few electric fat bikes. What we haven’t previously seen is a folding electric bike with fat tires. The Fat EB9 from China Kocass Bike launches with claims of being the world’s first. Its thick, knobby tires are secured to a folding frame and powered by up to 500 watts of pedal assist.

Kocass Bike’s Fat EB9 The Fat EB9 uses a li-po battery pack for up to 50km  of electric power The Fat EB9 is billed as the world’s first folding fat e-bike EB9 Bike will also show a fat version of the pictured Beach Vintage Side e-bike at Eurobike

We’re not sure about you, but we think “folding,” “electric” and “fat” are just too many adjectives for any one bike. It seems like those big, burly tires will get in the way of your compact, folding bike. We also wonder if the 20-in folding-bike sizing of those tires will cut into the performance of the fat tire, which is usually mountain bike-sized.

We won’t knock it, though, because there are probably more than a few commuters out there that have to ride through snow and muck in winter, want to store or transport their bikes in a small space, and want to have an electric motor helping them climb hills and pedal farther. So why not a folding, electric fat bike?

The Fat EB9 comes in 36V/250-watt and 48V/500-watt levels. The 250-watt drive is wired to a 10-Ah lithium-polymer battery pack mounted vertically behind the seat post. That battery helps you roll the 4-inch-wide tires forward for between 31 and 43 miles (55 and 70 km). After that, it takes four to five hours to charge back up. Motor output is adjusted via a three-speed controller, and a battery life indicator lets you know how much juice is left.

Beyond that, the Fat EB9 is your basic small folder. The 25-kg (55-lb/with battery) bike features an aluminum alloy frame, hydraulic disc brakes, a 7-speed Shimano and reinforced aluminum rims. Options include mud guards, and front and rear LED lighting.

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