Biomega BER Review | Sleek Simplicity

A 250Wh battery is certainly on the smaller side, but that’s part of how the BER achieves such a low overall weight. It’s not necessarily a drawback either as a 250W motor keeps power demands in check, giving us a solid 1:1 ratio of watt-hours to motor watts.

Our range test results showed the bike is capable in shorter to medium commute environments:

• Eco power: 31.4 miles
• Sport power: 20.4 miles

Those numbers aren’t breaking any distance records, but they are hitting efficiency ones. At 8Wh/mi in Eco and 12.4Wh/mi in Sport, the BER squeezes more from its small battery than most bikes in our database. For context, our all-bike averages sit at 11.8Wh/mi and 21.8Wh/mi, and even compared to its city-bike peers (8.3 / 14.9Wh/mi), the BER comes out ahead. It’s making every watt-hour count.

A big part of that comes from some smart programming tweaks. Full disclosure: we worked with Biomega to recommend dialing Eco assistance down quite a bit, as the original power levels were too high to maximize mileage. The updated tune still gives meaningful assistance but stretches the distance much more effectively.

Two additional things work in the rider’s favor here: system tuning and range-extender options.

With Hyena’s HRA app, you can fine-tune the motor output at all three assist levels. If you want to ride conservatively and stretch your range, you can. If you want more punch and aren’t worried about distance, that’s an option too.

Hyena also offers a 5Ah range-extender battery that mounts in the bottle-cage area. It adds roughly 71% more capacity, which based on our data translates to an estimated 34.8–53.7 miles of additional range. It will add a couple of pounds and a bit of cable clutter, especially with the charge port located at the headtube, but the extended mileage may be worth the tradeoff for some riders.

Single-speed bikes aren’t known for their hill-climbing prowess, but that’s one of the joys of electric assistance, as it makes the unpleasant easy, and the “yeah right” possible with a little effort.

The BER reached the top of our Devil’s Backbone test hill in 2 minutes and 34 seconds, averaging 11.8 mph. Did it take some huffing and puffing to get there? Sure, but not bad at all for a half-mile climb at an 8% grade.

That time is a bit behind our current e-bike average of 2:07, but still respectable given the BER’s specs. In fact, it outperformed several bikes with larger motors, which speaks to the Hyena system’s punch and the bike’s overall light weight.

A few things stood out from this test. As mentioned earlier, the drivetrain’s gearing may slightly limit top-end speed on flat ground, but here, that gearing pays off. It strikes a smart balance that keeps the bike workable on climbs without feeling punishing. A larger belt ring would make starting and climbing less pleasant.

All things considered, the BER proved to be a surprisingly capable climber. The lightweight frame certainly helps, but Hyena’s drive system deserves credit too. It’s a motor we’ve seen on a few other bikes, and it consistently punches above its weight while maintaining a pleasantly quiet operation.

Of course, this is still a single-speed bike with a modest battery, so it’s best suited to mostly flat terrain or mild rolling hills. But when a big climb appears on your route, the BER can handle it with a little help from your legs.

For all the attention given to the BER’s design, Biomega didn’t overlook practical spec inclusions, especially when it comes to braking.

The bike’s Shimano Deore brakes are a welcome sight. They deliver solid stopping power with an easy, single-finger lever pull. It’s a setup you’d commonly find on some mountain bikes, which makes it feel a bit over-equipped—in a good way—for something this light.

In our testing, the BER stopped at an average distance of 21 feet, 3 inches. That’s nearly a full foot shorter than the all-bike average. That’s excellent performance for a lightweight city e-bike.

Too often, brands treat lightweight builds as an excuse to go light on braking. I appreciate that Biomega didn’t. Instead, they spec’d a confident, quality system that complements the BER’s overall refinement and inspires trust on the road.

The BER has a classic yet distinctive feel. The frame is made from aluminum, but the build quality is high enough that I initially mistook it for carbon fiber. The welds are impressively clean, and the overall weight reinforces that premium impression.

A quick note: our test bike included a few preproduction quirks—namely, some visible external cables and extra routing points on the frame that won’t appear on the final production version we’re told. So the starting point was good, but the final production should be even better.

The BER is available in two frame sizes (S/M and L/XL), accommodating riders from roughly 5’4” to 6’4”. It’s a fairly compact bike with a shorter wheelbase and handlebar reach, giving it a lively, agile feel that I really enjoy on city bikes. Biomega is also offering four distinct color options, so there’s some welcome variety for riders who like to match form with function. You can check those out by clicking the button below.

There’s good rigidity to the ride, aided by the thru axle. It’s the type of thing that feels highly responsive. No, there isn’t any suspension, but if you’re not adverse to rising off the saddle from time to time, the precise feel is a genuine joy.

One standout design choice is the integrated lighting. The handlebar houses a built-in headlight, eliminating the need for bulky external mounts and keeping the cockpit clean. Cables can occasionally get in the way and partially obscure the beam though.

The rear lighting is equally clever: five small LEDs are embedded into the seatpost, with two extending slightly outward to enhance side visibility. It’s a sharp, cohesive design touch—though worth noting that a long jacket could potentially obscure the lights.

If there’s one design element I wasn’t completely sold on, it’s the battery cover. The charging port is tucked into the headtube, sealed with a cap to protect it from the elements. Ours didn’t sit completely flush, and I could see it being torn off or stretched over time. That may just be a preproduction issue, but it’s something worth keeping an eye on.

One final note: Biomega is both new and not new. The brand has been around for years, built a cult following overseas, was sold, and then later reacquired by its original founder. Their renewed focus is on the U.S. market, so they might feel new here, but they aren’t an unknown quantity. That background helps build buyer confidence, especially when paired with UL certifications and a service/dealer network that they’re said to be actively expanding. It feels less like a newcomer taking a swing and more like a niche brand returning with a refined vision.

Full transparency: I was skeptical when the BER first showed up for testing. I’ve ridden a few design-award-winning e-bikes before, and it was clear they won a beauty pageant and not a functionality one. They were great to look at, but not so great to ride. It left me questioning whether a bike could emphasize aesthetics without sacrificing basic performance. Fortunately, Biomega proved it’s possible to have both.

This is a genuinely cool bike. I like designs that stand out for subtle, thoughtful reasons, not necessarily by screaming for attention, and the BER rewards a closer look. The more time you spend with it, the more clever details you notice: the way the frame joins seamlessly, the integrated lighting touches, even the distinctive stem.

Out on the road, the BER delivers a ride that feels almost dreamlike. Its lightweight frame doesn’t compromise stability; it enhances agility. The bike feels sprightly, responsive, and composed all at once. The Hyena motor performs reliably, and I’ll always appreciate a clean, quiet belt drive on a single-speed setup.

Our test unit was preproduction, so a few small details still need refinement, but Biomega appears well on track to stick the landing. Overall, the BER impressed me as a fun, distinctive, and well-executed ride that breaks from the norm in all the right ways.

Happy Riding! Make sure to let us know if you have any questions or if you think we left anything out in this review of the Biomega BER down in our comments section.