HKM-1838675 16-Inch Electric Balance Bike 36V 5Ah Rear Hub 30-50 Nm Disc Brake Aluminium Frame

HKM-1838675 · electric balance bikes · see the specifications below (metric and US units listed) · net weight in the table

A 36V Pack Set Into the Down Tube Driving a Rear Hub Motor16 Inch E-Balance Bike 36V 5Ah Pack

Sixteen-inch wheels, a brushless rear hub rated at 30-50 Nm, and a 36V lithium pack carried low in the down tube. Two or three speed settings depending on the build, all under adult control, a disc brake that cuts power as the lever moves, and an aluminium alloy frame light enough for a young rider to pick up after a tip-over.

The step from a 12-inch balance bike to this one is mostly about momentum. Bigger wheels roll over roots, kerbs and gravel instead of stalling on them, and a bike that keeps rolling is a bike a child will lean into rather than fight.

What the motor adds is the ability to hold that roll on grass and on gentle slopes, without turning the bike into something that rides away from its rider.

At a Glance

• Model — HKM-1838675
• Type — 16-inch electric balance bike, no pedals
• Motor — Brushless rear hub, 30-50 Nm
• Battery — 36V lithium, 2.5Ah or 5.0Ah
• Battery position — Down tube, low in the frame
• Speed settings — 2 on the Standard, 3 on Pro, Cross and Pro Extreme
• Brakes — Disc brake with motor cut-off
• Wheels — 16-inch pneumatic tyres
• Frame — Aluminium alloy
• Range — 10 to 30 km per charge
• Charge time — 1 to 3 hours
• Builds — 16 Standard, 16 Pro, 16 Cross, 16 Pro Extreme

Frame, Hub and Fit

A 12-inch bike teaches balance at walking pace on flat ground. A 16-inch bike teaches it at rolling pace on real ground: gravel drives, park paths, the rough grass at the edge of a field.

The larger contact patch and the longer wheelbase do the work, holding a line when the surface is uneven, and the rider learns to lean rather than to steer around every bump.

It also raises the stakes slightly, which is why the speed switch matters more here than it does on a smaller bike. The low setting keeps the machine inside a speed an adult can walk beside; the higher settings are for a rider who already stops on command and looks where they are going.

• Type: 16-inch electric balance bike, no pedals
• Motor: Brushless rear hub, 30-50 Nm
• Battery: 36V lithium, 2.5Ah or 5.0Ah
• Battery position: Down tube, removable for charging
• Speed settings: 2 on 16 Standard, 3 on Pro, Cross and Pro Extreme
• Brakes: Disc brake, motor cut-off on lever pull

Moving up is a decision about the rider, not about the bike's capability. Because the wheels carry momentum, the brake has to be predictable rather than sharp.

Battery, Speed and Charging

A rear hub rated at 30-50 Nm on a 16-inch wheel is enough to pull a light rider up a grass slope and across soft ground without wheelspin becoming the limiting factor.

The number matters less than where the weight sits: with the pack low in the down tube and the motor in the rear wheel, the bike stays planted when the throttle opens, and the front end does not go light on a climb.

Traction is the honest limit, not power. On wet grass or loose gravel the rear tyre will break away before the motor runs out of pull, so tyre pressure is a real setting rather than a maintenance chore.

Firm for pavement, a little softer for loose ground, and checked before a session rather than once a season. The hub also removes a chain from the equation.

Who It Fits and How It Rides

The frame also carries the battery mount, the rear brake caliper and the motor dropouts in one structure, so there are fewer fasteners to work loose.

Sizing is set by the saddle and the bars, both adjustable. The right height puts both feet flat on the ground with a slight bend at the knee when seated, and lets a standing rider hold the bars without stretching.

• A disc at the rear with a lever that cuts motor power the moment it moves gives a rider
• That is the single skill that transfers furthest on the machine
• There is nothing to oil, nothing to derail and nothing to trap a small hand
• For a bike that lives in a garage next to bicycles with chains

What's in the Box

HKM-1838675 ships in one carton with the the product and the parts listed above. Check each item against the list before the first use, and keep the carton for the first month in case something has to go back.

Color and Finish

Carrying the battery low in the frame is a handling decision before it is a packaging one. Mass near the bottom of the bike keeps the centre of gravity where a rider expects it, so a wobble stays a wobble and a lean stays controllable.

It also puts the pack between the frame rails rather than on a rack behind the saddle, which is where a fall would otherwise land on it.

Battery Care and Maintenance

The 36V pack comes in 2.5Ah or 5.0Ah, and the larger pack roughly doubles ride time for a little more weight. Range is quoted at 10 to 30 km depending on the mode and the ground, which is honest for a machine used in bursts rather than for long tours.

A full charge takes one to three hours on the supplied charger, so an afternoon's riding and an evening's charging fit inside one day.

The pack unclips for charging indoors. That matters in winter: a lithium pack left flat and cold in a shed is the usual way a small battery loses capacity before its time.

Bring it inside, let it reach room temperature, then charge it. The aluminium frame is the reason this bike stays liftable. A rider who can pick their own bike up after a tumble does not need an adult to restart the session, and that independence is worth more than a kilogram saved anywhere else on the machine.

Specifications

Frequently Asked Questions

Service and Policies

Coverage that lasts beyond the box. Orders ship free with a tracking number in 2 to 5 business days. From delivery, the product is protected for 180 days against manufacturing defects and transit damage, returnable within 30 days for a full refund, and covered by a 24-month parts-and-labor warranty on manufacturing defects. Four policies, one idea: ship it free, protect it for 180 days, take it back for 30, and stand behind it for two years.

HKM-1838675 · 16-inch electric balance bike · brushless rear hub, 30-50 Nm · 36V pack low in the down tube, 2.5Ah or 5.0Ah · two or three speed settings under adult control · disc brake with motor cut-off · 16-inch pneumatic tyres · aluminium alloy frame · 10 to 30 km per charge · 1 to 3 hour charge · four builds, 16 Standard through 16 Pro Extreme · seat and post, charger and hex keys in the box · ships free with tracking · 24 month parts and labor warranty