HKM-A3 Electric Scooter 350W Peak 500W 36V 13Ah 468Wh 27.9-Mile Range 33.9 lb Regenerative Braking 21700 Cell Pack

350W · 36V 13Ah 468Wh · 27.9 mi · 15.5 mph · 8 in honeycomb · 220 lb load

A 21700 Cell Pack and Regenerative Braking on a 6061 Alloy FrameLong Range That Fits Under the Desk

The A3 Plus pairs a 350W rear-hub motor rated 500W peak with a 36V 13Ah pack of 21700 cells, returning up to 27.9 miles of range per charge at a governed 15.5 mph. Regenerative braking feeds energy back to the pack while a rear disc adds mechanical bite, and the 6061 aerospace aluminum frame folds in one step and carries up to 220 pounds. At 33.9 pounds it lifts into a trunk or under a desk. Eight-inch air-free honeycomb tires never need a pump, an LCD dash reads speed, mode and battery.

The A3 Plus is the extended-range folder of the line, built for riders whose commute runs past the usual loop. A 350W brushless rear-hub motor rated 500W peak drives the deck with smooth, quiet assist, and the throttle response stays progressive so takeoffs are predictable in traffic. The 6061 aerospace aluminum frame keeps the net weight at 33.9 pounds, and the one-step folding latch locks with a click for trunk storage and closet parking.

Range and speed stay honest. The 468Wh pack of 21700 cells returns up to 27.9 miles per charge, and rider and cargo weight, terrain and temperature all move that number. A governed 15.5 mph top speed keeps the pace legal in city lanes and subject to local rules, and the 30-degree gradeability pulls the short ramps without drama.

At a Glance

• Model — HKM-A3 Plus | Extended-Range Electric Scooter
• Motor — 350W nominal (500W peak) rear-hub motor
• Battery — 36V 13Ah lithium-ion / 468Wh (21700 cells)
• Range per Charge — 27.9 mi (44.9 km)
• Top Speed — 15.5 mph (25 km/h), electronically governed
• Frame — 6061 aerospace aluminum
• Wheels — 8-inch solid honeycomb, air free
• Load Rating — 220 lb (100 kg)
• Net Weight — 33.9 lb (15.4 kg)
• Lighting — 3W LED headlight and rear brake light
• Foldable — One-step folding mechanism
• Smart Features — LCD display, cruise control, riding modes
• Brakes — Regenerative braking and rear disc
• Water Resistance — IPX4 splash-resistant

Frame, Motor and Deck

The frame is 6061 aerospace aluminum in White, strong for its weight and resistant to corrosion over seasons of daily use. The one-step folding latch sits at the stem base and locks with a click, so the deck folds flat in seconds for carrying upstairs.

A 350W brushless rear-hub motor rated 500W peak drives the deck with quiet, progressive assist - smooth from a standstill and predictable in traffic. Top speed is a governed 15.5 mph, and a 30-degree gradeability keeps short ramps and bridge approaches on schedule.

Eight-inch solid honeycomb tires are air free and puncture resistant - no pump, no flat fixes on the shoulder of the road. Regenerative braking scrubs speed at the lever and feeds energy back to the pack, and the rear disc adds mechanical bite, so stops end short and straight.

• Frame: 6061 aerospace aluminum, 33.9 lb (15.4 kg) net
• Motor: 350W nominal, 500W peak rear-hub
• Pack: 36V 13Ah 468Wh built from 21700 cells
• Tires: 8-inch solid honeycomb, air free and puncture resistant
• Brakes: Regenerative braking plus rear disc
• Speed: Governed 15.5 mph (25 km/h) top speed
• Fold: One-step mechanism, latch clicks shut
• Load: 220 lb (100 kg) rider and cargo

The LCD dash sits at the bar center and reads speed, mode and battery at a glance, with riding modes under a thumb and cruise control for the open stretch. A 3W LED headlight lights the early and late ride and a rear brake light signals the stop.

Battery, Range and Charging

The 36V 13Ah lithium-ion pack stores 468 watt-hours in a 21700-cell layout, the energy behind the 27.9-mile range. The management system balances cells and guards against over-current and over-discharge, so the pack holds up over seasons of daily use. Rider and cargo weight, terrain and temperature all move the range figure, and cold weather trims capacity until the pack warms.

Plug into any standard wall outlet and the pack hits 80 percent in about 3.5 hours on the supplied charger - no disassembly, no special equipment, and a charge costs pennies. The charge port keeps its cover closed against dust and road spray. Store the scooter indoors at room temperature, top it up before a long weekend away, and avoid parking it warm and full right after a hard ride.

Ride the low mode for the longest distance or open it up when the road does; the LCD dash shows mode, speed and battery as you go. Regenerative recovery feeds the pack on every downhill and every red light, cruise control holds the pace on the long straight, and the extended pack covers the weekday loop that runs a little longer.

Who It Fits and How It Rides

It fits the rider whose commute runs past the usual loop. The deck carries up to 220 pounds of rider and cargo, the one-step fold takes seconds for trunk storage and closet parking, and at 33.9 pounds the build lifts without a fight up a stairwell.

On the road it rides composed. The low, stable deck keeps the rider planted, the progressive throttle keeps takeoffs smooth in traffic, and the regenerative and rear disc brakes end stops where intended.

• Longer weekday commutes where 27.9 mi covers the loop
• Trunk, closet and under-desk parking at 33.9 lb with the one-step fold
• Riders up to 220 lb who want extended range without extra weight
• City lanes and bike paths at a governed 15.5 mph, local rules apply
• Rides in light rain, sealed to IPX4 - not for soaking or pressure washing

What's in the Box

Before the first ride: check the folding latch is fully locked, confirm both brakes bite, and charge the pack fully. HKM-A3 Plus ships in one carton with the product and the parts listed above - check each item against this list before the first use.

Color and Finish

White covers the frame, the deck and both fenders, with a clean matte read rather than a gloss coat. The finish hides road film better than a bright lacquer after a winter of commuting, and the 6061 aluminum under it stays corrosion resistant through seasons of daily use.

The deck pad is dark and textured for grip in the wet, and the LCD sits in a dark bezel at the bar center. The honeycomb tires read as a clean perforated sidewall. Wipe the finish with a damp cloth; solvents dull it.

Battery Care and Maintenance

Charge soon after a ride rather than parking it warm and full, store the pack indoors at room temperature, and keep the charge-port cover closed so dust and moisture stay out. Ten minutes a month keeps the 27.9-mile range where it belongs: wipe the deck and stem with a damp cloth after wet rides, check the honeycomb tires for embedded debris, and skip the pressure washer.

Confirm the folding latch is locked before every ride - a loose latch clicks under load and the noise disappears once it is locked. Check the rear disc pad condition, and if the lever still reaches the bar, have the circuit serviced. Tighten the stem clamp and latch with a quarter turn when they creak.

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-A3 Plus · extended-range folding commuter electric scooter · 350W nominal 500W peak rear-hub motor · governed 15.5 mph (25 km/h) top speed · 30-degree gradeability · 36V 13Ah 468Wh pack built from 21700 cells · up to 27.9 mi (44.9 km) per charge · 6061 aerospace aluminum frame · 8-inch solid honeycomb tires, air free and puncture resistant · regenerative braking with variable recovery plus rear disc · one-step folding latch with audible click · LCD display with riding modes and cruise control · 220 lb (100 kg) payload · 33.9 lb (15.4 kg) net weight · sealed to IPX4 against road spray · 3W LED headlight and rear brake light · 0 to 80 percent charge in about 3.5 hours · White matte finish, low stable deck · built for the long weekday commute, the last mile and the trunk-to-desk week