Leaperkim Sherman L 4000wh Electric Unicycle

Leaperkim Sherman L 4000wh Electric Unicycle

Name: Leaperkim Sherman L 4000wh Electric Unicycle
Brand: Leaperkim
Price: 3799 EUR
Availability: InStock
Rating: 5 (1 reviews)

Reference 496ebe0a-443d-11ef-0a80-0be50013467b

We have special Inmotion prices for registered customers ;-)

€3,799.00

EUR 3139.67 tax excl.

The Leaperkim Sherman L pairs a massive 4000Wh / 151.2V battery with a 3200W (8000W peak) motor for up to ~200 km of ideal range. Long-haul touring power at a manageable 46.5 kg.

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Free delivery on orders over 200 EUR, next day dispatch, tracked delivery to your door!

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Free returns for 14 days, warranty goods are picked up free of charge.

Leaperkim Sherman L 4000Wh Electric Unicycle

The Sherman L is a long-range flagship built around a colossal 4000Wh battery running at 151.2V on premium Samsung 50S cells. The headline isn't outright speed, it's distance: up to roughly 200 km in ideal conditions, with a realistic 140–160 km on a single charge. That puts it firmly in the long-haul touring class while keeping a manageable 46.5 kg curb weight and a hidden trolley handle for easy rolling.

Power that never runs short

A 3200W motor (peaking at 8000W) on a magnesium-alloy rim delivers confident torque on climbs and open road, governed by a 36×200V / 140A MOSFET controller and a SmartBMS. A hall-sensorless backup mode keeps you riding home if a sensor ever fails. Free-spin speed reaches around 92 km/h (per ewheels), with real-world riding near 90 km/h.

Suspension and ride comfort

The Fastace progressive spring/hydraulic fork offers 90mm of travel with three spring-weight options (62/66/70 lb) plus adjustable compression (12 clicks) and rebound (18 clicks), so you can dial the ride to your weight and terrain. The 20" wheel runs a TNT tubeless 20"×2.75" tire (80/90-14), available in street or knobby patterns.

Built for real-world riding

IPX6 / IP6X rated against water and dust
Max load 145 kg (320 lb, per ewheels)
Charging: ~6h at 5A standard, ~3h to 80% at higher rates, up to 20A fast charge supported
Leaperkim app with OTA firmware updates
Includes bonus Beidou Powerpads (per ewheels)

If your priority is going further without recharging, the Sherman L is one of the most capable touring wheels you can ride.

Reference 496ebe0a-443d-11ef-0a80-0be50013467b

Grade

staffan Söderberg 20/10/2024

Leaperkim Sherman L 4000wh Electric Unicycle

Excellent wheel, came we’ll packed, no pads or velcro included. Tire was not tubeless but it’s easy to do on the next tire change. Quality is 5/5

§ 01 / Philosophy

Range and speed.
Four thousand watt-hours, race-bred chassis.

Race-proven · Long-tour class
Leaperkim Lynx chassis

§ range

250

km / slow cruise

Mixed European riding sits around 130 - 160 km. Feather-light rolling and a 70 kg rider on flat tarmac push it past 200 km.

§ power

3200

W rated · 8000 W peak

The Lynx-platform motor delivers 45° climb capability and low voltage sag on long pulls. It does not feel stressed at 80 km/h.

§ mass

46.5

kg / mag-alloy body

Heavy by EUC standards, yet still ~4 kg lighter than a fully-loaded Lynx. You feel the weight on stairs - not once you are rolling.

The long-range Lynx, with the fireworks turned down.

The Sherman L shares its chassis bones with the Leaperkim Lynx, but the project brief is different. Where Lynx went after high-speed theatre - torque spikes, launch-pad pedals, peaky firmware - Sherman L is aimed at the rider who plans a route in the morning and does not want to think about charging until the evening.

The headline number is the battery: 4000 Wh at 151.2 V, built from Samsung INR21700-50S cells in a 6-parallel architecture. More parallel strings means each cell sees less current on a hard pull, which keeps temperatures sane and preserves capacity over the long haul. It is the same logic that turned the original Sherman into a cult touring wheel - only now the pack is about a quarter larger.

On paper it is a range-king. In the saddle it is calmer than Lynx - more like an Audi A8 than an RS 6.

FastAce hydraulic suspension with 90 mm of travel takes the edge off tram-lines, cobbles and the occasional kerb drop. Compression and rebound are both adjustable with a 4 mm key, and the three spring options (62, 66 and 70 lbs) let you fit it to your weight without guessing. The stock tyre is a 20″ × 2.75″ tubeless road-tread that carves nicely and tolerates light gravel; a knobby off-road cover is a popular second tyre.

Charging is where the Sherman L quietly wins back time. A standard 5 A brick fills the pack in about six hours, but the dual charge port accepts up to 20 A - roughly 1.5 hours from low to full, if you have a fast charger on hand. On a two-day tour that is the difference between a sit-down lunch and a proper hotel check-in.

§ 02 / Systems

Eight things Leaperkim rewrote for the L-class.

Factory data
Veteran Line spec sheet
Rev. 2024-Q3

Self-balance system

Fuses six axes of IMU data with per-cell voltage so the wheel stays planted when the pack approaches the lower cut-off.

Field-weakening drive

Pushes usable top speed past the old 135 V ceiling, giving the Lynx motor legal breathing room through Europe's mixed speed limits.

Hall anomaly hot-fix

Firmware-level correction for hall-sensor drift - a recurring issue on earlier 100 V+ wheels. Less stutter, fewer false cut-outs.

Durable range pack

Samsung INR21700-50S in a 6P layout. Cells rated for >500 full cycles to 80 % capacity; real-world cycles often exceed that.

Overall protection

Sealed magnesium-alloy shell, 20 sealing points around the pack and a conservative IPX6 / IP55 rating. Not a river wheel - fine in rain.

Stronger torque stack

Rewound stator and thicker phase wiring. Climbing a 45° dirt ramp at 60 kg pack no longer leaves the motor feeling taxed.

Smart BMS

Per-cell monitoring, bidirectional comms with the charger, and an Android/iOS app for live cell-delta plus temperature logging.

Tuned aesthetics

Less CNC bling than Lynx, more matte functional surfaces. Handle shims and pedal inserts in three colours ship as spares.

§ 03 / Battery system

A 4000 Wh pack only works if the BMS earns its keep.

Range is easy to put on a spec sheet. Cycling a pack this dense, at 20 A fast-charge rates, through Spanish summers and Alpine winters - that is the hard part. The Sherman L's smart BMS watches every cell in all eight protection domains, and talks to the charger so fast charges taper before heat becomes a problem.

In practice: you get honest state-of-charge, real temperature read-outs, and a pack that still reads above 90 % capacity after the first hundred full cycles. Not magic - just conservative engineering.

Architecture6P · 30S · 151.2 V nominal

Capacity4000 Wh · Samsung 50S

Charge rate5 A standard / up to 20 A

Temp window−10 °C to +80 °C (storage)

Low-voltage protection

Soft cut-off with haptic warning before cells drop into stress band.

Over-charge protection

Charger talks to BMS; current tapers in the last 8 % to protect cells.

Long-cycle chemistry

Samsung 50S at 6P spreads load. Cycles ≥ 500 to 80 % capacity.

Short-circuit cut-out

Hardware-level trip <200 µs. Independent of firmware state.

Bidirectional comms

BMS ↔ charger handshake. Compatible 20 A chargers only.

Thermal warning

4 NTC probes in the pack; audible warning above 60 °C cell temp.

Over-current limit

Phase-current ceiling stops runaway spikes from a stuck MOSFET.

Balanced discharge

Active balancing trims cell-delta during rest. Keeps capacity even.

§ 04 / ChassisSuspension

FastAce hydraulic, 90 mm travel.

Preload · compression · rebound — all adjustable

The Sherman L uses a FastAce BKA 21 AS on a mid-mounted linkage. Springs are progressive, so small bumps compress the first third of travel and harder hits ride deeper into the stroke without bottoming.

Weight brackets are 62, 66 and 70 lbs - pick the one that sags 25 - 30 mm with you and a loaded riding kit on the pedals. Wrong spring is the single biggest complaint we hear on ticket returns, so we list rider-weight guidance on the variant selector.

Travel: 90 mm progressive
Compression: 12 clicks
Rebound: 18 clicks
Shaft: Stainless, 16 mm

§ 05 / PowerMotor & drive

3200 W rated. ~8000 W peak.

Lynx platform · rewound for low-voltage-sag

The motor is the Lynx platform stator with a thicker phase-wire and improved thermal pathway to the magnesium shell. In plain English: it asks the battery for less current at any given torque demand, which is why a 4000 Wh pack still feels like a 4000 Wh pack after a fast climb.

Field-weakening keeps the top-end usable past the old 135 V ceiling. You will not miss the Lynx's party-trick launch - the Sherman L prefers a long, smooth pull.

Rated: 3200 W · 151.2 V
Peak: ~8000 W (phase)
Top speed: 125 km/h free-spin
Climb: 45° tested

§ 06 / EnergyCharging

Dual port · up to 20 A.

Two 10-pin XLR · fast charge aware

Factory 5 A brick: ~6 hours 0 → 100 %. If you keep a 10 A brick at home and a second at the office, you bring that down to 3 hours. A compatible 20 A fast-charge setup gets you from 20 % → 80 % in about an hour, on the bench.

Not every charger on the market is honest about its current curve. We ship chargers we have bench-tested; third-party kit needs the right BMS handshake to charge above 5 A.

Standard: 5 A · ~6 h full
Home-fast: 10 A · ~3 h full
Bench-max: 20 A · ~1.5 h full
Port: Dual 10-pin XLR

§ 07 / Ride notes

What it actually feels like - honest version.

In town

Quiet, planted, faintly boring in a good way. The low centre of gravity and the extended pack mean cobbles and tram-lines feel like texture, not events. The 20″ road tread corners cleanly and tolerates painted lines that would break looser treads.

At speed

Stable past 65 km/h in a way that lighter wheels never quite are. Once your core strength catches up, the wobble window basically closes. It does not feel fast - it feels composed, which is what you want on a long day.

Off tarmac

The stock tyre is a road pattern, so loose gravel is a limit. Fit a knobby and the Sherman L handles forest tracks and mellow single-track comfortably; the 45° climb figure is real if you have the skills.

On stairs

It is a 46.5 kg wheel. Expect to plan your building access and keep a trolley strap in your kit. The bright side: once you are on it, weight helps.

§ 08 / Who rides it

The Sherman L rewards riders who plan their day in three-digit km.

The multi-day tourer

You ride 100 + km a day and care more about voltage sag on hour five than about launch pedals. The 4000 Wh / 20 A combo was built for you.

The mixed-surface commuter

City in the morning, gravel detour after work, home before dark. The road-tread carves well, and the suspension eats tram-line junctions.

The experienced upgrader

You have logged a couple of thousand km on a Nikola, Master or Lynx, and you want calmer high-speed manners with a longer range envelope.

The long-haul explorer

Spain to Portugal through the Sierra. You stop at a café, plug in a 20 A brick, and leave again before the second espresso hits. That is the plan, at least.

First-time riders

46.5 kg and 3200 W is a lot of wheel to learn on. Start on an Inmotion V8S or a Kingsong 14 - come back to the L when free-mounts are automatic.

Stairs commuters

Four flights daily with no lift? Consider the Lynx or the V13. Range envelope is shorter, but your knees will write you a thank-you letter.

§ 09 / Technical reference

Every number that matters.

Veteran Line / Sherman L
Rev. 50S · 2024-Q3
Source — factory spec sheet

Battery & energy
Capacity	4000 Wh · 151.2 V nominalEquivalent to a 26 Ah pack at 151.2 V
Cells	Samsung INR21700-50S · 6P × 30S architecture
Charge port	Dual 10-pin XLR
Charge time	~ 6 h @ 5 A · ~ 3 h @ 10 A · ~ 1.5 h @ 20 A (bench)
BMS	Smart · per-cell monitor · bidirectional comms
Drive & performance
Motor	3200 W rated · ~ 8000 W peak (phase)
Top speed (free-spin)	125 - 130 km/h Tilt-back triggers earlier; not a target speed on the road.
Max. Speed (km/h) on public roads	25 Max. Speed (km/h) on public roads: 25; legal/public-road setting. Technical/private-land performance depends on local rules and rider responsibility.
Real-world range	130 - 160 km mixed · up to 200 km slow cruise
Max climb	45°, rider-dependent
Max load	~ 120 kg
Chassis & contact patch
Frame	Magnesium-alloy cases · 20 + sealing points
Suspension	FastAce hydraulic · 90 mm · progressive · 62 / 66 / 70 lb springs
Tyre	20″ × 2.75″ tubeless road-tread (knobby optional)
Pedals	190 mm grip tread · studded inserts
Weight	46.5 kg
Dimensions (H × L × W)	720 × 575 × 208 mm
Electronics & connectivity
Lights	2500 lm headlight · tail + brake · no ambient strips
Display	Monochrome matrix · speed, SoC, fault codes
App	Veteran app (Android / iOS) · EUC World compatible
Sound system	None fitted
Ingress rating	IPX6 / IP55 (conservative)
In the box
Wheel	Sherman L assembled · factory tyre fitted
Charger	5 A standard EU plug
Tools	2 × valve core · 4 mm Allen · 14 mm spanner
Docs	Quick-start card · warranty card · EU CE declaration

Compare with

Leaperkim Patton S — mid-tier Veteran for daily-use focus.
Leaperkim ORYX — long-range step-up at 4700 Wh and 176 V.
Leaperkim Lynx S — off-road sibling, refreshed Lynx platform.

Q-01 How far will I really go on one charge?

For a 75 kg rider on mixed European roads, expect 130 - 160 km per charge. A light rider, flat routes and a steady 40 - 50 km/h cruise can push past 200 km. Headwinds, cold weather and aggressive throttle work cut that down, sometimes by a third.

The 4000 Wh pack is generous, but it does not defy physics - plan around real-world range, not best-case.

Q-02 Is 20 A fast-charging safe for the cells?

Yes, within limits. The 6P architecture means each cell sees a smaller fraction of total pack current, which is why Leaperkim publishes the 20 A figure in the first place.

In practice: use a charger rated for this pack, do not fast-charge below 5 °C, and stop fast-charges at 80 - 90 % when you do not need a top-up. The BMS will not fight you if you do.

Q-03 Which suspension spring should I order?

Rough guide: 62 lb for riders below 75 kg, 66 lb for 75 - 95 kg, 70 lb for 95 kg and above. Kit weight, riding style and terrain shift that by ± 5 kg.

Drop us a note with your weight and intended use if you are on a border and we will tell you what we put on our own wheel.

Q-04 Can I ride it in the rain?

Light to moderate rain, yes. The ingress rating is conservative - designed for confidence on wet commutes rather than river crossings.

Do not pressure-wash it, do not ride through standing water that covers the hub, and dry the wheel before charging. Store indoors.

Q-05 Is it legal on European roads?

No - like all EUCs over 25 km/h, the Sherman L is not road-legal in most EU countries. Spain's DGT does not homologate it as a VMP, and UK PLEV rules currently exclude EUCs from public-road use.

It is legal on private property and in countries that have a separate regime for powered personal mobility (check local rules). We ship it; the riding context is on you.

Q-06 Is this a beginner's wheel?

No. 46.5 kg, 3200 W rated motor and a 151 V pack is too much wheel to learn on. Weight punishes small mistakes and the torque curve does not forgive over-lean.

Learn on a Kingsong 14 M, an Inmotion V8S or a V11Y, log 500 - 1000 km, then step up. You will enjoy the Sherman L a lot more after that.

Q-07 When does the next batch land in the EU warehouse?

Early September 2025 for the current pre-order window. Pre-orders ship in the order they are placed; batch sizes are small, so reserving early makes a real difference.

We email every buyer when the container lands, with a tracking number within 48 hours of dispatch.

Q-08 What comes with the warranty?

Two years, EU-wide. Covers manufacturing faults on the battery, motor and chassis. Wear parts - tyre, pedal grip, brake pads on the handle trolley - are not covered, which is the normal EUC convention.

We arrange home pick-up for repairs so you do not ship a 46 kg parcel yourself. In-house service is in Valencia.