Fast Answer for Busy Riders ⚡ (TL;DR)
If you care about getting reliably far on a single charge with as little fuss as possible, the Acer ES Series 5 is the safer overall choice: more real-world range, more "set and forget" feel, and a slightly more polished, grown-up package.
The Hiboy KS4 Pro fights back with stronger punch from the rear wheel and a much friendlier price tag, but cuts corners in overall refinement and long-term feel - it's the scooter you buy with your head in your wallet, not your heart in the ride.
Choose the Acer if you want a dependable commuter that just quietly works day after day; pick the Hiboy if you're on a tight budget and value extra shove and speed over polish and longevity.
Now, let's dig into what really separates these two once you've done a few hundred kilometres on each.
Electric scooters in this class are the workhorses of urban mobility: no wild top speeds, no massive dual motors, just everyday tools to get you from your flat to the office without a fight. The Acer ES Series 5 comes from the world of laptops and monitors and tries to play the "serious, practical commuter" card with big-battery confidence and a techy, corporate look.
The Hiboy KS4 Pro is the budget insurgent: more motor, more shove, and a price that makes it very tempting if you're staring at your bank balance as much as at spec sheets. It promises stronger performance, zero-flat solid tyres, and rear suspension at a price where many rivals still feel like toys.
On paper, they're chasing the same rider. On the road, they couldn't feel more different. If you want to know which one you'll still be happy with after a year of commuting in real traffic and real weather, keep reading.
Who Are These For, and Why Compare Them?
Both scooters live in that middle ground between cheap rental-clone and proper enthusiast machine. They're aimed squarely at city commuters who want something faster and more capable than the bargain-basement stuff, but aren't ready to pay premium-brand prices.
The Acer ES Series 5 leans into the long-distance, low-hassle commuter role. Big battery, solid (foam) tyres, rear suspension, sensible top speed - it's built for people doing longer daily runs who hate maintenance and don't want to think about range every morning.
The Hiboy KS4 Pro aims at riders who want more shove and speed for less money. It accelerates harder, climbs hills more confidently, and undercuts Acer's price by a painful margin. Same general weight class, similar wheel size, both with solid tyres and rear suspension - they absolutely sit in the same decision bucket for many buyers.
So the question is: do you prioritise that "big power, small price" promise, or do you trust the more measured, range-first approach?
Design & Build Quality
In the hand, the Acer feels like it was designed by people who've spent years shipping office hardware. The stem is clean with mostly hidden cabling, the folding latch closes with a reassuring clunk, and nothing rattles straight out of the box. It looks like a serious commuter tool, just with a hint of "gaming DNA" in the subtle green touches.
The Hiboy KS4 Pro goes for a more aggressive, slightly more budget-sport vibe: matte black with red accents, visible cabling that's mostly tidy, and a frame that feels solid enough but a bit more mass-market. The folding mechanism is quick and simple, though the tolerances don't feel quite as tight as on the Acer - especially noticeable once you've logged a few dozen kilometres and any play starts to make itself heard.
Decks tell you a lot about intent. Acer's deck is generously sized, with a nicely grippy rubber mat that doesn't feel cheap and doesn't trap half the city's dust. The Hiboy's deck is a bit more basic - functional grip, decent size, but the overall finish feels more utilitarian than refined.
Neither is badly built, but the Acer carries itself like a serious consumer-electronics product; the Hiboy feels more like a well-executed budget scooter that's made to hit a price first, polish second.
Ride Comfort & Handling
Both scooters use solid-style tyres with rear suspension, which means they are trying to be comfortable while never getting flats. Physics, however, always wants the last word.
On the Acer, the foam-filled ten-inch tyres plus rear shock deliver a ride that's surprisingly civilised for a solid-tyre commuter. On typical city tarmac and mildly broken bike paths, the rear suspension knocks the sting off expansion joints and manhole covers. After several kilometres, your knees know you're not on air-filled rubber, but they're not screaming for mercy either. The steering feels calm and predictable; it's the kind of scooter you settle into rather than fight.
The Hiboy, with its honeycomb solid tyres, is more of a mixed bag. On fresh asphalt, it's lovely - smooth, planted, and the rear motor gives a nicely "pushing" sensation out of corners. As soon as the surface degrades - cobbles, cracked pavements, the usual inner-city abuse - the honeycombs remind you they're still solid rubber. The rear shock does take the edge off bigger hits, but high-frequency chatter comes through the bars more than on the Acer. Longer rides on rougher routes are noticeably more fatiguing on wrists and ankles.
In terms of handling, the Hiboy feels a little more eager, helped by rear-wheel drive and punchier acceleration. It darts through traffic happily and doesn't feel unstable at its higher top speed. The Acer is more composed and "boring" in the best way - it tracks straight, resists twitchiness, and feels very predictable in emergency manoeuvres.
Performance
If your inner child is still alive and well, the Hiboy KS4 Pro is going to make a better first impression. The rear motor has more rated muscle, and when you thumb the throttle, it steps off the line with a confidence the Acer simply doesn't match. In city traffic, the Hiboy pulls away from lights with enough urgency to clear taxis and cyclists without drama. Mild hills that make the Acer work will see the Hiboy chugging up with much less loss of speed.
The Acer's front motor is tuned for calm, steady progress. It gets up to its legal-ish cruising speed without drama, but you never get that "wow, this thing goes" moment. For flat cities and moderate riders, it's fine - and very friendly for beginners - but once you've tried stronger machines, the Acer feels more appliance than thrill.
Top-speed behaviour follows the same pattern. The Hiboy's higher ceiling you can clearly feel: enough headroom to comfortably sit with fast bicycles and the zippier part of scooter traffic. The chassis remains reasonably stable at that pace, though you're more aware of road imperfections through the solid tyres. The Acer tops out lower and feels perfectly at ease there - planted, predictable, but it definitely lives on the more conservative side of the performance fence.
Braking is similar in concept on both: rear mechanical disc plus front electronic assistance. Stopping distances are adequate on each, but the Acer's slightly calmer overall performance means you're less often asking for true emergency stopping. On the Hiboy, with more speed and torque on tap, you lean on the brakes harder and more often, and you can feel where the budget nature of the components starts to show: effective, but not exactly inspiring.
Battery & Range
This is where Acer quietly walks away with the grown-up prize. Its battery pack is notably larger than what you typically see around this price, and that translates into very real extra kilometres. Riding it hard, at full legal speed and in normal stop-start city conditions, you can plan noticeably longer routes without that creeping battery anxiety. It also holds its performance more consistently through the discharge - it doesn't turn into a limp duck as soon as the gauge drops below half.
The Hiboy's battery is smaller, and you feel that in your habits. For short city hops and commutes of modest length, it's absolutely fine - you can do a typical daily round trip without thinking. Stretch things out, ride full-tilt with some hills, and you're into "I should probably charge tonight" territory far sooner than on the Acer. It's not bad; it's just not a long-range machine, no matter what the marketing numbers suggest.
Charging times reflect that: the Acer takes longer to fill that big tank, which makes it more of a true overnight-charger scooter. The Hiboy's pack refills in a working day or regular evening, which is convenient, but you'll be doing it more often.
If you want to forget the charger exists for days at a time, Acer has a clear edge. If your life revolves around shorter hops and you're happy to plug in frequently, the Hiboy's range is adequate but not impressive.
Portability & Practicality
On the scales, the two are close enough that your biceps won't really care which you bought. Both sit in that "yes, I can lift it... no, I don't enjoy it" category. Short flights of stairs, in and out of car boots, on and off trains - fine. Fifth-floor walk-up every day - your gym subscription will become redundant quite quickly.
The Hiboy does feel a touch more manageable in tight multi-modal days. The folding system is quick, and the folded package tucks under desks and into corners neatly. The stem hook on the rear fender works well as a carry point. The Acer folds similarly quickly and locks together in a sensible way too, but the slightly bulkier feel and bigger-battery heft make it feel more like you're moving a compact vehicle rather than a "portable" gadget.
In terms of day-to-day use, both benefit from solid tyres: no pumping, no patch kits, no swearing at tyre levers in the rain. Each has an app for locking and basic tweaks; Acer's feels a tad more in line with consumer-electronics UX expectations, while Hiboy's app is functional but occasionally flakier with connections. Neither replaces a decent physical lock - the motor lock is fine for a coffee stop, not for overnight street parking.
For pure portability, the Hiboy edges ahead slightly thanks to its smaller battery and marginally lighter feel. For overall practicality as a car or bus replacement for longer daily use, Acer pushes back with that extra envelope of range.
Safety
Both scooters tick the basic commuter safety boxes: dual braking systems, decent lighting, ten-inch wheels, and some level of water resistance. The differences are more in execution than philosophy.
The Acer's frame geometry and calmer performance make it feel more stable when you're not fully focused - early-morning rides, late-night returns, or days when you're simply tired. Ten-inch wheels and a planted stance reduce twitchiness, and its lighting setup is competent, with a properly positioned headlight and rear brake light. Some regional versions getting bar-controlled indicators is a nice bonus if you can find that spec.
The Hiboy puts more fireworks into visibility: the "three lights" approach with extra side glow does make you stand out, particularly in urban night riding where side-on traffic is your main hazard. At its higher top speed, the chassis stays reasonably composed, but the harsher feedback from the solid tyres means you need to stay more alert to surface changes.
On wet roads, both have enough grip from their rubber compounds to be usable, but solid tyres always ask for a gentler hand than pneumatics. Water protection is similar on paper; in practice, Acer's more buttoned-up electronics heritage inspires slightly more confidence in the rain, even if you still shouldn't treat either as a submarine.
If we're talking about which scooter feels like it has your back when things get messy, the Acer's calmer nature and more planted feel give it a subtle but real advantage.
Community Feedback
| Acer ES Series 5 | Hiboy KS4 Pro |
|---|---|
| What riders love Long real-world range, no-flat foam tyres, "solid and quiet" build, stable handling, decent rear suspension, clean look, trusted mainstream brand, and the general "charge less, worry less" feeling. |
What riders love Strong punchy motor, good hill performance, zero-maintenance tyres, bright lighting, fair comfort for a solid-tyre scooter, attractive price, and responsive customer support. |
| What riders complain about Heavier than expected to carry, modest hill climbing, long charge time, slightly stiff ride on really bad surfaces, connectivity quirks with the app, and fixed bar height for taller riders. |
What riders complain about Harshness on rough roads, stiff rear shock, screws working loose without thread-locker, realistic range much lower than brochure claims when ridden hard, and occasional app or display visibility annoyances. |
Price & Value
On sticker price alone, the Hiboy KS4 Pro looks like the obvious winner: you get a noticeably stronger motor, rear suspension, solid tyres and app connectivity for what many competitors charge for weaker, bare-bones commuters. For riders whose budget is tight, that's a compelling package - the scooter feels like "a lot of spec for the money".
The Acer asks for a much fatter chunk of your wallet. What you're really buying with that is range and a slightly more polished, mainstream-brand experience. The battery is significantly larger, the design feels more mature, and the build has fewer rough edges. Over months of use, that extended range and calmer, sturdier feel do start to pay back in daily satisfaction - especially if you're replacing public transport or frequent car trips.
Value, then, depends on what you count. If you measure euros per watt of motor and initial purchase price, the Hiboy looks like the deal. If you measure value in stress-free kilometres and long-term commuting comfort, the Acer makes a stronger case than its price tag first suggests.
Service & Parts Availability
Acer isn't an e-scooter veteran, but they are a very established tech brand. That brings a couple of quiet advantages: better-structured support channels in Europe, retailers you've actually heard of, and a parts ecosystem that doesn't depend on one obscure webshop staying alive. Electronics like controllers and displays benefit from Acer's experience in consumer hardware manufacturing.
Hiboy, on the other hand, is a known quantity in the budget scooter space. Their direct support is often praised for responsiveness, and they do stock common parts reasonably well. However, you are more likely to be dealing with online-only processes, and long-term availability is more of a moving target. Community knowledge and DIY fixes are plentiful, but it's all a bit more "internet hustle" than structured after-sales infrastructure.
If you like the idea of walking into a big retailer or dealing with a brand that also services half the laptops in your office, Acer has the edge. If you're happy replacing bits yourself and talking to support via email and chat, Hiboy is workable - but it requires a little more tolerance for the occasional hiccup.
Pros & Cons Summary
| Acer ES Series 5 | Hiboy KS4 Pro |
|---|---|
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Cons
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Parameters Comparison
| Parameter | Acer ES Series 5 | Hiboy KS4 Pro |
|---|---|---|
| Motor power (rated) | 350 W front hub | 500 W rear hub |
| Top speed (approx.) | Bis ca. 25 km/h | Bis ca. 30 km/h |
| Claimed range | Bis ca. 60 km | Bis ca. 40 km |
| Real-world range (est.) | Ca. 40-45 km | Ca. 25-30 km |
| Battery | 36 V 15 Ah (540 Wh) | 36 V 11,6 Ah (ca. 417 Wh) |
| Weight | 18,5 kg | 17,5 kg |
| Brakes | Front electronic + rear disc | Front electronic ABS + rear disc |
| Suspension | Rear suspension | Rear shock absorber |
| Tyres | 10" foam (solid) tyres | 10" honeycomb solid tyres |
| Max load | 100 kg | 100 kg |
| Water resistance | IPX4 / IPX5 (region-dependent) | IPX4 |
| Charging time | Ca. 8 Stunden | Ca. 5-7 Stunden |
| Price (approx.) | 613 € | 355 € |
Final Verdict - Which Should You Choose?
In day-to-day commuting reality, the Acer ES Series 5 comes out as the more complete package, even if it doesn't shout about it. It rolls further on a charge, feels more composed when you're not riding at your sharpest, and carries a touch more polish in build and user experience. If your commute is longish, you value predictability over thrills, and you want something that behaves like a sensible piece of transport rather than a toy, Acer is the better fit.
The Hiboy KS4 Pro has its own clear niche. If you absolutely need the extra hill capability and livelier acceleration, and your wallet sets a hard ceiling, it delivers a lot of go for the money. Just go in with eyes open: the ride is harsher on bad infrastructure, the range is fine but unremarkable, and the overall feel is more budget workhorse than refined commuter. Ideal for shorter, punchier city runs where performance and price trump range and finesse.
Put simply: for a calm, capable, low-stress commuter that you'll grow into rather than out of, pick the Acer ES Series 5. If you're prioritising up-front savings and stronger motor grunt over comfort and endurance, the Hiboy KS4 Pro will do the job - just don't expect it to feel as grown-up once the honeymoon period is over.
Numbers Freaks Corner
| Metric | Acer ES Series 5 | Hiboy KS4 Pro |
|---|---|---|
| Price per Wh (€/Wh) | ❌ 1,14 €/Wh | ✅ 0,85 €/Wh |
| Price per km/h of top speed (€/km/h) | ❌ 24,52 €/km/h | ✅ 11,83 €/km/h |
| Weight per Wh (g/Wh) | ✅ 34,26 g/Wh | ❌ 41,97 g/Wh |
| Weight per km/h (kg/km/h) | ❌ 0,74 kg/km/h | ✅ 0,58 kg/km/h |
| Price per km of real-world range (€/km) | ❌ 14,42 €/km | ✅ 12,91 €/km |
| Weight per km of real-world range (kg/km) | ✅ 0,44 kg/km | ❌ 0,64 kg/km |
| Wh per km efficiency (Wh/km) | ✅ 12,71 Wh/km | ❌ 15,16 Wh/km |
| Power to max speed ratio (W/km/h) | ❌ 14,00 W/km/h | ✅ 16,67 W/km/h |
| Weight to power ratio (kg/W) | ❌ 0,053 kg/W | ✅ 0,035 kg/W |
| Average charging speed (W) | ❌ 67,5 W | ✅ 69,5 W |
These metrics quantify different aspects of efficiency and value. Price-per-Wh and price-per-km/h show how much performance or battery you get per euro. Weight-based metrics tell you how much mass you're hauling around for each unit of speed, power or range. Wh-per-km reflects energy efficiency in motion. Power-to-speed and weight-to-power describe how strong and "sporty" a scooter is for its class, while average charging speed indicates how quickly the battery can realistically be refilled.
Author's Category Battle
| Category | Acer ES Series 5 | Hiboy KS4 Pro |
|---|---|---|
| Weight | ❌ Slightly heavier overall | ✅ A bit lighter to lift |
| Range | ✅ Clearly longer real range | ❌ Mid-pack, needs charging |
| Max Speed | ❌ Conservative commuter pace | ✅ Faster, livelier cruising |
| Power | ❌ Adequate, never exciting | ✅ Stronger motor, more shove |
| Battery Size | ✅ Much bigger capacity pack | ❌ Smaller, commuter focussed |
| Suspension | ✅ Rear setup nicely tuned | ❌ Stiffer, less compliant |
| Design | ✅ Cleaner, more refined look | ❌ More budget, generic feel |
| Safety | ✅ Calmer, more planted ride | ❌ Harsher, needs more focus |
| Practicality | ✅ Great for longer commutes | ❌ Better for short hops |
| Comfort | ✅ Softer feel for solids | ❌ More vibration on rough |
| Features | ✅ App, indicators regionally | ✅ App, strong lighting |
| Serviceability | ✅ Brand channels, organised | ❌ More DIY and online |
| Customer Support | ✅ Retailer-backed, structured | ✅ Responsive, parts often sent |
| Fun Factor | ❌ Sensible, slightly dull | ✅ Punchier, more playful |
| Build Quality | ✅ Tighter, fewer rattles | ❌ Feels more budget grade |
| Component Quality | ✅ More consistent overall | ❌ Corners cut to hit price |
| Brand Name | ✅ Mainstream, widely trusted | ❌ Budget, niche perception |
| Community | ❌ Smaller scooter community | ✅ Larger budget-scooter base |
| Lights (visibility) | ✅ Solid, well positioned | ✅ Very bright, side glow |
| Lights (illumination) | ✅ Good practical beam | ✅ Strong commuting beam |
| Acceleration | ❌ Gentle, beginner-friendly | ✅ Noticeably quicker launches |
| Arrive with smile factor | ✅ Quietly satisfying competence | ✅ Fun motor punch |
| Arrive relaxed factor | ✅ Less fatigue, calmer ride | ❌ Harsher, more tiring |
| Charging speed | ❌ Slower overnight refill | ✅ Quicker daily top-ups |
| Reliability | ✅ Feels solid, low drama | ❌ More small niggles |
| Folded practicality | ❌ Bulkier, heavier feel | ✅ Easier in tight spaces |
| Ease of transport | ❌ Heftier on stairs | ✅ Slightly easier to carry |
| Handling | ✅ Stable, confidence-inspiring | ❌ Sharper but less composed |
| Braking performance | ✅ Adequate, matches speed | ✅ Strong enough for power |
| Riding position | ✅ Spacious, comfortable deck | ❌ Slightly more cramped |
| Handlebar quality | ✅ Feels sturdier, refined | ❌ More basic finish |
| Throttle response | ✅ Smooth, predictable | ✅ Smooth yet lively |
| Dashboard/Display | ✅ Clear, good sunlight legibility | ❌ Harder to read in sun |
| Security (locking) | ✅ App lock, mainstream locks | ✅ App lock, easy to secure |
| Weather protection | ✅ Slightly better sealed feel | ❌ Basic, acceptable only |
| Resale value | ✅ Brand helps resale | ❌ Budget image hurts resale |
| Tuning potential | ❌ Less modding community | ✅ Bigger modding scene |
| Ease of maintenance | ✅ Fewer niggles, solid build | ❌ Needs more bolt checking |
| Value for Money | ✅ Strong if you need range | ✅ Excellent on tight budget |
Overall Winner Declaration
In the Numbers Freaks Corner, the ACER ES Series 5 scores 3 points against the HIBOY KS4 Pro's 7. In the Author's Category Battle, the ACER ES Series 5 gets 29 ✅ versus 19 ✅ for HIBOY KS4 Pro (with a few ties sprinkled in).
Totals: ACER ES Series 5 scores 32, HIBOY KS4 Pro scores 26.
Based on the scoring, the ACER ES Series 5 is our overall winner. Riding both back to back, the Acer ES Series 5 simply feels like the more grown-up companion: it doesn't try to impress you with fireworks, it just quietly gets you where you need to be, day after day, with fewer compromises and less fatigue. The Hiboy KS4 Pro is the louder value proposition - it shoves harder, costs less, and will make your first few rides feel exciting - but over time its rougher edges and shorter legs start to show. If you want a scooter that fades into the background and lets your commute be the least dramatic part of your day, the Acer is the one that earns its place by the door. The Hiboy has its charms, especially for the budget-conscious, but it never quite escapes the feeling that you're riding the "cheap fast one" rather than the complete package.
That's our verdict when we try to stay objective – but hey, riding is mostly about emotions anyway, so pick the one that will make you look forward to your commute every single day.

