
OKAI
ES400A
Sharing-fleet e-scooter with under-deck swappable battery (611–784 Wh options), 350 W motor, 4G IoT + multi-GNSS, UL 2271 + UL 2272 certified.
37
miles range
15
mph top speed
350
watts motor
First introduced: 2022
Technical Specifications
Performance
Battery
Physical Specifications
Brakes & Suspension
Lighting
Connectivity
Features & Capabilities
Key Features
Pros
- UL 2271 + UL 2272 certified out of the box
- Multiple battery cell options (611–784 Wh)
- Swappable battery for low operating cost
- Solid honeycomb tires (zero flats)
- Lighter than ES600 (30.6 kg vs 33 kg)
Cons
- -Lower gradeability (20%) vs ES600 (25%)
- -Smaller front wheel (12") vs some competitors with 14"+
- -Solid tires give a stiffer ride than pneumatic
Ideal For
Compatible Fleet Platforms
About This Vehicle
The OKAI ES400A is a purpose-built sharing e-scooter designed for fleet operators. With a swappable Li-ion battery housed under the deck, a 350 W (700 W peak) brushless gearless rear-wheel motor, and 4G IoT with multi-GNSS positioning, it's engineered to keep operating costs low and uptime high.
Key features:
- Swappable battery under the foot pedal — quick in-field swaps mean less downtime and lower charging logistics costs.
- High-accuracy positioning — 4G LTE plus multi-GNSS (GPS / BeiDou / Galileo / GLONASS) lets the central console pinpoint each vehicle in real time.
- Multi-protection BMS — the battery management system is fully potted to deliver robust, stable performance in harsh weather and high-vibration environments.
- Rich optional accessories — stem lock, helmet lock, and RTK-grade positioning expand the ES400A's capabilities for permitted operations.
Specifications:
- Net weight: 30.6 kg / 67.5 lb
- Dimensions (L × W × H): 1200 × 505 × 1220 mm
- Max load: 150 kg / 331 lb
- Top speed: 12.4 mph (US, 20 km/h) or 15.5 mph (EU, 25 km/h)
- Motor: Brushless gearless, rear-wheel drive, 350 W rated / 700 W peak
- Torque: 28 N·m
- Gradeability: 20%
- Battery options: 47–48 V swappable Li-ion — BAK 16.75 Ah / 783.9 Wh, Panasonic 16 Ah / 768 Wh, LG HM2 15.5 Ah / 744 Wh, or DMEGC 13 Ah / 611 Wh
- Range: ≤50 km (13 Ah) to ≤60 km (16.75 Ah) — approximately 31–37 mi
- Charging time: ~5 hours (external 3 A charger)
- Tires: Solid honeycomb — 12" front (288 mm) / 10" rear (252 mm)
- Brakes: Front mechanical drum + rear electromagnetic + mechanical drum (regenerative)
- Connectivity: 4G LTE IoT, Bluetooth, multi-GNSS GPS
Certifications:
- US: UL 2272 (whole vehicle), UL 2271 (battery), FCC SDoC (47 CFR Part 15B), FCC ID (47 CFR Part 15C IoT)
- EU: CE (EN 17128 whole vehicle), CB (IEC 62133:2017 battery), UN38.3 (battery transportation), CE IoT (EN IEC 62311 / 62368-1 / EN 301 489), RoHS, WEEE
Optional accessories: Stem lock (IPX7, 304 stainless cable), helmet lock (IP67, 48 V), RTK module (centi-meter precision via GPS / BDS / Galileo / GLONASS).
Packaging & logistics: 4 units per box (1150 × 1090 × 1280 mm); a 40 HQ container holds 44 boxes (176 units total).
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