isinwheel U4

isinwheel U4 16-inch Folding Electric Bike User Manual

Model: U4

1. Bezpečnostní informace

Before operating your isinwheel U4 electric bike, please read all safety instructions carefully. Failure to follow these instructions may result in serious injury or damage to the product.

  • Při jízdě vždy používejte helmu a vhodné bezpečnostní vybavení.
  • Před každou jízdou se ujistěte, že jsou všechny komponenty bezpečně upevněny.
  • Do not ride in adverse weather conditions, such as heavy rain or snow.
  • Seznamte se s místními zákony a předpisy týkajícími se elektrických kol.
  • Regularly check tire pressure, brakes, and battery charge level.
  • Vyhněte se jízdě pod vlivem alkoholu nebo drog.

2. Obsah balení

Ověřte, zda jsou v balení přítomny všechny položky:

  • Skládací elektrické kolo isinwheel U4
  • Nabíječka
  • Klíče pro zámek baterie
  • Rear Rack (included component)
  • Uživatelská příručka

3. Nastavení a montáž

The isinwheel U4 electric bike requires some assembly. Follow these steps carefully.

3.1 Rozložení kola

The bike comes in a folded configuration for transport. To unfold:

  1. Umístěte kolo na rovný povrch.
  2. Release the frame folding latch, typically located on the main frame tube. Carefully unfold the frame until it locks into place. Ensure the latch is fully secured.
  3. Release the handlebar folding latch and raise the handlebar stem. Secure the latch.
  4. Adjust the handlebar height to your preference and secure the quick-release lever.
  5. Adjust the seat post height. The seat post also serves as the battery compartment access. Lift the seat to access the battery.
Image showing a person unfolding the isinwheel U4 electric bike and placing it into a car trunk.

Figure 3.1: The folding mechanism allows for compact storage and easy transport.

3.2 Instalace a nabíjení baterie

The 374.4 Wh (10.4Ah) removable battery is located under the seat. It may come partially charged, but a full charge before first use is recommended.

  1. Unlock the battery compartment using the provided key and lift the seat to expose the battery.
  2. Insert the battery into its slot, ensuring it clicks securely into place. Lock the battery with the key.
  3. To charge, connect the charger to the bike's charging port (or remove the battery and charge it separately). Plug the charger into a standard wall outlet. The indicator light on the charger will show charging status.
  4. Po úplném nabití odpojte nabíječku.
Image showing a hand removing the battery from under the seat of the isinwheel U4 electric bike.

Figure 3.2: The removable battery is located beneath the seat for convenient charging.

3.3 Front Wheel Installation (if not pre-installed)

If the front wheel is not pre-installed, follow these steps:

  1. Carefully align the front wheel with the front fork dropouts. Ensure the brake rotor slides correctly into the brake caliper.
  2. Insert the quick-release skewer through the wheel hub and secure it according to the manufacturer's instructions.
  3. Check that the wheel spins freely and the brake pads do not rub against the rotor.

4. Návod k obsluze

Understand how to operate your isinwheel U4 for a safe and enjoyable ride.

4.1 Zapnutí/vypnutí

To power on the bike, press and hold the power button on the handlebar display. To power off, press and hold the same button.

4.2 Jízdní režimy

The isinwheel U4 features a 3+1 working mode system:

  • Assist 1-3 (Pure Electric Mode): Use the throttle for electric-only propulsion. Levels 1-3 adjust power output.
  • Assist 1-3 (Pedal Assist Mode): The motor provides assistance as you pedal. Levels 1-3 adjust the level of assistance.
  • Assist 0 (Normal Bike Mode): The electric assist is off, and the bike functions as a traditional bicycle.
  • Long Press (Walk Assist Mode): Hold the designated button for low-speed assistance, useful when walking the bike.
Image showing a rider on the isinwheel U4 electric bike with an overlay of the display showing speed, battery, and assist level.

Figure 4.1: The display shows current speed, battery level, and assist mode.

4.3 Brzdový systém

The bike is equipped with dual disc brakes for reliable stopping power. Apply both brake levers gently and evenly to slow down or stop. Avoid sudden, hard braking, especially at high speeds or on slippery surfaces.

Image highlighting the dual suspension and disc brake features of the isinwheel U4 electric bike.

Figure 4.2: Dual suspension and disc brakes provide enhanced control and comfort.

4.4 Adjusting Handlebar and Seat Height

For optimal comfort and control, adjust the handlebar and seat height to fit your body. Use the quick-release levers to loosen, adjust, and then securely tighten them.

5. Údržba

Pravidelná údržba zajistí dlouhou životnost a bezpečný provoz vašeho elektrokola.

5.1 Péče o baterii

  • Pravidelně nabíjejte baterii, i když ji nepoužíváte, abyste zachovali její dobrý stav.
  • Před nabíjením se vyhněte úplnému vybití baterie.
  • Baterii skladujte na chladném a suchém místě mimo dosah přímého slunečního záření a extrémních teplot.
  • The battery is designed for approximately 5000 charge cycles and includes BMS intelligent safety and overcharge protection.
Image showing the removable battery and its specifications, including 374.4Wh capacity and safety features.

Figure 5.1: The 374.4 Wh removable battery is designed for durability and safety.

5.2 Údržba pneumatik

  • Check tire pressure before each ride. Maintain pressure within the recommended range printed on the tire sidewall.
  • Inspect tires for wear, cuts, or punctures. The bike uses 16" x 2.5" durable anti-slip tires.

5.3 Kontrola brzd

  • Pravidelně kontrolujte správné napnutí a citlivost brzdových pák.
  • Zkontrolujte brzdové destičky, zda nejsou opotřebované, a v případě potřeby je vyměňte.
  • Ensure brake rotors are clean and free from oil or grease.

5.4 Obecné čištění

Vyčistěte kolo reklamouamp hadříkem a jemným mýdlem. Nepoužívejte vysokotlaké myčky přímo na elektrické součástky.

6. Řešení problémů

Tato část se zabývá běžnými problémy, se kterými se můžete setkat.

6.1 Kolo se nezapíná

  • Check if the battery is fully charged and securely installed.
  • Ensure the battery is unlocked and properly connected.
  • Verify that the power button on the display is pressed correctly.

6.2 Motor se nespouští

  • Confirm that the bike is in an assist mode (Assist 1-3) and not Assist 0.
  • Zkontrolujte, zda jsou brzdové páky zcela uvolněné, protože některé systémy při brzdění přeruší výkon motoru.
  • Ujistěte se, že je baterie dostatečně nabitá.

6.3 Brakes Squeaking or Dragging

  • Clean the brake rotors and pads with a suitable brake cleaner.
  • Check for proper alignment of the brake caliper. Adjust if necessary.
  • Worn brake pads may need replacement.

6.4 Reduced Range or Power

  • Před každou jízdou se ujistěte, že je baterie plně nabitá.
  • Riding in higher assist modes, against strong winds, or on steep inclines will reduce range.
  • Tire pressure can affect efficiency; ensure tires are properly inflated.

7. Specifikace

FunkceSpecifikace
Název modeluU4
Typ kolaElektrické kolo
MotorBezkartáčový motor 500 W (špičkový 750 W)
Baterie10.4Ah / 374.4 Wh Removable Lithium Battery
Nejvyšší rychlostAž 19 mph
Rozsah22-55 Miles (depending on assist level and terrain)
Velikost kola16 palce
Pneumatiky16" x 2.5" Durable Anti-slip Tires
Styl brzdyDvojité kotoučové brzdy
Typ odpruženíFront Fork & Seat Shock Absorber
Materiál rámuHliníková slitina
Typ rámuStep-Through, Foldable
Rozměry ve složeném stavuApprox. 32.2" L x 27" W
Hmotnost jízdního kola57 LBS
Kapacita zatížení264 liber
Doporučená výška jezdce1,4 m - 1,98 m
Zahrnuté komponentyZadní stojan
Image showing the dimensions, load capacity, recommended height, and bicycle weight of the isinwheel U4 electric bike.

Figure 7.1: Key dimensions and weight specifications for the isinwheel U4.

8. Záruka a podpora

8.1 Informace o záruce

This specific isinwheel U4 electric bike variant includes a 1-year extended warranty. Please refer to your purchase documentation for full warranty terms and conditions.

8.2 Zákaznická podpora

For any questions, technical assistance, or warranty claims, please contact isinwheel customer service. Contact details can typically be found on the official isinwheel webwebu nebo prostřednictvím vaší nákupní platformy.

© 2026 isinwheel. Všechna práva vyhrazena.

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