KOOLUX BK10S 48V 13Ah Lithium Battery 20*4.0 Inch Tire Folding Electric Bike

The range depends on the riding mode, rider weight, and terrain. On average, you can expect40-60 milesusing Pedal Assist (PAS) and approximately25-35 mileson pure electric throttle mode. Our high-capacity lithium batteries are designed for long-distance efficiency.

Out of the box, our bikes are limited to20 mph (32 km/h)to comply with Class 2 e-bike regulations. However, for off-road use, the speed can often be unlocked up to28 mphvia the display settings, depending on the specific model.

Yes! The battery is designed with a quick-release mechanism and a safety lock. You can easily remove it to charge indoors at your home or office, or charge it while it is still mounted on the bike frame.

Using our included smart fast-charger, a full charge from 0% to 100% typically takes between4 to 6 hours. We recommend charging the battery before it drops below 20% to prolong its overall lifespan.

Our e-bikes arrive85% pre-assembled. You only need to install the front wheel, handlebars, pedals, and headlight. We provide a professional toolkit and a step-by-step assembly video guide—most customers have it ready to ride in under 30 minutes.

We ship directly from our warehouses in the[Insert Location, e.g., California/Germany]. Orders are processed within 1-2 business days, and standard shipping typically takes3-7 business daysto arrive at your door.

Our bikes are ratedIPX5 water-resistant, meaning they can handle light rain and splashes from puddles. However, we do not recommend riding in heavy downpours or submerging the bike in deep water, as this can damage the sensitive electronic components.

In most regions, our e-bikes are classified as bicycles, not motor vehicles, so youdo not needa driver’s license, registration, or insurance. However, we always recommend checking your local state or city regulations before riding.