Qualisports Dolphin Folding Electric City Bike

The Qualisports Dolphin is the premier choice for commuters who refuse to be limited by battery life.

Sleek, portable, and surprisingly powerful, the Dolphin features an innovative Upgradable Battery System. While it comes standard with a high-quality 48V 10.5Ah Samsung seat-post battery, the frame is designed to support a secondary tube battery, pushing your total range to a massive 80+ miles.

Navigating the city is effortless thanks to a custom-engineered 500W motor that delivers an impressive 80Nm of torque, making steep bridges and urban inclines feel like flat ground. Safety is paramount with the inclusion of dual-piston hydraulic disc brakes, providing superior stopping power with minimal hand effort. Whether you’re folding it down for the train or unfolding it for a marathon cross-town trek, the Dolphin is built for the long haul.

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Technical Specifications

Feature	Details
Motor	Qualisports Custom 500W Brushless Hub (80Nm Torque)
Primary Battery	48V 10.5Ah Samsung Lithium-ion (Seat-Post)
Optional Battery	48V 7Ah Tube Battery (Available via Upgrade Kit)
Max Speed	20 MPH (Class 2)
Estimated Range	60 Miles (Single) / 80+ Miles (Dual Battery PAS)
Brakes	Custom 2-Piston Hydraulic Brakes with Power Cutoff
Tires	INNOVA 20" x 2.30" City Tires
Gearing	Shimano Tourney 7-Speed System
Net Weight	51 lbs
Max Load	300 lbs
Folded Size	33" x 14.5" x 28.5"
Display	KT-7 LCD with USB Charging Port

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Frequently Asked Questions

Q: How does the dual-battery upgrade work?

A: The Dolphin and Dolphin Plus share a versatile frame design. You can start with the standard seat-post battery and later purchase a dual-battery kit (including a 7Ah tube battery) to significantly extend your riding range without needing a new bike.

Q: Why are hydraulic brakes better for city riding?

A: Hydraulic brakes use fluid to multiply the pressure you apply to the lever. This means you get much more responsive and powerful braking compared to mechanical cables, which is essential for safely navigating unpredictable city traffic and sudden stops.

Q: Is the Dolphin easy to carry when folded?

A: Yes! At just 51 lbs, the Dolphin is one of the lighter 48V folding bikes on the market. Its compact folded footprint (33" x 14.5" x 28.5") makes it easy to stow under an office desk, in a closet, or in the trunk of a small car.

Q: Can I charge my electronics on the go?

A: Absolutely. The Multifunctional LCD Display features a built-in USB port, allowing you to charge your smartphone or other devices directly from the bike’s battery while you ride.

Q: What financing options do you offer for the Dolphin?

A: We offer 100% financing available at checkout. This allows you to split the cost of your new Dolphin into affordable monthly payments, making your daily commute more budget-friendly than ever.

Q: How far can Qualisports bikes go on a single charge?

A: Distance differs on the terrain, the weight of the cyclist, and the power mode you are using (pedal only, full Throttle, or pedal assist).  The typical range on Beluga is 20 to 45 miles on a single charge using primarily electric power. If you use the PAS, mileage can increase.  Some riders can achieve over 45 miles when cycling in pedal-assist mode.

Q: How to turn on/off the front headlight?

A: Turn on the LCD display, hold the display's UP button for 2-3 seconds, and the headlight/LCD display background light will both be turned on.  Hold the power button the same way to turn it off. 

Q: Is the bike pre-assembled?

A: 95% of the bikes are pre-assembled, with detailed installation videos for the front and rear fenders.

 

Estimated shipping and delivery is 5-10 business days if the product is in stock. 

Qualisports has a 14-day return warranty. You can view the return details by clicking here.