The Qualisports Dolphin 500W 48V Dual Battery Folding Electric Bike is a long-range compact folding e-bike designed for riders who want stronger performance, extended battery life, and commuter-friendly portability. It upgrades the standard Dolphin platform with a higher-capacity battery system and improved torque, making it suitable for hills, longer commutes, and all-day riding.
Qualisports Dolphin Folding Design and Build
The Dolphin Folding Electric Bike uses a 6061 aluminum folding frame with a compact geometry, allowing it to be easily stored in apartments, cars, or offices. Therefore, it is designed for riders who want both portability and stronger performance than ultra-light folders.
Key Design Features
- Foldable aluminum alloy frame for compact storage
- 20” wheels with urban-friendly stability
- Integrated seat-post + optional frame battery system
- Shimano 7-speed drivetrain for flexible riding
- Hydraulic disc brakes for strong stopping power
Moreover, the folding mechanism is designed for quick collapsing, making it practical for commuting and travel.
Qualisports Dolphin 500W Motor Performance
The Dolphin Electric Bike uses a 500W rated geared hub motor (up to ~750W peak), tuned for stronger torque and hill-climbing ability compared to lighter folding e-bikes. Therefore, it performs better in mixed terrain and heavier load conditions.
Performance Highlights
- 500W motor with higher peak output capability
- Top speed around 20 mph (32 km/h)
- Smooth pedal assist + throttle control
- Better climbing performance than entry-level 250–350W folders
In addition, riders report it feels more “capable” under load compared to smaller folding models, especially on inclines.
Qualisports Dolphin Dual Battery System and Range
The standout feature of the Dolphin 48V system is its dual-battery upgrade option, combining a seat-post battery and an additional frame-mounted battery. Therefore, it significantly extends riding range.
Battery Features
- 48V lithium battery system (seat-post + optional frame battery)
- Dual battery configuration extends range to ~40–80 miles depending on mode
- Single battery range typically ~25–60 miles
- Removable battery design for easy charging
Moreover, the dual setup is especially useful for commuters who want fewer charging cycles and longer weekend rides.
Qualisports Dolphin Riding Experience
The Dolphin Folding E-Bike offers a stable and comfortable ride due to its wider tires and more robust frame compared to ultralight folders. Therefore, it is better suited for longer commutes and mixed terrain riding.
However, it is heavier than small folding bikes, so it may feel less convenient to carry for frequent lifting or stairs.
Qualisports Dolphin Safety and Features
The bike includes hydraulic disc brakes, which provide strong, consistent stopping power in different weather and terrain conditions. Therefore, it maintains good control at higher speeds and during downhill riding.
Moreover, the LCD display provides real-time ride data such as speed, battery level, and assist mode.
Qualisports Dolphin Key Benefits
- Strong 500W motor with good hill performance
- Dual battery system for extended range
- Folding frame for storage and transport
- Hydraulic disc brakes for safety and control
- Shimano 7-speed gearing for versatility
- Suitable for commuting and long recreational rides
- More power than lightweight folding e-bikes
- Balanced mix of portability and endurance
Alex Stewart (verified owner) –
This electric bike has been a great investment.
Emilio Vargas (verified owner) –
This electric bike is perfect for city riding.
Caleb Adams (verified owner) –
The battery range is more than enough for my needs.
Matthew Wilson (verified owner) –
The build quality feels solid and well made.
Dylan Scott –
The display panel is clear and easy to read.
Rafael Ortega –
The motor kicks in smoothly without any jerky movements.
Zachary Wright –
The design is sleek and modern. I get compliments all the time.
Samuel Hall –
It’s perfect for city riding. Quick, quiet, and very convenient.
Daniel Williams –
The battery charges faster than I expected.
James Carter (verified owner) –
This e-bike feels thoughtfully designed.
Victor Flores –
Assembly was easy, and I was riding within an hour.
Miles Hughes (verified owner) –
The ride quality is smooth and stable.
Victor Flores –
I’ve replaced most of my car trips with this bike.
Victor Flores –
Charging is simple and doesn’t take too long.
Christian Hill –
Assembly was easy, and I was riding within an hour.
Tyler Walker (verified owner) –
This electric bike makes my commute stress free.
Eric Murphy –
It’s a great alternative to public transportation.
Trevor Howard –
The motor kicks in smoothly without any jerky movements.
Evan Ward –
The range is exactly what I needed for my daily use.
Patrick Richardson –
I switched to an e-bike for my daily commute, and it’s honestly been a game changer.
Andrew Johnson –
The brakes are responsive and give me confidence while riding.
Blake Foster –
The brakes are responsive and give me confidence while riding.
Luis Morales –
It’s perfect for city riding. Quick, quiet, and very convenient.
Brian Moore –
The range is exactly what I needed for my daily use.
Pablo Fuentes –
Battery life is impressive—I can go days without needing a recharge.
Nicholas Clark –
It handles hills like a pro—no more struggling or getting tired.
Kyle Cox (verified owner) –
I love how flexible it is for different riding styles.
Benjamin Young –
I use it for errands, and it saves me a lot of time and money.
Jacob Rogers –
This e-bike exceeded my expectations.
Emilio Vargas –
It’s fast enough to be fun but still feels safe and controlled.
Nicholas Clark –
I use it for errands, and it saves me a lot of time and money.
Daniel Williams –
The build quality is solid, and everything feels well put together.