TrikeOn sale
E-Eco Tad B1 SX Electric Tadpole
A one-rider trike with a 300 lb rider limit.
- Motor
- 350W · 55 Nm
- Battery
- 504 Wh
- Range, claimed
- Eco PAS mostly pedaling 42-48 mi; throttle-only 23-28 mi
- Top speed
- 15 mph
- Folded
- Not published
- List price
- $3,849.99
Available at
Still collecting: retailer links
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✓ Specs checked Sep 28, 2026against sunseeker.bike · sources for each spec
Specifications
Fit
- Step-over height
- Not published by brandsunseeker.bike ↗ · checked Sep 28, 2026
- Rider height
- Not published by brandsunseeker.bike ↗ · checked Sep 28, 2026
- Seat height
- 15 - 17" (38-43 cm)sunseeker.bike ↗ · checked Sep 28, 2026
- Rider limit
- 300 lb136 kgsunseeker.bike ↗ · checked Sep 28, 2026
- Total load
- Not published by brandsunseeker.bike ↗ · checked Sep 28, 2026
- Seats
- 1 ridersunseeker.bike ↗ · checked Sep 28, 2026
Motor
- Rated power
- 350Wsunseeker.bike ↗ · checked Sep 28, 2026
- Peak power
- Not published by brandsunseeker.bike ↗ · checked Sep 28, 2026
- Torque
- 55 Nmsunseeker.bike ↗ · checked Sep 28, 2026
Battery
- Capacity
- 504 Whstated by brandsunseeker.bike ↗ · checked Sep 28, 2026
- Voltage and amp-hours
- 48V · 10.5Ahsunseeker.bike ↗ · checked Sep 28, 2026
- Battery weight
- Not published by brandsunseeker.bike ↗ · checked Sep 28, 2026
Range and speed
- Claimed range
- Eco PAS mostly pedaling 42-48 mi; throttle-only 23-28 misunseeker.bike ↗ · checked Sep 28, 2026
- Top speed
- 15 mph24 km/hsunseeker.bike ↗ · checked Sep 28, 2026
- E-bike class
- Class 2has a throttlesunseeker.bike ↗ · checked Sep 28, 2026
Size and folding
- Folds
- Not published by brandsunseeker.bike ↗ · checked Sep 28, 2026
- Folded size
- Not published by brandsunseeker.bike ↗ · checked Sep 28, 2026
- Weight
- 68 lb31 kgsunseeker.bike ↗ · checked Sep 28, 2026
- Wheels
- 20" front and rearsunseeker.bike ↗ · checked Sep 28, 2026
Brakes and drivetrain
- Brakes
- Promax disc (front), 160mm rotorsunseeker.bike ↗ · checked Sep 28, 2026
- Parking brake
- Yessunseeker.bike ↗ · checked Sep 28, 2026
- Gears
- SunRace 7-speed, 13-32Tsunseeker.bike ↗ · checked Sep 28, 2026
- Rear differential
- Not published by brandsunseeker.bike ↗ · checked Sep 28, 2026
- Reverse
- Not published by brandsunseeker.bike ↗ · checked Sep 28, 2026
Comfort and safety
- Suspension
- Not published by brandsunseeker.bike ↗ · checked Sep 28, 2026
- Certifications
- ACT Lab tested to UL 2849, UL 2271 and CPSCsunseeker.bike ↗ · checked Sep 28, 2026
Documents
Sun Seeker E-Eco Tad B1 SX Electric Tadpole manuals and PDFs
A PDF disagrees with the product page. The manual gives 25–35 miles in eco mode; the product page says 42–48 miles. The spec sheet above uses the product page.
- Owner's manuale-ECO TAD B1 SX Supplemental Owner's Manual (Assembly & User Guide)PDF · from sunseeker.bike · REV 08.2025
- Owner's manualSun Seeker Owner's ManualPDF · from sunseeker.bike · covers all models
- CertificateUN-38.3 - 48V/10.5AH BatteryPDF · from sunseeker.bike · covers 48V/10.5Ah battery used on B1 SX e-trikes
- DocumentBattery Safety Manual (13 languages)PDF · from sunseeker.bike · covers all e-models
- DocumentMSDS - 48V/10.5AH BatteryPDF · from sunseeker.bike · covers 48V/10.5Ah battery used on B1 SX e-trikes
- DocumentX-Seam Measuring GuidePDF · from sunseeker.bike · covers all models
Files hosted by the brand, found Sep 28, 2026. The spec sheet above comes from the brand's product page.
Legal in your state
Can I ride it where I live?
Sun Seeker sells this as Class 2, with a 15 mph top speed.
✓ Class 2 e-bike in California
throttle, 15 mph
- License, registration
- No driver's license, registration, license plate or insurance is needed for a legal e-bike or e-trike, and it is not a motor vehicle.
- Helmet
- Riders and passengers under 18 must wear a bicycle helmet on any bike, including an e-bike.
- Minimum age
- Riders must be 16 or older to operate a Class 3. State law sets no minimum age for Class 1 or 2, but pilot laws let San Diego County and Marin County set local limits (see local_notes).
- Where you can ride
- E-bike riders have the same road rights and duties as bicyclists, including use of bike lanes.
Last verified Sep 2026 · Read the statute ↗ · Full California guide · Not legal advice.
⚠ Not covered by the e-bike law
New Jersey's e-bike law leaves trikes out. See what that means for trikes below.
- License, registration
- Riders 17+ need a valid driver's license of any class or a moped (e-bike) license/permit; riders 15-16 need a moped (e-bike) license or permit; bike-share renters 16+ are exempt.
- Helmet
- Motorized bicycle riders of every age must wear an approved helmet.
- Minimum age
- No one under 15 may ride a low-speed e-bike or motorized bicycle.
- Where you can ride
- Motorized bicycles may not use interstates, median-divided highways, roads posted over 50 mph, or the GSP/Turnpike/AC Expressway.
Last verified Sep 2026 · Read the statute ↗ · Full New Jersey guide · Not legal advice.
✓ Class 2 e-bike in Florida
throttle, 15 mph
- License, registration
- No driver license needed for any e-bike class.
- Helmet
- Riders and passengers under 16 must wear a bicycle helmet; no state helmet rule for 16+.
- Minimum age
- No statewide minimum age, but since July 1, 2025 cities/counties may set minimum ages and require riders to carry government photo ID.
- Where you can ride
- You may ride anywhere a regular bicycle is allowed, including streets, shoulders, bike lanes and multi-use paths.
Last verified Sep 2026 · Read the statute ↗ · Full Florida guide · Not legal advice.
✓ Class 2 e-bike in New York
throttle, 15 mph
- License, registration
- No driver's license, registration or insurance is needed for a legal Class 1-3 e-bike.
- Helmet
- All Class 3 riders must wear a helmet; for Class 1 and 2 no state helmet rule applies to adults (localities may require helmets).
- Minimum age
- Riders must be at least 16.
- Where you can ride
- E-bikes may be ridden on roads with a posted speed limit of 30 mph or less, and in bike lanes; Class 3 only in New York City.
Last verified Sep 2026 · Read the statute ↗ · Full New York guide · Not legal advice.
Compare with
Sun Seeker E-Delta B1 SX Electric Delta
| This trike | E-Delta B1 SX Electric Delta | |
|---|---|---|
| Step-over | Not published | Not published |
| Total load | Not published | Not published |
| Weight | 68 lb | 79.5 lb |
| Top speed | 15 mph | 15 mph |
Compare with
TerraTrike Charge
| This trike | Charge | |
|---|---|---|
| Step-over | Not published | Not published |
| Total load | Not published | 275 lb |
| Weight | 68 lb | 57.8 lb |
| Top speed | 15 mph | Not published |
Similar models
See all trikes Will it fit me?
Your measurements against Sun Seeker's limits
Height
5′6″
168 cm
Weight
180 lb
82 kg
Rider height
Weight and load
Rider 300 lb
Step-over
Bike: 68 lb