ePedaler
Menu

Sun Seeker E-Eco Tad B1 SX Electric Tadpole vs TerraTrike ChargeE-Eco Tad B1 SX Electric Tadpole vs Charge

Both checked Sep 2026 against manufacturer pages
+ Add a third model
Sun SeekerSun Seeker
E-Eco Tad B1 SX Electric Tadpole
Model page Where to buy Remove Sun Seeker E-Eco Tad B1 SX Electric Tadpole
TerraTrikeTerraTrike
Charge
Model page Where to buy Remove TerraTrike Charge
Key differences

What actually differs

Both one rider.
Weight
TerraTrike is 10 lb lighter
Sun Seeker
68 lb
TerraTrike
57.8 lb
Rider limit
Only Sun Seeker publishes one
Sun Seeker
300 lb
TerraTrike
Not published
We can't confirm TerraTrike's rider limit.
Battery
Sun Seeker has 35% more
Sun Seeker
504 Wh
TerraTrike
374 Wh
Verdict

Which one for you

  • Easiest to lift or carry
    TerraTrike Charge
    10 lb lighter overall.
  • Heavier riders
    Sun Seeker E-Eco Tad B1 SX Electric Tadpole
    The only one with a published rider limit (300 lb).
  • Longest rides
    Sun Seeker E-Eco Tad B1 SX Electric Tadpole
    Larger battery. Both range claims are the brand's, not tested.
Full specs

Side by side

SpecSun Seeker E-Eco Tad B1 SX Electric TadpoleTerraTrike Charge
Fit
Rider height
Not published by brand
X-seam 37"-46"
Seat height
15 - 17" (38-43 cm)
16 in
Rider limit
300 lbBetter
Not published by brand
Total load
Not published by brand
275 lb
Seats
1 rider
1 rider
Motor
Rated power
350W
250W
Torque
55 NmBetter
43 Nm
Battery
Capacity
504 WhBetter
374 Wh
Voltage and amp-hours
48V · 10.5Ah
—
Range and speed
Claimed range
Eco PAS mostly pedaling 42-48 mi; throttle-only 23-28 mi
Not published by brand
Top speed
15 mph
Not published by brand
E-bike class
Class 2
Not published by brand
Size and folding
Weight
68 lb
57.8 lbBetter
Wheels
20" front and rear
20"
Brakes and drivetrain
Brakes
Promax disc (front), 160mm rotor
Alhonga Mechanical (brake set); Promax Linear Pull, Locking levers
Parking brake
Yes
Yes
Gears
SunRace 7-speed, 13-32T
8 speeds
Comfort and safety
Certifications
ACT Lab tested to UL 2849, UL 2271 and CPSC
Not published by brand
List price
Price
$3,849.99
$3,550Better

"Better" marks the stronger figure where one clearly exists. Range and battery claims are the brand's own. "~" means we calculated it. "—" means we haven't checked it yet. Sources and any conflicting figures are on each model page.