DUAL BATTERY · VTUVIA

VTUVIA Gemini

Name: VTUVIA Gemini
Brand: VTUVIA
Price: 1899 USD

The longest range VTUVIA claims, and a battery description we cannot turn into a number.

$1,899$2,199−14%

Merchant price, checked 2026-08-27. Verify before buying.

Check price at VTUVIA Full specifications

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1000W
Motor Capacity
100 Nm
Motor Torque
90 Miles
Claimed Range
Dual 52V 21Ah
Battery (as published)

Colours the merchant lists

Champagne-Torque Sensor
Blue-Torque Sensor

Specifications transcribed from VTUVIA’s product page on 2026-08-27. We have not ridden this bike.

Our verdict — DUAL BATTERY

The Gemini is the bike on this site we find hardest to place, and the reason is a single sentence of the merchant’s copy. The motor is straightforward: 1000W rated, 1500W peak and 100 Nm, more torque than any other VTUVIA except the mid-drive FMB, and well ahead of the 85 Nm SF20H and SX20. The torque sensor is named in the colour option itself. What we cannot do is the arithmetic everyone actually wants, because VTUVIA describes the battery as "Dual 52V 21Ah LG-certified batteries" and never says whether that is two packs or one system loosely described. 52V × 21Ah is 1,092Wh. If there are two, this is 2,184Wh and by a wide margin the largest capacity on this site; if there is one, it sits just below AMYET’s 1,200Wh S8. At $1,899 that is the difference between $0.87 and $1.74 per watt-hour — a factor of two — so we print no capacity and no price per watt-hour until VTUVIA says which it is. Everything else here is good. The number that would settle whether it is exceptional is missing.

Buy it if

You climb, and you want the number that predicts climbing: at 100 Nm only the mid-drive FMB, at twice the price, states more torque.
You want a torque sensor without moving to a mid-drive.
You ride far enough that a second pack would change your day, and you are prepared to confirm the total capacity with VTUVIA before ordering.
You want 26 × 4-inch tires — more rolling comfort than VTUVIA’s 20-inch folders on the same sort of ground.

Skip it if

You want to compare energy value across bikes. Until VTUVIA resolves the battery description, the Gemini cannot be placed on that table at all.
You are a heavier rider or carry cargo. No payload figure is published — only the word "heavy".
You need a stated speed and class before you ride on shared paths. Neither is published here.
You want the paperwork. The SF20H states UL 2271 and UL 2849 for $500 less; this listing states neither.

$1,899$2,199−14%

Merchant price, checked 2026-08-27. Verify before buying.

Check price at VTUVIA

What we like

100 Nm — more torque than any VTUVIA but the mid-drive FMB
Torque sensor stated outright, in the option values themselves
Hydraulic disc brakes and a hydraulic front fork
26 × 4-inch fat tires for rough ground
Two batteries described, whatever the total proves to be — nothing else in VTUVIA’s range offers a second pack
Up to 90 miles claimed, the longest VTUVIA publishes

What gives us pause

The battery is described as "dual 52V 21Ah" with no total capacity, so no price per watt-hour can be calculated
No payload figure — the listing offers "heavy loads" instead of a number
No top speed or class stated
No weight, frame, drivetrain, rider height or charge time published
No UL standard named; "LG-certified" describes the cell supplier, not a safety test
At $1,899 it is the most expensive bike VTUVIA sells short of the FMB, on one of the least complete specification sheets in the range

Why this bike is here

VTUVIA lists the Gemini in its own Best Sellers collection, checked on 2026-08-27. That is the merchant’s claim about what sells, not a measurement of ours — we have no sales data for any bike on this site, and neither does anyone outside VTUVIA.

A rider standing with the VTUVIA Gemini on open ground

VTUVIA Gemini being ridden through rough terrain

Two VTUVIA Gemini bikes loaded on a vehicle rack

Specifications

What VTUVIA publishes about the Gemini

Merchant claims on the left of each row, our reading indented beneath. Where the merchant publishes nothing, the row says so.

Every figure below is the merchant's own published claim, transcribed from their product page on 2026-08-27. Indented notes are ours. We have not ridden this bike and we do not publish measurements we did not take.

Motor & performance

Rated motor

1000W brushless motor

VTUVIA states the output but not the motor’s position on this listing.

Peak motor

1500W peak

Peak is a short-burst figure. The rated 1000W is what the bike holds on a sustained climb.

Motor torque

100 Nm

More torque than any other VTUVIA except the FMB, whose Bafang mid-drive states 160 Nm — and well ahead of the 85 Nm shared by the SF20H and the SX20, and the 65 Nm of the Zeal LT7. Torque is what a hill asks for; watts only describe how fast energy is delivered.

Top speed

Not published

VTUVIA publishes no speed figure or class for the Gemini, where they state 20 MPH Class 2 for the SF20H, SX20 and Zeal LT7. Ask before you assume it ships limited.

Assist sensor

Torque sensor — named inside the colour option values, "Champagne-Torque Sensor" and "Blue-Torque Sensor"

An odd place to state a specification, but it is stated. Assist scales with how hard you push rather than switching on when the cranks turn, which is the same behaviour that makes the Zeal LT7 our best-value pick.

Battery & range

Battery

Dual 52V 21Ah LG-certified batteries

VTUVIA’s exact words. "LG-certified" is the listing’s phrase and is not a safety standard — it describes the cell supplier, not a test the bike has passed.

Energy capacity

Dual 52V 21Ah LG-certified batteries

We are not printing a watt-hour figure for this bike, and the reason is worth setting out. 52V × 21Ah = 1,092Wh. VTUVIA says "dual" and then never says whether that means two of those packs or one system built from two halves. Two would be 2,184Wh, comfortably the largest capacity on this site; one would be 1,092Wh, just under AMYET’s 1,200Wh S8. The consequences are not small: at $1,899 the price per watt-hour is either $0.87 (2,184Wh) or $1.74 (1,092Wh), and $0.87 would make this among the best energy value we cover while $1.74 would make it ordinary. A factor of two is not a rounding difference, so we cannot compute a price per watt-hour for the Gemini until VTUVIA is clearer, and we will not publish a capacity we would have to guess at. If it matters to your decision, ask VTUVIA to confirm the total watt-hours in writing before you order.

Claimed range

Up to 90 miles

The claim itself hints at the answer to the battery question without settling it. 90 miles on a 26 × 4-inch fat tire needs somewhere near 20Wh per mile, or about 1,800Wh. One 1,092Wh pack would have to manage 12.1Wh per mile to reach 90, which a fat tire rarely does with an adult aboard; two packs at 2,184Wh would need 24.3Wh per mile, which is ordinary. So the 90-mile figure reads like a two-pack number — but reading like one is not the same as being told, and we are not going to print a capacity on the strength of an inference.

Charge time

Not published

Not stated — and on a bike whose battery may hold 2,184Wh, charge time is not a small unknown.

Frame & running gear

Frame

Not published

Wheel size

26 inch

Tire

26" × 4" fat tire

Suspension

Hydraulic front fork

Front only. VTUVIA names the damping but not the travel, where they publish 80mm for the Zeal LT7.

Brakes

Hydraulic disc brakes

Rotor size is not published here, where VTUVIA states 180mm for the SF20H, SX20 and Zeal LT7.

Drivetrain

Not published

No gear count or derailleur is stated for the Gemini, where VTUVIA names Shimano 7-speed on the rest of the range.

Display

LCD display

Fit & limits

Max payload

Not published

The listing says the bike handles "heavy loads" and gives no figure. That is a phrase, not a specification. VTUVIA publishes 330 lb for the SF20H and SX20 and 350 lb for the Zeal LT7, so the omission here is a choice rather than a house style, and if you are a heavier rider you should ask for the number before ordering.

Bike weight

Not published

Rider height

Not published

Water resistance

Not published

Buying it

Certification

Not stated on the product listing

The listing describes the cells as "LG-certified", which names a supplier rather than a standard. VTUVIA states UL 2271 and UL 2849 for the SF20H, so we know they publish real certifications where they hold them, and we do not read a supplier name as one.

Warranty

Not published

VTUVIA states a two-year frame warranty on other listings; nothing is stated on this one and we do not carry it across.

Assembly

Not published

In the box

Not published

Shipping

Not published

Returns

See VTUVIA’s published return policy at checkout

Questions

Gemini — common questions

How big is the Gemini’s battery?

VTUVIA says "Dual 52V 21Ah LG-certified batteries" and does not say more. 52V × 21Ah works out at 1,092Wh, so the honest answer is either 1,092Wh or 2,184Wh depending on what "dual" means here, and VTUVIA does not tell us. We will not publish a figure we would be guessing at, because the two possibilities are a factor of two apart and would place this bike at opposite ends of the value table. Ask VTUVIA to confirm the total watt-hours in writing before you buy on the strength of the battery.

Why will you not just print the bigger number?

Because 2,184Wh would be the largest capacity on this site by a wide margin, and a superlative that turns out to rest on a loose piece of merchant copy is exactly the sort of thing this site exists not to do. If VTUVIA means two packs, the claim is theirs to make plainly, and we will print it the day they do.

Is 90 miles realistic?

It depends on the same unresolved question. A 26 × 4-inch fat tire on moderate assist tends to draw around 20Wh per mile, so 90 miles needs roughly 1,800Wh. Two 1,092Wh packs would cover that comfortably at about 24Wh per mile; a single 1,092Wh pack would have to average 12.1Wh per mile, which is very optimistic for a fat tire with an adult aboard. The claim is more plausible on the two-pack reading — which is a reason to ask, not a reason for us to assume.

What does the torque sensor change?

It changes how the help arrives. A cadence sensor notices that the pedals are turning and applies the assist level you selected; push harder and nothing changes. A torque sensor measures how hard you are pushing and scales the motor to match, so the bike surges as you stand on a climb and eases as you soft-pedal. VTUVIA states the Gemini has one by writing it into the colour option names.

Is the Gemini UL certified?

VTUVIA names no UL standard on this listing. The phrase it does use, "LG-certified", refers to the cell supplier and is not a safety certification. VTUVIA states UL 2271 and UL 2849 for the SF20H, so we know they publish those numbers where they have them, and we will not read a supplier’s name as a standard. If your building requires certification before you may charge indoors, this is not the bike to buy on trust.

The rest of the VTUVIA range