Head-to-head comparison
DEEPOWER QS7 vs Jasion RetroVolt 330
Spec-verified head-to-head
The DEEPOWER QS7 beats the Jasion RetroVolt 330 for most riders, with a 960 Wh battery and a 750 W rated motor; buy the Jasion to carry a passenger. DEEPOWER's manual says the QS7 ships limited to 15.5 mph, inside Class 2 (its Amazon title advertises 28 mph), and Jasion's store lists the RetroVolt at 30 mph, which fits no US e-bike class. At our last check the QS7 cost $589.99 (as of Sep 16, 3:16 PM EDT, subject to change) and the RetroVolt $539.99 (as of Sep 16, 3:16 PM EDT, subject to change).
Who wins each category
- CargoJasion RetroVolt 330
- MotorTie
- RangeDEEPOWER QS7
- ValueDEEPOWER QS7
- BatteryDEEPOWER QS7
- ComfortTie
- LegalityDEEPOWER QS7
| Spec | DEEPOWER QS7 | Jasion RetroVolt 330 |
|---|---|---|
| Battery | 960 Wh | 720 Wh |
| Range | 35 mi | 32 mi |
| Top speed | 28 mph | 30 mph |
Highlighted cells mark the stronger spec. Our overall pick: DEEPOWER QS7.
Pick DEEPOWER QS7 if
Pick the DEEPOWER QS7 if you want the biggest battery in the retro fat-bike format, a 48 V 20 Ah (960 Wh) pack, with a 750 W rated motor in DEEPOWER's manual and a documented nitrogen rear shock, for $589.99 (as of Sep 16, 3:16 PM EDT, subject to change). Keep the speed limiter in place: the manual says it ships at 15.5 mph, inside Class 2, and unplugging the limiter takes it to 30 mph, above Class 3. Plan on about 35 miles, and budget for 75 lb and mechanical brakes.
Pick Jasion RetroVolt 330 if
Pick the Jasion RetroVolt 330 if you want to carry a passenger on short trips, on a bench Jasion markets for it with a 330 lb payload, or if you want the bike that was #1 in Amazon's Electric Fat Bikes in September 2026, for $539.99 (as of Sep 16, 3:16 PM EDT, subject to change). Its 720 Wh pack gives about 30-35 miles, it publishes no rated wattage, and Jasion's store lists 30 mph, so as described it fits no US e-bike class.
Quick answer: DEEPOWER QS7 or Jasion RetroVolt 330?
- Buy the DEEPOWER QS7 if range matters. Its 48 V 20 Ah pack is 960 Wh, a third more than the RetroVolt's 720 Wh.
- Buy the DEEPOWER QS7 if you want a bike that can be kept inside a legal class. DEEPOWER's manual publishes a 750 W rated motor and a 15.5 mph shipping limit. The RetroVolt publishes no rated wattage.
- Buy the Jasion RetroVolt 330 if you want to carry a passenger. Its bench is marketed for short passenger trips; our QS7 review records no passenger claim.
- Buy the Jasion RetroVolt 330 if you want the chart leader. It was #1 in Amazon's Electric Fat Bikes in September 2026, against #3 for the QS7.
Side-by-side specs
Every figure is the seller's or maker's own claim, as recorded in our two reviews. The QS7's documents contradict each other, so where they disagree the table lists every figure and its source. We have not ridden either bike.
| Spec | DEEPOWER QS7 | Jasion RetroVolt 330 |
|---|---|---|
| Price (Amazon US) | $589.99 (as of Sep 16, 3:16 PM EDT, subject to change) | $539.99 (as of Sep 16, 3:16 PM EDT, subject to change) |
| Amazon rank (September 2026) | #3 in Electric Fat Bikes | #1 in Electric Fat Bikes |
| Motor, rated | 750 W (DEEPOWER user manual); the Amazon listing states none | Not published |
| Motor, peak | 2000 W (Amazon title); 1500 W (manual) | 2000 W (listing) |
| Torque | 90 Nm (product page and manual) | 99 Nm (listing); 90 Nm in Jasion's spec table |
| Battery | 960 Wh, 48 V 20 Ah (listing and manual) | 720 Wh, 48 V 15 Ah (listing) |
| Stated top speed | 28 mph (Amazon title); 20 mph (second Amazon listing); 30 mph (product page); 15.5 mph as shipped and 30 mph with the limiter removed (manual) | None on the listing; 30 mph on Jasion's store |
| Legal class | Class 2 as limited to 15.5 mph; no class at 28 mph with a throttle; above Class 3 at 30 mph | None as described (30 mph is above Class 3) |
| Range claim / manual / our planning figure | 70 mi electric, 100 mi pedal assist / 25-30 mi electric, 35-50 mi pedal assist / about 35 mi | Up to 70 mi / none / 30-35 mi |
| Suspension | 150 mm inverted front fork plus a central nitrogen rear shock (DEEPOWER) | Front fork plus a coil rear shock visible in Jasion's photos |
| Brakes | Mechanical disc, 160 mm rotors (DEEPOWER) | Hydraulic disc in Jasion's infographic; not in the Amazon bullets |
| Weight | 75 lb (manual, 20 Ah version) | Not published |
| Payload | 330 lb (manual; product page says 440 lb) | 330 lb |
| Passenger | No passenger claim | Bench marketed for short passenger trips |
| Rider height | 5'3" to 6'5" (160-195 cm) | 5'4" to 6'3" |
| Warranty | One year (Amazon listing); DEEPOWER's site also describes two years | Not documented in our review |
| Certifications | None named on Amazon. Site-linked UL 2849 report from CTG, a Shenzhen lab, names the S7, not the QS7. UL 2271 report from TÜV Rheinland covers DEEPOWER battery models not tied to this listing | "UL-certified battery safety protection" claimed; no standard, lab or certificate named |
| Extras | Front and rear turn signals, Shimano 7-speed, 90% pre-assembled | Headlight with horn, rear brake light, five riding modes, 7-speed, 85% pre-assembled |
Which is faster, the DEEPOWER QS7 or the Jasion RetroVolt 330?
On paper they tie at 30 mph: DEEPOWER's manual gives 30 mph with the speed limiter removed, and Jasion's store lists the RetroVolt 330 at 30 mph. The difference is how each arrives. DEEPOWER's manual says the QS7 ships limited to 15.5 mph and reaches 30 mph once a wire harness under the seat bag is unplugged, while its Amazon title says 28 mph, a second Amazon listing says 20 mph and its product page says 30 mph. The RetroVolt's Amazon listing states no top speed at all. The manual itself warns that lifting the QS7's limit "may bring legal risks".
Which is street legal?
The DEEPOWER QS7 can be street legal as its manual says it ships, and the Jasion RetroVolt 330 cannot be shown to be legal as its maker describes it. The US three-class system caps Class 1 and Class 2 at 20 mph and Class 3 at 28 mph with pedal assist only, and the federal consumer-product definition in 15 U.S.C. §2085 is written around 750 W rated output. A peak figure is not a rated figure.
- DEEPOWER QS7: the 750 W rated figure comes from DEEPOWER's manual (the Amazon listing gives only 2000 W peak, and the manual's peak is 1500 W, so the two may not describe identical hardware). Limited to 15.5 mph as the manual says it ships, it sits inside Class 2. At the 28 mph in the Amazon title, with the throttle the manual shows, it fits no class in most states. With the limiter removed, 30 mph is above Class 3.
- Jasion RetroVolt 330: the listing gives a 2000 W peak and no rated wattage, and Jasion's store lists 30 mph, faster than Class 3 allows. As described, it fits no US e-bike class. A 20 mph display limit, if the menu offers one, fixes the speed but not the missing rated figure.
Whether the QS7 is legal depends on a wire under the seat, so leave the limiter in place for bike lanes and paths. New Jersey and Hawaii also require e-bike registration. Check your state on the street-legal-by-state guide.
Which goes further on a charge?
The DEEPOWER QS7 goes further, because its 960 Wh battery is a third larger than the RetroVolt 330's 720 Wh. Realistic e-bike consumption is 15-30 Wh per mile, and both bikes sit toward the top of that range. At 20-30 Wh per mile the QS7 works out at 32-48 miles and the RetroVolt at 24-36 miles. Our planning figures are about 35 miles for the QS7 and 30-35 miles for the RetroVolt.
- QS7 claims: 70 miles electric and 100 miles pedal assist on the primary listing. The 100 needs 9.6 Wh per mile, which fails the arithmetic. DEEPOWER's own manual quotes 25-30 miles electric and 35-50 miles pedal assist for the 20 Ah pack.
- RetroVolt claim: "up to 70 miles" from 720 Wh needs 10.3 Wh per mile, which also fails the arithmetic.
The QS7 listing title's "35-180 miles" spans three battery options; the 180 would need the 60 Ah pack, a different and more expensive configuration.
Which is better for two riders?
The Jasion RetroVolt 330 is the better choice for two riders, because its bench is marketed for short passenger trips and our QS7 review records no passenger claim from DEEPOWER. Both bikes carry a 330 lb payload rating (the QS7's from its manual; DEEPOWER's product page says 440 lb), and that limit has to cover both riders plus anything carried, which two average adults can exceed. Many states restrict carrying a passenger on a bicycle not designed and equipped for it, so check local rules first.
Which has better suspension?
Both have a real rear shock, and the DEEPOWER QS7's is the better documented. DEEPOWER lists a 150 mm inverted front fork and a centrally mounted nitrogen rear shock, and its product photos show both. Jasion's photos show a coil rear shock under the RetroVolt 330's seat frame plus a front fork, with no travel published. Neither setup is a sprung seatpost sold as "dual suspension". Braking differs on paper: DEEPOWER specifies mechanical discs on a 75 lb bike, and Jasion's infographic names hydraulic discs that the Amazon bullets do not mention.
Which is safer to charge indoors?
Neither the DEEPOWER QS7 nor the Jasion RetroVolt 330 documents UL 2849 (the complete e-bike electrical system) for the model you would receive. DEEPOWER's product page links a UL 2849 test report from CTG, a Shenzhen lab, that covers models S7, S7-1 and S7-2, not the QS7, and a UL 2271 battery report from TÜV Rheinland for battery models HL4820-M48-G80 and HY4820-M48-Y52, which nothing on the Amazon listing ties to the pack you would get. Jasion's listing claims "UL-certified battery safety protection" without naming a standard. If your building requires UL 2849 for indoor charging, ask the seller for a report that names the exact model.
Verdict
For most riders the DEEPOWER QS7 is the better buy. It carries a third more battery, publishes a 750 W rated motor in its manual, documents a rear shock and a 150 mm fork, and can be kept inside Class 2 by leaving the speed limiter in place, for $589.99 (as of Sep 16, 3:16 PM EDT, subject to change). The trade is paperwork that disagrees with itself: four top speeds, two peak wattages, a range claim its own manual contradicts, and a UL 2849 report for a different model.
Buy the Jasion RetroVolt 330 instead if you want to carry a passenger, or if you simply want the bike that led Amazon's Electric Fat Bikes chart in September 2026, for $539.99 (as of Sep 16, 3:16 PM EDT, subject to change). Treat it as a moped-style bike for private land, because Jasion's own 30 mph figure puts it outside every US e-bike class.
Read the full DEEPOWER QS7 review and the full Jasion RetroVolt 330 review. For the #2 bike in the same chart, see Jasion RetroVolt 330 vs TST Fat Retro. For fat-tire bikes whose class can be placed without a limiter wire, see the best fat tire electric bikes under $1,000.
Frequently asked questions
DEEPOWER QS7 or Jasion RetroVolt 330: which should I buy?
Buy the DEEPOWER QS7 unless you plan to carry a passenger. The QS7 has a 960 Wh battery against the RetroVolt's 720 Wh, and DEEPOWER's manual publishes a 750 W rated motor and a 15.5 mph shipping limit that sits inside Class 2. The Jasion RetroVolt 330 has a bench marketed for short passenger trips, but it publishes no rated wattage and Jasion's store lists it at 30 mph, above every US class. At our last check the QS7 cost $589.99 (as of Sep 16, 3:16 PM EDT, subject to change) and the RetroVolt $539.99 (as of Sep 16, 3:16 PM EDT, subject to change).
What are people saying about the DEEPOWER QS7 e-bike?
We have not surveyed DEEPOWER QS7 owners or ridden the bike, so we report what DEEPOWER's own documents say, and they disagree with each other. The Amazon title says 28 mph, a second listing 20 mph, the product page 30 mph, and the manual 15.5 mph as shipped. The listing claims 100 miles with pedal assist, while the manual says 35-50. The UL 2849 report on DEEPOWER's site names the S7, not the QS7. The hardware list is strong: 960 Wh, a 750 W rated motor and a nitrogen rear shock.
What is the number one selling ebike in America?
No one publishes US e-bike sales totals, but on Amazon US the Jasion RetroVolt 330 had the best overall sales rank of any e-bike we track in September 2026: #1 in Electric Fat Bikes and #2,614 in Amazon's overall ranking. Amazon ranks are relative and move constantly, and they cover Amazon only, not bike shops or brand websites. In the same chart the TST Fat Retro was #2 and the DEEPOWER QS7 #3.
Is the DEEPOWER QS7 street legal?
The DEEPOWER QS7 is inside Class 2 only while its speed limiter stays in place. DEEPOWER's manual states a 750 W rated motor and says the bike ships limited to 15.5 mph. The Amazon title advertises 28 mph, which with a throttle fits no class in most states, and with the limiter wire unplugged the manual gives 30 mph, above Class 3. New Jersey and Hawaii also require e-bike registration. Check your state on the street-legal-by-state guide.
Is the Jasion RetroVolt a good bike?
The Jasion RetroVolt 330 is well equipped for the money, with gaps in the paperwork. For $539.99 (as of Sep 16, 3:16 PM EDT, subject to change) its listing states a 2000 W peak motor, 99 Nm, a 720 Wh removable battery, front and rear suspension and a passenger bench. It gives no rated wattage, Jasion's store lists 30 mph (above Class 3), its 70-mile range claim fails the arithmetic, and its UL claim names no standard. Next to the DEEPOWER QS7 it has less battery and no published rated motor.
Are Jasion bikes good quality?
We cannot rate Jasion's build quality because we have not ridden a Jasion bike, and its documentation varies by model. The RetroVolt 330 listing and Jasion's store disagree on battery (15 Ah against 18 Ah) and torque (99 Nm against 90 Nm), and its UL claim names no standard. Other Jasion models publish more: the EB5 MAX states a 750 W rated motor and a 28 mph Class 3 speed, and the Roamer ST names UL 2849 in its listing title.
Which has the bigger battery, the DEEPOWER QS7 or the Jasion RetroVolt 330?
The DEEPOWER QS7 has the bigger battery: 960 Wh (48 V 20 Ah) against the Jasion RetroVolt 330's 720 Wh (48 V 15 Ah on its Amazon listing). That is a third more capacity. Our planning figures are about 35 miles for the QS7 and 30-35 miles for the RetroVolt. Both listings overstate range: the QS7's 100-mile pedal-assist claim needs 9.6 Wh per mile, and DEEPOWER's own manual quotes 35-50 miles for that pack.
Is the DEEPOWER QS7 UL certified?
UL certification is not documented for the DEEPOWER QS7. The Amazon listing names no UL standard. DEEPOWER's site links a UL 2849 test report from CTG, a Shenzhen lab, that covers the S7, S7-1 and S7-2, not the QS7, and a UL 2271 battery report from TÜV Rheinland for battery models that nothing on the listing ties to the QS7's pack. The Jasion RetroVolt 330 claims a UL-certified battery without naming a standard. Ask for a QS7-specific UL 2849 report if you need one.
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