Dual Battery Electric Bike for Adults
- Electric Bicycle
- 20 inches
- 330 pounds
- 220800 Wh
- Better rated than 64%
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How it ranks among the 478 electric bicycles we track
4.6★ across 12 Amazon ratings, Bayesian-smoothed toward the category average.
12 Amazon ratings, weighted on a log scale so huge counts don't drown everything.
Brand identity, imagery, description and spec coverage.
The ProductDome score is separate from the Amazon rating shown above: it combines the Bayesian-smoothed Amazon rating with evidence volume, tracked demand, and data quality across the 478 electric bicycles we track - how the scorecard works · full electric bicycles data report. Confidence: limited - limited rating history.Last refreshed Jun 21, 2026. Data-computed, not a hands-on test. Compiled by the ProductDome Research Team.
Overview
The Philiam ET9 is a dual battery, dual motor electric bike built for long range riding, with a 52V 50Ah battery pack rated for 80 to 100 miles on electric power alone and up to 200 miles using pedal assist. Peak combined motor output is 3000 watts across two 1500-watt motors, with a top speed of 31 mph and 20x4 inch fat tires.
Long term owners who have put close to 1,500 miles on the ET9 describe it holding up well, which is notable for a lower cost dual battery bike. The main tradeoffs reviewers pointed to are the stock tires and a seat that can squeak over bumps, both minor next to the range and power on offer.
- 52V 50Ah dual battery, up to 200 miles range
- Peak 3000W dual motor, 1500W x2, 120 newton-meters torque
- 31 mph top speed, 20x4 inch fat tires
- 4-piston hydraulic disc brakes, 90 percent pre-assembled
Who it's for
Fits a rider who wants long range and real power, including carrying a passenger with the extended seat and footpegs, without paying for a premium brand. Less suited to anyone who wants a plush ride over rough terrain, since the ET9 has no rear shock.
What buyers say
From Amazon customer reviews.
Owners describe the ET9 as delivering strong value for a dual battery, dual motor e-bike, with one long-term reviewer reporting nearly 1,500 miles and no flat tires after about a year. Complaints were minor: stock tires that feel cheap, a seat that squeaks over bumps, and an owner's manual that did not match the bike's updated screen and features.
Strengths and trade-offs
Drawn from this product's published specifications.
- Stock tires described as feeling cheap by more than one reviewer
- Seat can squeak over bumps
- No rear shock
- Owner's manual reportedly out of date with recent hardware changes
Specifications
| Brand | Philiam |
|---|---|
| Dimensions & fit | |
| Wheel Size | 20 inches |
| Maximum Weight Recommendation | 330 pounds |
| Size | Large |
| Capacity & performance | |
| Bicycle Gear Shifter Type | Trigger |
| Bicycle Drivetrain Type | Derailleur |
| Number Of Speeds | 7 |
| Age Range Description | Adult |
| Power & efficiency | |
| Lithium Battery Energy Content | 220800 Wh |
| Power Source | Electric motor |
| Construction & materials | |
| Frame Material Type | Aluminum |
| Wheel Material | Aluminum |
| Color | Green |
| Included components | |
| Unit Count | 1 |
| Included Components | (1) 90% Assembly Bike; (2) Motor; (3) a Lithium Battery; (4) LCD Display; (5) Charger; (6) Front and Rear Fender ; (7) Front and Rear Suspension; (8) Headlight; (9) Tail Light; (10) Horn; (11) 2 Battery Keys; (12) User Manual; (13) 26'' Fat Tire; (14)Saddle and Seat Post; (15) Right and Left Pedal; (16) Kickstand; (17) Install Tools; |
| Warranty & support | |
| Warranty Type | Full |
| Warranty Description | 1 year |
| Other details | |
| Bike Type | Fat Tire |
| Suspension Type | Front |
| Electric Assist Type | pedelec |
| Is Assembly Required | No |
| Intended Riding Terrain | Mountain Terrain, Unpaved Trails |
| Additional Features | Basket, Digital Display, Durable, Headlight, Multi-Speed |
| Brake Style | Disc |
| Specific Uses For Product | Dirt Biking |
| Style Name | Classic |
| Derailleur Configuration | Rear |
| Theme | Sport |
Other Philiam electric bicycles
How it compares
This product against the closest alternatives we track in electric bicycles.
| Product | Amazon rating | Ratings | ProductDome score |
|---|---|---|---|
| Dual Battery Electric Bike for AdultsThis product | 4.6 / 5 | 12 | 2.7 / 5 |
| Wooken Electric Bike for Adults with 500W MotorWooken | 4.4 / 5 | 312 | 4.1 / 5 |
| TotGuard Electric BikeTotGuard | 4.4 / 5 | 286 | 4.1 / 5 |
| ANCHEER 14" Folding Electric Bike for TeensAncheer | 4.2 / 5 | 329 | 4.0 / 5 |
| Gotrax 16" Folding Electric BikeBrand | 4.4 / 5 | 555 | 4.0 / 5 |
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Questions about the Philiam electric bicycles
Common buyer questions answered straight from the product spec data - no fluff, no "it depends".
How far can the Philiam ET9 go on a single charge?
Philiam rates the dual 52V 50Ah battery setup for 80 to 100 miles on electric power alone, and up to 200 miles when using pedal assist.
Does the Philiam ET9 come assembled?
It arrives about 90 percent pre-assembled, and reviewers described setup as straightforward.
Can the Philiam ET9 carry a passenger?
Yes, it has an extended cushioned seat and button operated rear footpegs, which reviewers used for carrying a second rider.