Likebike UM1 Plus

Set side by side, the two listings differ in four places:

• Motor: 2000 W peak against the UM1's 1500 W peak. Likebike claims it climbs 30-degree inclines but gives no torque figure.
• Ignition: the Plus adds an NFC card you tap on the display to switch the bike on, pitched as anti-theft. It stops the electrics, and a thief can still wheel the bike away, so keep a proper lock.
• Assembly: 95% pre-assembled with a claimed tool-free setup in under 10 minutes, against 90% for the UM1.
• Battery claim: 48 V with either 20 Ah or 23 Ah depending on which part of the listing you read (see below).

Both carry a 365-day warranty. Three things the UM1 listing claimed are absent from the Plus title and bullets: IPX6 waterproofing, dual-piston hydraulic calipers and a 4-inch tyre width. The Plus may have all three, but we do not credit a feature the seller has not claimed.

The product title says "48V 23Ah UL Certified Battery". The battery bullet says "20Ah" in its heading and "48V 20Ah" in its text. The gap matters: 48 V x 23 Ah is 1,104 Wh, while 48 V x 20 Ah is 960 Wh, about 13% less. We publish the conservative 960 Wh until Likebike settles it, as we did when the UM1 listing put an "18Ah" heading over 48 V x 20 Ah text. Check the rating printed on the battery when it arrives.

Likebike claims up to 35 miles on the throttle alone and up to 55 miles with pedal assist. On the conservative 960 Wh pack, 35 miles works out at about 27 Wh per mile, believable for throttle-only riding on fat tyres. 55 miles needs about 17.5 Wh per mile, optimistic but possible for a lighter rider in a low assist level on flat ground. If the pack really is 1,104 Wh, those figures become 31.5 and 20 Wh per mile, both comfortable.

Neither claim asks for impossible efficiency. Plan on about 35 miles of mixed riding with some throttle, and less if you lean on the full 2000 W peak. At a typical 20-25 Wh per mile in steady pedal-assist riding, 960 Wh stretches to 38-48 miles.

Like the UM1, the Plus listing never states a top speed. The first bullet promises "sustained top speed" without giving a number. Top speed decides which of the three US classes a bike belongs in, so its class cannot be determined from the listing. A 2000 W peak motor on fat tyres will almost certainly exceed 20 mph, so assume it sits above Class 2 until you have it in front of you.

Wattage does not settle it either. The listing gives only the 2000 W peak. The federal definition of a low-speed electric bicycle at 15 U.S.C. § 2085 is written around 750 W of rated (continuous) output, and peak is a momentary maximum, such as during a hill start. Without a rated figure there is no way to show compliance from this listing. Capping the speed at 20 mph, if the display allows it, does not create the missing rated figure.

Until you know more, treat it as a bike for private land and for off-road trails where motorised use is allowed, not a bike-lane commuter. Check your own state on our street-legal-by-state guide.

The title says "UL Certified Battery", and that is the whole claim. It names no standard number and no testing lab. The battery standard for e-bikes is UL 2271 and UL 2849 covers the complete electrical system; this listing names neither, and makes no claim for the bike as a whole. Likebike's own store lists the UM1 line, Plus included, as UL 2849, but the Amazon listing does not repeat it. If your building asks for a UL mark before you charge indoors, ask Likebike for the certificate first. For bikes that document their certification, see our UL-certified picks.

The listing also publishes no weight and no payload rating. A 2000 W peak fat-tyre bike with a 960 Wh or larger pack will not be light, so think about steps and car racks. The battery is removable for charging and has a smart BMS, per the listing.

Likebike also sells a pricier model its bullets call the UM1 PRO, which Amazon also titles "Likebike UM1", so check which listing you are on. The PRO claims a 1200 W motor reaching 3000 W peak and a 48 V x 30 Ah (1,440 Wh) battery. We have not reviewed it. Of the three UM1 listings we know of, it is the only one that gives a motor figure other than peak, and 1200 W is above the 750 W rated limit in the federal definition, so stepping up moves you further outside the class system.

Buy the UM1 Plus if you want hydraulic brakes and a rear shock behind a 2000 W peak motor, and you will ride it where the class rules do not reach. Compare the ASKGO S9 at $529.99, which also has NFC unlock and a 960 Wh battery but uses mechanical disc brakes and a sprung seatpost in place of a rear shock. Skip it if you need a published top speed, a rated wattage or a named UL certificate, because this listing provides none of them.