Used e-bike inspection checklist

1. Before you go

• Ask for the serial number and a clear photo of it, plus the brand, model and model year.
• Ask why they are selling, how long they owned it, and whether they bought it new. Note whether the answers stay consistent.
• Ask for the original receipt or order confirmation, or other proof they own it.
• Ask if the original charger and the battery key (if the battery locks) are included.
• Ask what is wrong with it, how far it goes on a charge, and whether it has been crashed, repaired or modified.
• Search the serial in public stolen-bike databases first. See the stolen check.
• Pick a public, well-lit place and go in daylight. Tell someone where you are going. Do not prepay or send a deposit.

2. Frame and fork

• Look along every weld and the head tube for cracks, bends or fresh paint over repairs.
• Check the fork and rear dropouts for bending or misalignment. Stand behind the bike and look whether the wheels line up.
• Look for deep scratches or gouges on the battery mount and motor housing, which can point to a hard crash.
• Find the serial number and check that it is not scratched, ground off, painted over or covered with a sticker.

3. Wheels, tires and brakes

• Spin each wheel. It should run true with no wobble, and no loose or broken spokes.
• Hold the front brake and rock the bike. A clunk can mean a loose headset. Lift each wheel and wiggle it side to side to feel for loose bearings.
• Check brake pad thickness and rotor condition. Squeeze both levers: they should firm up before the bar and not feel spongy.
• Look at the tire sidewalls for cracks and the tread for flat spots or uneven wear.
• If the bike has hydraulic brakes, look for oil on the pads, rotors and lever.

4. Drivetrain and moving parts

• Check the chain, cassette and chainrings for heavy wear. A new chain on worn cogs often skips.
• Shift through every gear while pedaling. Listen for skipping and grinding. A bent derailleur or hanger shows up here.
• Spin the cranks backward and forward. Play or a rough feel at the bottom bracket means bearing work.
• If there is a suspension fork or seatpost, compress it. It should move smoothly and return without leaking oil.
• Check that the lights, kickstand, fenders and rack mounts, if fitted, are secure and working.

5. Battery and electrical

• Inspect the battery case for cracks, swelling, dents, melted plastic, corrosion or a burnt smell. Walk away if you see any of it.
• Check the label for the brand, voltage, capacity and any safety certification mark. Be wary of a battery with no label or a mismatched one.
• Confirm the battery locks and unlocks with the key and sits firmly on its mount with no wobble.
• Check the charger is the original or the exact model for this battery, and that the cable and plug are undamaged.
• Look at connectors and wiring for exposed copper, taped splices, or burn marks. Visible home modifications are a bad sign.
• Ask the seller to charge the battery before you arrive or bring it to full if possible, so you can judge range and behavior.

6. Power-on and ride test

• Power the bike on. The display should light up and show assist levels without error codes. Note any code and ask what it means.
• Try every assist level. Power should come in smoothly with no cutting out, surging or grinding from the motor.
• If the bike has a throttle, test it with the bike off the ground first, then on the ground.
• Squeeze each brake while the motor is engaged. The motor should cut out when you brake, if the bike is built with brake cut-offs.
• Ride up a slope and over a few bumps. Listen for rattles, clicks and creaks. Check that the bike tracks straight with no hands-light feel.
• Watch the battery gauge during and after the ride. A fast drop or a sudden shutoff under load suggests a tired battery.
• Check that the bike's top assisted speed and motor power are what the seller said. See Maryland classes.

7. Before you pay

• Re-check the serial against the number the seller gave you earlier and against any receipt.
• Compare the asking price with similar used listings for the same model and year. A price far below the market is a reason to ask more questions, not a bargain.
• Get a short written bill of sale with both names, the serial number, the date, the price and the words "as is."
• Take photos of the bike and the serial number at the handover.
• Pay only when you are happy. Do not pay in advance for shipping or "holding" the bike.

General guidance only. Checking a bike this way lowers your risk. It does not prove the bike is safe, undamaged or legitimate. If something feels off, walk away.

Sources

• CPSC, Micromobility Information Center: https://www.cpsc.gov/Safety-Education/Safety-Education-Centers/Micromobility-Information-Center
• NFPA, Electric bike safety tips (PDF): https://www.nfpa.org/-/media/Project/Storefront/Catalog/Files/Safety-tip-sheets/ElectricBikeSafetyTips.pdf
• FDNY, Lithium-ion battery safety tips (PDF): https://www.nyc.gov/assets/fdny/downloads/pdf/codes/lithium-ion-batteries-safety-tips-retailers-consumers.pdf
• Bike Index, where to find a serial number: https://bikeindex.org/serials

Checked October 15, 2026. Rules and fees change, so confirm on the source before you pay.