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Buying a used e-bike: what to check

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In short

Before buying a used e-bike, check that it has a 250 W EAPC plate and has not been derestricted, that the frame number has not been reported stolen, and that the battery holds charge and comes with the original charger and keys. Test ride it on a hill, listen for motor noises, check brakes, chain and tyres, and ask for the receipt and service history. Walk away if anything does not add up.

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A second hand e-bike can be good value, but the most expensive part, the battery, wears with use and is hard to judge by looking. Used e-bikes are also a target for thieves, and some have been tuned to go faster than the law allows. A careful check takes about half an hour and protects you from the worst surprises. This guide walks through what to look at, what to ask the seller and which red flags mean you should walk away.

Check it is legal and not stolen

Look for the EAPC plate or label on the frame, usually near the bottom bracket. It should show the maker, the motor's continuous rated power of 250 W and the battery voltage. Our EAPC plate guide shows what to expect. Ask whether the bike has ever been derestricted with a dongle or software, and be wary if the seller boasts about top speed. A derestricted bike is not legal on UK roads; see the gov.uk rules.

Find the frame number, usually stamped under the bottom bracket, and check it on a bike register such as BikeRegister before paying. Meet at the seller's home address, ask how long they have owned it and ask for the original receipt. A very low price, no keys or charger, and reluctance to show ID are warning signs.

EAPCMAKERYour maker LtdManufacturerRATED POWER250 WContinuous rated powerBATTERY36 VBattery voltageMAX ASSIST15.5 mph (25 km/h)Max assisted speed
An EAPC plate must show the maker, the continuous rated power and the battery voltage or the maximum assisted speed.

Battery and charger checks

Our guides to testing an e-bike battery and how long batteries last help you judge what you see. Factor in the cost of a replacement pack if the battery is old; our replacement battery guide explains compatibility.

  • Ask the battery's age and roughly how many miles or charges it has done.
  • Check the battery is the original or a matching replacement, with a key that locks and unlocks it.
  • Look for cracks, swelling, scorch marks or a loose case. Do not buy a damaged pack.
  • Check the charger is the correct one for the battery, with matching voltage and connector.
  • Ask the seller to charge it fully before you visit, then check the display shows full and the bike rides as expected.
  • On branded systems such as Bosch or Shimano, ask whether a shop has read the battery health report.

Note:A damaged or swollen lithium-ion battery can be a fire risk. Never buy or charge one, and follow London Fire Brigade guidance on lithium batteries.

The test ride

  1. 1

    Check both brakes before riding off.

  2. 2

    Ride through every assist level and check the display works and assist starts smoothly.

  3. 3

    Ride up a hill in the highest mode and listen for grinding or clicking from the motor.

  4. 4

    Check assist fades at about 15.5 mph on the flat.

  5. 5

    Shift through all gears and listen for skipping.

  6. 6

    Brake hard from moderate speed and check the bike stops straight.

Bike condition checks

Ask for the manual and any service history. A bike that has been serviced at a shop that supports its motor brand is a better bet. If you are unsure, a shop pre-purchase check can be worth paying for on a higher value bike.

PartWhat to look for
FrameCracks, dents, bent dropouts, rust at welds
Chain and cassetteStretch on a chain checker, hooked teeth
BrakesPad thickness, spongy hydraulic levers, scored discs
TyresCuts, worn tread, perished sidewalls
WheelsWobbles, loose spokes, loose hub motor axle nuts
WiringPinched, taped or cut cables, corroded plugs
SuspensionLeaking oil, knocking, stiff action
Wear points on a used e-bike

New or used?

A used bike with a tired battery may end up costing close to a budget new model once you replace the pack. Compare carefully with a new bike that has a full warranty and a fresh battery. Our e-bikes under 1000 guide and electric hybrid guide are a good benchmark for what new money buys. Our what e-bike should I buy guide helps you narrow down the type first.

Compare new e-bikes →

Frequently asked questions

Is it worth buying a used e-bike? It can be, if the battery is healthy, the bike is legal and not stolen, and the price allows for wear parts.

How can I tell how old an e-bike battery is? Ask for the receipt, look for a date label on the pack, or have a shop read the battery data on branded systems.

What if the bike has no charger? Be cautious. A charger must match the battery exactly, and a missing one may point to a problem or theft.

Should a used e-bike come with keys? Yes. Batteries lock to the frame, and a missing key is a common sign of a stolen bike.

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