Buying Guide: How to Choose Electric Bikes in 2026

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This guide is ordered from what matters most to what matters least. If you're only going to read two sections, read the first two: that's where most of the difference between getting it right and regretting it lives. At the end you'll find a glossary of the terms you'll see repeated in the product sheets, explained without the marketing fluff.

Step by step

1. Start with where the bike is going to be stored. Si hay escaleras, un tercero sin ascensor or un maletero, el peso y una batería extraíble son más importantes que la potencia. Una bici que cuesta mover es una bici que se queda aparcada.
2. Insist on a mid-drive motor and torque sensor if there are hills. The mid-drive motor uses the gears and the torque sensor makes the assistance proportional to your effort. They're the two components that define how the bike feels.
3. Work out the watt-hours you actually need. Multiplica voltios por amperios-hora y divide entre 10 Wh/km para una estimación conservadora. Compara siempre en Wh, nunca en Ah, or compararás cosas distintas.
4. Don't compromise on the brakes. Hydraulic disc brakes and generously sized rotors. It's the component where an e-bike's extra weight becomes a risk if it's been skimped on.
5. Check that spare batteries and motors are available. Pregunta si se vende la batería suelta para ese modelo y si hay servicio from the fabricante from the motor en España. Sin eso, la vida útil de la bici es la de su batería.

Braking is the component you need to oversize

An e-bike easily weighs twice as much as a normal bike and travels at a higher sustained speed, so the energy that has to be dissipated when braking is far greater. The brakes on hydraulic disc con discos de tamaño generoso no son un lujo: son lo que hace que la bici pare en mojado y en bajadas largas sin que el freno se caliente y pierda mordida. Unos frenos de zapata or de disco mecánico pequeño en una bici de 25 kg son un problema esperando su momento.

An e-bike's motor wears out the drivetrain much faster

The extra power runs through the same chain, the same sprockets and the same chainring as on a conventional bike, and wear speeds up noticeably. A chain that lasts thousands of kilometers on a normal bike may need replacing much sooner on an e-bike. What saves money is measuring chain stretch with a gauge and replacing it in time: a cheap chain replaced in time saves an expensive cassette and chainring.

The frame and wheels have to be sized for the whole package

Una bici eléctrica bien hecha lleva cuadro reforzado, horquilla acorde y llantas con más radios or de perfil más alto, porque soporta el peso from the motor, de la batería y las fuerzas de aceleración. Las conversiones de bici normal con kit eléctrico y las eléctricas muy baratas fallan justo ahí: spokes that break, dropouts that give way and forks that can't keep up. It's a difference that's invisible in the photo and decisive in use.

Watt-hours, not amp-hours, tell you how far you'll get

A battery advertised as "15 Ah" isn't comparable to another at "13 Ah" if they have different voltages. The useful figure is Wh = volts × amp-hours: una de 36 V y 15 Ah son 540 Wh, y una de 48 V y 13 Ah son 624 Wh, más capacidad aunque el número de Ah sea menor. Como referencia práctica, un ciclista consume from the orden de 7 to 15 Wh per kilometer depending on the assistance level, the terrain and the total weight.

• Material and build quality
• Recent verified reviews (3-4 stars included)
• Warranty and return policy
• Current price versus its historical average
• Reputación from the vendedor
• That the key features match your use case (Everyday Use)

Always charging to 100% shortens the battery's life

Las celdas de litio se degradan más cuanto más tiempo pasan cerca de la carga completa or de la descarga total. La práctica que más alarga la vida es keeping it between 20% and 80% for daily use y cargar al 100% solo cuando toca una salida larga. Para guardarla semanas or meses, lo correcto es dejarla en torno al 50-60% in a cool, dry place, never fully discharged and never outdoors in winter.

Criteria	Eleglide CitycrosserOur pick	Fafrees F20 Ultra
Ideal for	Balanced, general-purpose use	Everyday Use
Strength	Value for money	Specific features
Ratings	Very positive and numerous	Positive
Indicative price	from ~€128	from ~€80
Recommendation	Our pick	Best alternative
See on Amazon	See price →	See price →

Parking and traffic rules change from city to city

For traffic purposes an EPAC is a bicycle, so it generally rides in the bike lane and on the road according to local bylaws, but each town regulates sidewalks, parks and parking differently. There are cities where a helmet is compulsory for minors, others with specific speed limits in pedestrian areas. Before using it daily to commute, half an hour reading the local bylaws avoids avoidable fines.

Assistance is a range tool, not a laziness tool

The argument that convinces people on the fence is this: an e-bike doesn't replace exercise, it changes your range. It turns a 15 km ride with hills and arriving sweaty into a commute that's viable every day, and it brings mountain rides that were previously impossible into range. Mobility studies are fairly consistent: people with an e-bike ride more kilometers per month than people with only a conventional bike, precisely because they use it for more things.

Glossary: the terms you'll see in the product sheets

EPAC

A legal pedal-assist bike: it assists only while you pedal, cuts off at 25 km/h and has a 250 W nominal motor. That's what keeps it classed as a bicycle in legal terms.

Torque sensor

It measures the force you apply to the pedal and multiplies the assistance proportionally. It's what makes the bike feel natural instead of surging.

Watt-hours (Wh)

The battery's real capacity: volts × amp-hours. It's the only figure that's comparable between batteries of different voltage.

Mid-drive motor

A motor located at the bottom bracket. It pushes through the drivetrain, uses the gears and centers the weight.

Hub motor

A motor built into the wheel. Cheaper and quieter, but it pushes the same regardless of the gear and unbalances the weight.

Charge cycle

One full charge, cumulative. It's the unit a battery's life is measured in, not the years that have passed.

Chain stretch

Wear measured with a dedicated gauge. Replacing the chain in time saves the cassette and chainring, which are much more expensive.

Conclusion: the decision in three steps

Resumido: define tu uso real, quédate con las dos or tres especificaciones que sí lo afectan y ajusta el presupuesto a eso. Con ese filtro, el Eleglide Citycrosser es la elección por defecto y el Fafrees F20 Ultra la alternativa cuando tus prioridades son otras. Todo lo demás — funciones extra, campañas, gama alta — es secundario si esos tres pasos están bien resueltos.

Frequently asked questions

Motor central or en la rueda?

Mid-drive if there are hills: it uses the gears, climbs with real force and the bike handles in balance. In the wheel if it's all flat city riding and you're after price: it's cheaper and quieter, but it always pushes the same and bogs down on long climbs.

Cuánto durará la batería antes de perder capacidad?

It's measured in charge cycles, not years, and the degradation is gradual: you'll first notice fewer kilometers, not a sudden failure. With good care, several hundred cycles while keeping most of the capacity. Check before buying whether the battery is sold separately para ese modelo: eso decide si la bici dura una década or se convierte en chatarra.

Cómo la protejo from the robo?

A a high-end U-lock anchored through the frame a un punto fijo, más un segundo candado para la rueda, y llevarte la batería si es extraíble. Revisa tu seguro de hogar: muchos cubren la bici solo dentro from the domicilio, así que un seguro específico puede tener sentido dado el valor from the vehículo.

Puedo desbloquear el limitador de 25 km/h?

Technically yes, legally it's a serious change. Once it exceeds the limits it stops being a bicycle and becomes a vehicle that requires type approval, registration and insurance; on top of that the manufacturer voids the warranty and, in an accident, the insurer may refuse to cover it. It's not a minor modification.

Sirve para hacer ejercicio?

Yes, and in practice more than it seems: it changes your range, it doesn't remove the effort. On low assistance you pedal just the same, and with the help you take on trips and routes you didn't do before. Mobility data is consistent: people with an e-bike clock up more kilometers per month than people with only a conventional bike.

Should I go with the Eleglide Citycrosser or the Fafrees F20 Ultra?

The Eleglide Citycrosser is the most well-rounded option and the one we recommend by default. The Fafrees F20 Ultra makes sense if your priority is Everyday Use. As a budget reference, the sensible range starts around €80 and the best balance is usually around €128.

By the VoltRide Team · reviewed by

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