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KirbEbike workshop

E-bike conversion guides

Fitting, batteries, motors, controllers and UK rules — practical guides from the team that builds and supports KirbEbike conversion kits.

246 guides

E-Bike Kits: The 2026 DIY Guide to Electric Conversion Buying Guide

E-Bike Kits: The 2026 DIY Guide to Electric Conversion

An e-bike conversion kit adds a motor, battery and controls to a bike you already own — often for less than a complete e-bike, on a frame you... Which E-Bike Battery Do I Need? 36V vs 48V vs 52V vs 72V Explained Buyer's Guide

Which E-Bike Battery Do I Need? 36V vs 48V vs 52V vs 72V Explained

The highest voltage or the biggest amp-hour number is rarely the right answer. An e-bike battery has to match your controller, motor, charger, current demand, connectors and mounting... 10 Electric Bike Conversion Kits Compared for 2026 Comparison

10 Electric Bike Conversion Kits Compared for 2026

An electric bike conversion kit adds a motor and battery to a bike you already own, for a fraction of the price of a complete e-bike. The catch... Ebike Battery Charging Time: 2A vs 5A Charger Batteries & Charging

Ebike Battery Charging Time: 2A vs 5A Charger

Three to eight hours for most ebike batteries. A 5A charger pushes current about two-and-a-half times faster than a 2A one through the main stage, so it can... KirbEbike vs Swytch vs Bafang: UK Conversion Kit Comparison Buying Guide

KirbEbike vs Swytch vs Bafang: UK Conversion Kit Comparison

These three brands solve three different problems. Swytch is the lightest, easiest wheel-swap for flat city riding. Bafang is the strongest climber, because its mid-drive works through your... 250W vs 1000W E-Bike Kit: What's Legal in the UK? (2026) Legal & Safety

250W vs 1000W E-Bike Kit: What's Legal in the UK? (2026)

Two conversion kits can look identical in a product photo — same hub motor shape, same wiring, same wheel. But in the UK, one can be ridden to... Ebike Conversion Kit Installation Cost UK: DIY vs Shop & Fit Conversion Kits

Ebike Conversion Kit Installation Cost UK: DIY vs Shop & Fit

Fitting an e-bike conversion kit in the UK costs roughly £50–£200+ in shop labour — or close to nothing if you fit it yourself. Add the kit and... EBike Battery BMS Amps: How to Match to Your Motor and Controller Buyer's Guide

EBike Battery BMS Amps: How to Match to Your Motor and Controller

Two batteries can share the same voltage and the same amp-hours — and still behave completely differently on the road. The difference is the BMS amp rating: how... Ebike Torque Arm Guide for 1000W–4000W Hub Motors Conversion Kits

Ebike Torque Arm Guide for 1000W–4000W Hub Motors

A hub motor drives the wheel forward and pushes back on its own axle with equal force. That reaction torque is what spreads dropouts, spins axles and severs... 135mm vs 142mm Hub Motor: Will It Fit? Comparison

135mm vs 142mm Hub Motor: Will It Fit?

A 135mm rear frame and a 12×142 frame can place the cassette and brake rotor in almost the same position — yet they use completely different wheel-retention systems.... Freewheel vs Cassette Ebike Conversion Kit Guide Comparison

Freewheel vs Cassette Ebike Conversion Kit Guide

A rear-wheel conversion kit can have the right wheel size, motor power and battery voltage and still be unusable if its gear-mounting system doesn’t match your bike. Freewheel... 3000W Ebike Kit with Battery: 60V vs 72V Buyer's Guide

3000W Ebike Kit with Battery: 60V vs 72V

Same 3000 watts, two very different builds. The voltage you choose — 60V or 72V — changes the current your battery and controller must handle, the heat, the...

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