E-Bike Accessories That Actually Earn a Spot on the Bike

A bicycle lock is rated for a bike a thief can carry off in one hand. An e-bike is 22 to 30 kg of frame, motor, and battery that costs more than most people's second-favourite bike, which makes it a specific kind of target: heavier to steal quickly, worth more once it's gone. The lock has to match that maths, not the bike's weight.

Buy for the theft risk you actually have, not the one you imagine. A cable lock stops opportunists and does nothing against anyone carrying bolt cutters. A hardened steel U-lock or a folding lock like the ABUS Bordo Granit X-Plus 6500 stops both, at the cost of a bit more weight in the pannier. If the bike's locked outside for more than a coffee break, that weight is the trade worth making.

(Yes, I once locked a bike to a bin in a hurry. No, I won't be doing that again. The bin lost. The bike stayed.)

A cheap lock repeats the marketplace-bike mistake in miniature: save ten dollars on the lock, risk the two-thousand-dollar bike behind it. If a seller can't tell you what actually backs the bike, the accessories aisle isn't the place they'll suddenly get honest.

Bolt-on lights are the accessory everyone buys and half of everyone forgets to charge. Integrated lights, wired into the bike's own battery, remove the choice entirely: turn the bike on, the lights are on, nobody's fumbling with a USB cable in a car park at six.

If the bike didn't come with integrated lights, a bolt-on set is still better than nothing, and 'better than nothing' is a low bar. Something like a Lezyne headlight up front and a solid rear light are the minimum, not the finish line. Reflectors and lights aren't just a nice-to-have, either. In the US, baseline reflector and lighting requirements are set by the CPSC's bicycle safety requirements before a bike is even legal to sell; other markets set their own minimums. Whatever the local floor is, riding after dark deserves better than it.

Rechargeable lights save money over a season. Replaceable-battery lights save you the one time you forget to charge anything and there's a corner shop nearby. Neither is wrong. Pick based on which failure mode you're more likely to hit: an empty USB port at eleven at night, or a coin-cell habit that quietly costs more than the light did.

Reckon a light is a light? A cheap one dims fast and dies faster, usually on the one ride you actually needed it.

Most e-bikes weigh 22 to 30 kg; cargo e-bikes run 30 to 40 kg. A rack, kickstand, or car rack built for a 12 kg road bike is being asked to do a job it was never rated for, and it fails exactly when it's carrying the most weight, which is the worst possible moment for it.

Check the load rating before the brand name. A rack like the Tern Hauler Rack states its weight limit up front because it's built around carrying real cargo, not decoration. A kickstand needs the same scrutiny: a flimsy one folds under a loaded pannier on a slight camber, and the bike goes down with the groceries.

Hub-motor bikes add another wrinkle worth knowing about. The motor's own torque wants to twist the axle loose in the dropout under a hard start, not just sit there politely. A torque arm bridges the axle to the frame and stops that happening. It's a small bracket that prevents an expensive repair, and it's worth checking whether the bike already has one before assuming a rack or fender bolts straight onto the same hardware without any adjustment.

Cargo-specific extras follow the same rule. A kid seat has its own weight rating and its own mounting standard, and it's no more interchangeable between brands than a battery is. Fit it to the rack it was designed for, not the rack that happened to be in stock.

This is the gap most accessory lists skip, because it's true of every shop's shelf, not just ours: 'fits most bikes' on a rack box usually means 'fits most bikes that weigh half what yours does'. Read the weight rating in the small print. It's the only number on the box that actually matters. If you're regularly hauling more than a rack was ever going to carry gracefully, a cargo e-bike is built around the load instead of retrofitted for it.

Fenders keep road spray off your back and, more usefully, off the motor and the electrical connectors under the bottom bracket. A bike cover does the same job in storage: not waterproofing the bike from a flood, just keeping it from sitting under a season of drizzle it doesn't need to sit under.

Neither accessory replaces the actual habit that keeps a bike alive: tyre pressure, chain lube, and a brake check, five minutes a week. It's the oil change of e-bikes, and skipping it doesn't cost you anything immediately, right up until it costs you a drivetrain.

A fender is a good idea. A fender on a bike nobody ever wipes down is a fender doing someone else's job.

A flat on a normal bike is an inconvenience. A flat on an e-bike two kilometres from home, in the rain, with 28 kg to push, is a worse afternoon. A compact kit (tyre levers, a spare tube or patch kit, and a pump that actually reaches e-bike tyre pressures) fits under a saddle and turns that afternoon back into a normal one.

Skip the giant multi-tool with forty-odd bits unless you're doing your own drivetrain work regularly. Most riders use three tools from it, ever: Allen keys for the seat and rack bolts, tyre levers, and whatever fits the specific bolt pattern on the battery cover. Buy those three properly rather than a kit padded out with tools you'll never touch.

The best repair kit is the one that's actually on the bike when you need it, not the fully-stocked one sitting in a drawer at home. Cheap and present beats expensive and left behind, every time.

I've ridden through winters that end most bikes by February, and the accessory shelf taught me the same lesson twice before I believed it: it isn't the cold that kills an e-bike, it's the salt and the wrong tyres. Warm battery storage, studded tyres, and a rinse after salty roads turn a season that would ruin a cheap bike into a normal Tuesday.

Studded tyres are the one accessory on this list I'd call close to mandatory once the roads near you ice over. The City of Toronto's winter cycling guidance covers the same basics I'd tell you anyway: cleared routes, lower tyre pressure, and lights that work when the days get short. Everything else on a winter checklist (a lock that doesn't freeze shut, a cover, a warmer glove) is a comfort upgrade. Studded tyres are the difference between riding and not.

Battery care matters more here than any single accessory. A pack stored at roughly 20 to 80 percent charge, out of the cold, holds its 800 to 1,000 full-cycle lifespan, three to five years of normal use. A system built to the UL 2849 standard is tested for exactly this kind of abuse, not just a lab-perfect room temperature. One left at zero percent in a freezing garage doesn't get that same deal.

A phone mount earns its keep. Turn-by-turn directions beat squinting at a phone in a jersey pocket at a red light, and a decent holder is one of the cheapest accessories on this whole list.

A dedicated bike computer, on the other hand, is usually solving a problem your phone already solved for free. Unless you're training for something specific and need the extra battery life or a screen readable in direct sun, it's a second device doing a job the first one already does.

(I own one. I bought it in a moment of weakness at a bike expo. It mostly tells me things my phone told me for free, five years earlier and for less money. Consider that a warning, not a recommendation.)

A GPS tracker is worth a look for exactly one reason: a stolen e-bike is expensive enough that a fifty-dollar tracker can pay for itself in a single recovery. It's not a substitute for the lock, though. Think of it as the accessory that helps after the lock's already failed, not instead of one.

A universal accessory fits everything the way a one-size poncho fits everyone: technically true, rarely great. A battery pack, a display console, or a rack mount built for one brand's motor and frame geometry usually outperforms the generic version built to fit anything, because it was designed around real dimensions instead of an average of them.

This matters most for anything that touches the electrics. A spare battery has to match the brand's voltage, connector, and mounting rail, not just the physical size of the compartment. A Rad Power battery doesn't fit a Trek, and a universal 'compatible with most e-bikes' pack is usually compatible with fewer bikes than the label suggests.

For anything purely mechanical, mirrors, a phone holder, a bell, universal is fine and often cheaper. The line to watch is whether the accessory plugs into the bike's electrical system or just clamps onto a handlebar. Plugs in: match the brand. Clamps on: shop around.

Honest numbers: a spare battery runs roughly €450 to €750, brand-matched with genuine cells, and it's the priciest accessory most riders will ever buy. A home tune-up kit with a video guide is €0, because we'd rather teach you the five-minute basics than sell you a service call for them.

A partner-workshop service voucher starts from €70 for the jobs worth leaving to someone with a torque wrench and a stand. An extended warranty, an extra two years on top of the standard two, runs €150 to €300, and it's worth pricing against a spare battery before deciding which one to buy first.

None of that is 'starting at' pricing dressed up to look cheaper than it is. It's the actual number, in the reader's own currency, on the accessories we stock, before anyone's added it to a cart.

Here's the bit most accessory lists skip, because telling you to buy less doesn't move much inventory. If the bike lives in a locked garage and never sees rain, skip the cover. If every ride is under ten minutes in daylight on a route you know by heart, a basic light is plenty and a second bike computer is clutter.

Match the accessories to the riding this bike actually does, not the once-a-year trip that needs the full cargo rig. Nine times out of ten, the accessory that earns its keep is the boring one: a lock, a light, a rack rated for the weight. The rest can wait until the bike proves it needs it.

Trying an e-bike before you commit to one is a different case entirely. Don't sink money into brand-matched accessories for a bike you might hand back in two weeks. Borrow a lock, borrow a light, and spend properly once you know the bike is staying.

Buy the boring stuff first. The bike will let you know, loudly, if it wants anything else.