Swytch’s new Max+ ebike conversion kit, with a 40-mile range from its removable battery, arrives for testing – here are Warren's first impressions

Swytch’s new Max+ ebike conversion kit, with a 40-mile range from its removable battery, arrives for testing – here are Warren's first impressions

The Swytch Max+ is the latest ebike kit to arrive at BikeRadar

Warren Rossiter / OurMedia

Published: May 2, 2025 at 11:00 am

Swytch, the maker of some of the world’s best-selling ebike conversion kits, has launched its most innovative kit to date.

After announcing the Max+ last year, alongside a complete Swytch bike, it's now finally available to buy – and one has just arrived at BikeRadar for review.

The new Max+ has a large battery capacity, an integrated front light and a USB-C charge point, while Swytch is also emphasising the kit's battery safety technology.

The ebike conversion kit market is moving at pace, with the Max+ arriving hot on the heels of Boost’s Brompton-specific system, Cytronex’s new thru-axle rear-motor option and Skarper’s click-on, click-off kit.

However, concerns remain about unregulated and low-quality systems.

Bringing it to the Max

Swytch Max  battery
The compact battery is very well designed. Warren Rossiter / OurMedia

Like previous generations, the Swytch Max+ can convert almost any bike into a pedal-assisted electric bike, with a 250-watt motor and a top assisted speed of 15mph.

The Max+ promises an increased range of up to 40 miles from its 274.5Wh-capacity battery.

There's also a Max++ option, promising a boosted range of 60 miles.

Swytch Max  hub
Here's the Max motor hub built into a 20-inch wheel. Warren Rossiter / OurMedia

The Max+ works by replacing a regular front wheel with a Swytch motor wheel (built at Swytch’s Norwich factory). The quick-release bar-mounted battery can be removed at the flick of a lever. If you remove the battery, your bike becomes a standard bike again.

Swytch's CEO, Oliver Montague, says this circumvents Transport for London's recent ban on non-folding ebikes, if a Swytch bike's battery is removed.

The Max+ is now in stock and on sale at £999.

Swytch Max+ first impressions

The battery pack's USB-C port makes it a power source. It powered my laptop to write this article. Warren Rossiter / OurMedia

I’ve received two versions of the new Max+ kits for testing.

The first is built with a 700c disc wheel, which has found its way onto the Genesis Day One used to test the Boost kit.

The second is built around a 20in wheel for a Kansi folding bike. I’ll be following up with full tests of both options soon.

Swytch Max  unboxed
The Max kit arrives in fully recyclable packaging, with a comprehensive instruction manual. Warren Rossiter / OurMedia

It’s a slick-looking system, with a substantial mount for the battery. There are cables to run to the front-hub motor and down to the pedal sensor, which makes your donor bike look somewhat different.

I’d like to see Swytch adopt a wireless pedal sensor, much like Skarper’s strap-on rechargeable unit.

However, I’m impressed by the Swytch kit's simplicity, along with the presentation, packaging, instructions and overall design.

Swytch Max  battery pack illuminated
The battery pack illuminates, giving 180-degree visibility. Warren Rossiter / OurMedia

The fitting of both kits is simple and requires minimal tools: hex keys, snips or scissors for the cable ties, a 17mm spanner for the wheel nuts, and that’s it.

The comprehensive and well-illustrated fitting manual helps things along, and it's good to see the kit ships in fully recyclable packaging, too.

The battery itself, with its built-in front light and side illumination, is very well thought-out. It's IPX6 waterproof-rated, which means it's tested by being sprayed with water at a rate of 100 litres per minute, at a pressure of at least 15psi, for at least three minutes from all directions. This should make it weatherproof for all riding conditions.

Swytch Max  remote
The bar-mounted remote shows the battery level and is home to the mode controls. Warren Rossiter / OurMedia

The inclusion of a USB-C charge port is most welcome, because it means the battery can double-up as a power pack, and its 272Wh capacity is enough to recharge an iPhone approximately 200 times.

Swytch Max  kit fitted to a folding bike
The Swytch Max kit took less than 30 minutes to fit to my folding bike. Warren Rossiter / OurMedia

Fitting-wise, it took 25 minutes to convert the Kansi folder and 35 minutes for the Genesis.

Stay tuned for full reviews of the two kits once testing is complete.