Ravemen K1400 Smart Bike Headlight

The Ravemen K1400 Smart Bike Headlight delivers plenty of light for riding on dark lanes, plus a useful set of smart features at a sensible price. Its 1,400-lumen maximum output is more than enough for night riding, and the wireless remote works particularly well when the light is mounted on a GoPro-style mount.

The K1400 sits firmly in the middle of Ravemen’s range, and is aimed at riders who want one light to cover commuting, training, and regular night riding.

The standard handlebar mount is functional but not perfect. It’s slightly awkward to fasten, and it’s tricky to fully secure the mount without removing the light first. It’s not a serious flaw, but it could definitely be more user-friendly.

The whole thing is stable on smooth tarmac, but I had less confidence on rougher lanes and gravel. It never came loose or fell off, but it doesn’t feel completely rock solid either.

Ravemen also includes an inverted GoPro-style adaptor, allowing the light to be mounted underneath a compatible computer mount. Despite running a fairly heavy Garmin 1050 above it, stability here wasn’t an issue at all. In fact, it felt more secure than the standard bar mount, and is the configuration I’d choose longterm.

Performance

This is easy to use, with a large button to cycle through modes, and a wireless remote the put the same controls close to hand. It’s particularly useful as, if you’re using the GoPro mount, you can’t get to the button anyway.

Instead of focusing purely on headline numbers, the K1400 prioritises usable light on the road. On unlit lanes it provides a clear, well-shaped beam that lets you see far enough ahead to ride confidently at a good speed. I was always able to spot the potholes on the rutted lanes of my usual night loop. It feels well judged for real riding, especially on narrow country lanes where control and visibility matter more than sheer power.

I found the high setting best reserved for properly dark stretches. For most riding, the mid (600 lumen) and low (300 lumen) settings were more useful than I expected. They’re bright enough to ride comfortably on quieter roads, and they make a noticeable difference to battery life.

Switching between modes is simple: a short press cycles through the outputs, including a pulsing daytime option. Holding the button for three seconds activates Ravemen’s ‘intelligent’ daytime mode, which switches between a flashing pattern in bright conditions and a steady, mid-level output as light levels drop. It’s a useful feature for unsettled UK weather, as you don’t have to think about switching modes manually.

As with everything these days, there’s an AI mode. Holding the on/off button for five seconds (until the blue indicator flashes steadily) activates it. Over five days, the light learns which modes you tend to use in the various conditions, and adjusts its output automatically. It’s a clever feature, although in practice I found the wireless remote easy enough that I didn’t rely on the AI mode very much.

The light automatically switches off after two minutes of inactivity and turns back on when movement is detected, which is pretty useful for avoiding accidental flat batteries.

One thing worth noting is that the K1400 gets very hot at high outputs, even after a relatively short time. It’s not a major issue while riding, but it’s something to be aware of if you’re removing the light while it’s still switched on.

Runtimes & charging

On the maximum 1,400 lumen setting, the battery lasted for 1.5 hours before switching to a lower constant setting for 30 minutes.

For most riders, that will be more than adequate. It comfortably covers commuting, training rides, and typical night riding without any anxiety. It’s really only the most hardened audaxers or distance riders – those spending long hours in full darkness – who might find it limiting. For everyone else, the balance between brightness and endurance feels sensible rather than compromised, especially as the remote makes spending time in lower power outputs easy, which in turn extends runtimes.

I appreciate the way it handles low-charge situations. When using the GoPro mount, the battery indicator isn’t easy to see, so its gradual dimming provides a useful warning.

At lower outputs, runtimes improve significantly. The mid setting lasts around 3.5 hours, while the low setting stretches to roughly six hours.

See and be seen with our top front bike lights for on the road, trail or path

Charging takes around two hours from flat to fully charged using a USB-C phone charger. The LED on the on/off button flashes red while it’s filling, and goes green once it’s full. Simple.

The USB port is water-resistant, and the light is IPX7-rated. During the seemingly endless winter rain of 2026, it was tested heavily and coped excellently. That’s reassuring, as I’ve lost a few lights to water ingress over the years.

The K1400 can also be used as a power bank, and continues to shine while charging another device. It’s a handy backup feature if you’re desperate for some phone or computer battery, although for bikepacking trips I’d still rather carry a dedicated power bank.

Value

At £79.99, this is good value. It sits comfortably in the sweet spot between basic commuter lights and bigger night-riding units. If you’re planning a lot of night riding, the Ravemen K1800 (a more powerful version of the same thing) may be worth considering at £99.99.

The 1500-lumen Moon Rigel Max has very similar power and battery capacity to the Ravemen. It is also £79.99.

Josh thought the Magicshine Evo 1300 was excellent, with a slightly longer battery life than this one, plus the ability to create your own modes. It’s £79.99 as well.

Overall

This is a very good, feature-packed front light that offers strong value for money. While its max-output runtime may be a little short for serious night rides, the combination of strong mid-level performance, the effective remote, and general ease of use makes this a great choice for commuting, training, and night riding.