How long the battery will last this way depends on its size, of course, which is explained here. Not only can you plug in a power bank with the supplied DC-USB cable, but any available dynamo power replaces battery power until reaching a speed where it’s all provided by the dynamo and the battery is no longer used. In terms of how many lumens you can expect on Full Brightness, the Beacon outputs 100 Lumens at 5mph (8kph), 375 lumens at 8mph (13kph), 600 lumens at 10mph (16kph), and 750 lumens at 13mph (21kph), though there’s some variance depending on tyre size – larger diameters, like my gargantuan 29 x 3.25s, requiring a bit more speed.Īside from the USB-A used for charging devices, the DC input is ideal for those times when you need lots of illumination but you’re not pedalling fast enough to generate the full 750 lumens – riding techy singletrack on a winter’s night, for instance. Although this light isn’t especially powerful, it does last for five minutes, and unlike the original Beacon, it’s simply a case of flipping the switch over to No Beam if you want to turn it off completely, which is handy for stealth camping. If you stop at a traffic light and you’re in Low or Full Brightness mode, an inbuilt supercapacitor ensures a safety light stays on. Like the original Beacon, there’s a stand light. The charging circuit is a little different from the Beacon 1 whilst peak power is largely the same, Sinewave say there’s improved charging at low speeds. There are three modes to choose from, all engaged by a small metal switch: Full Brightness (750 lumens), Low Brightness (150 lumens), and No Light At All, in which output is dedicated to charging only. I took a big spill on a trail ride and whilst the Beacon 2 was knocked hard, and it’s barely scuffed.ĭespite expectations, the USB and DC ports are very resistant to water ingress. Mine is discreet black but there’s a multitude of eye-catching colors available too – you can even mix and match the back, middle, and front for some extra zing. The Beacon’s 10mm mounting tab is compatible with hardware from B&M, Supernova, and Schmidt, or you can run a GoPro adaptor and make use of a number of third-party options. I’ve used mine in a number of heavy downpours without any issues, and it continues to ward off the worst of the all-invading dry season dust. The Beacon features multiple seals, electronics are potted in epoxy, and connectors are gold-plated. Its inner workings are encased in a polished aluminum shell that’s very much designed for a hard life. There’s a USB-A output for charging devices and a DC input – more on that later. Like the original Beacon, the Beacon 2 is made in the USA and is similarly beautiful to hold and behold.
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