Bike lights
Batteries you replace, or a lamp you charge?
Both are StVZO-declared sets at essentially the same front brightness and the same price bracket. The difference is what happens on the evening you forgot — and there is a real argument on each side.
| Compared on | Battery light set, 30/15 lux | USB light set, 30 lux |
|---|---|---|
| Front output | 30 lux bright, 15 lux economy | 30 lux front |
| Beam approval | StVZO stated | StVZO stated |
| Power | Replaceable batteries, with a level indicator | USB on both lamps |
| Front runtime | Approximately 6 hours | Up to 6 hours |
| Rear runtime | Approximately 15 hours | Not published |
| Housing | Not published | ABS and PMMA, described as waterproof |
| Listed on amazon.com | No | No |
A tick marks the better answer on that line only. Counting ticks does not decide the page — the two verdicts below do, because these products answer different questions.
No amazon.com listing was found for this one. We hold references for other markets but none for the United States, so it may not be buyable here — which is the first thing to weigh against anything below.
The set for a commute where being caught out has consequences. A flat battery light is solved with a corner shop rather than a charger and three hours, and the level indicator exists because a battery light gives less warning than a rechargeable one. It publishes a rear runtime the Realky does not.
No amazon.com listing was found for this one. We hold references for other markets but none for the United States, so it may not be buyable here — which is the first thing to weigh against anything below.
The set with no running cost and a published housing. USB charging on both lamps means one cable for everything, and the screw mounting holds better than a rubber strap on rough surfaces. Realky publishes no rear runtime, which on a rear lamp is the figure that matters.
On lit streets, comfortably — it is enough to be seen and to read the surface at commuting speed. On unlit lanes it is a compromise; the SIGMA Aura 80 in this hub states 80 lux, and because an approved beam has a defined cut-off, that extra output goes onto the road rather than into oncoming faces.
The German road traffic regulations, which define a beam with a sharp upper cut-off. Both manufacturers state conformity themselves; we report the statement and do not assess it.
Realky states hand-loosened screws rather than a rubber strap, which holds better on rough surfaces and takes longer to move between bikes. DANSI states tool-free mounting, which is the opposite trade. Neither is a defect.
30/15 lux · StVZO stated · battery · 6 h front, 15 h rear
The cheapest StVZO-declared light set in this hub, running on replaceable batteries with a two-level 30/15 lux beam and a battery-level indicator.
Best for: Riders who want approved lighting on a bike they use occasionally, and who would rather carry spare cells than remember to charge.
30 lux · StVZO stated · USB rechargeable · 6 h front
A USB-rechargeable StVZO-declared set at close to the cheapest price here, with a 30 lux front lamp and an ABS and PMMA housing the maker describes as waterproof.
Best for: Commuters who charge at a desk and want approved lighting without a battery habit.
