Quick Summary
The DARKBEAM T25 is a USB-C rechargeable bicycle rear light with an LED display showing battery level. It has six lighting modes, a tool-free mounting method and a built-in rechargeable battery. The listing also describes braking detection and a sleep mode that wakes with vibration.
Key Details
| Detail | Product information and buyer relevance |
|---|---|
| Model and type | DARKBEAM T25 bicycle rear light. |
| Lighting modes | Stay on, flash, breathing, single flash, burst flash and heartbeat. The light is stated to remember the last-used mode. |
| Display and braking detection | The LED display shows battery level. Braking detection is described as active in normal mode, with brightness increasing when rapid braking is detected. |
| Sleep mode | After the light has been on and stationary for 30 seconds, it is stated to enter sleep mode and wake with vibration. |
| Charging | Built-in rechargeable battery with USB-C charging. The stated power supply limit is 5 V, 2 A. |
| Protection rating | IP55 is the stated rating. Check that it suits the conditions in which you plan to use the light. |
| Size and colour | 1.26 x 1.18 x 1.26 in; red and black. |
| Included item | A USB-C charging cable is stated to be included. |
What to Compare Before Buying
- Mounting position: Check that the base can be fitted where you want the rear light on your bicycle. The listed mounting method is tool-free and uses a quick release.
- Charging source: Check that your USB power source is within the stated 5 V, 2 A limit.
- Lighting and visibility: Consider whether the six modes suit your preferences, and assess visibility from your intended mounting position. No measured brightness output is provided.
- Weather protection: IP55 is the stated rating; it should not be treated as unrestricted waterproofing.
Setup and Correct Use
For the listed mounting method, insert the base at a 45-degree angle, then rotate it a further 45 degrees to the left or right. Long-press the control to switch the light on or off; click to change modes.
Important Limitations
The battery-life wording is given as “up to 14-38 hours”, which does not establish a clear runtime. Do not rely on a particular duration without confirming it for the exact light.
Before You Decide
Check the mounting position, the stated charging limit and whether the available modes and visibility suit your intended use. Consider the IP55 rating against the conditions you expect to encounter.
