Battery life protection: over-charge protection, over-discharge protection, short circuit protection and temperature control protection.

When the temperature of the bicycle headlight is higher than 75°C, it will automatically switch to the low steady. It will not switch back to the original brightness gear until it detects that the temperature is lower than 65°C. When the temperature of the bicycle headlight is higher than 90°C or lower than -20°C, it will enter the "protection mode" - flashing 3 times and then turning off for 1 second in a loop. It will not exit the "protection mode" until the temperature returns to normal.

Standard Runtimes:
Low Beam:
Medium steady – 800 lumens – 4hrs
Low steady – 400 lumens – ~8hrs
High Beam:
High steady – 900 lumens – 4hrs
Ultra high steady – 1800 lumens – 2hrs
Hidden Modes:
Hidden daytime flash mode – 600 lumens – 35hrs
Hidden breathing mode – 50–100 lumens – 25hrs

Specifications
Max brightness: 1800 lumens
Charging port: Type-C
Material: Aluminium housing
Battery: 6700mAh
Input: C-C 5V/2.0A
Output: 5V/2.0A
Visual angle: >220°
Waterproof level: IPX6
Charging time: \~3hrs
Max runtime: 35 hours
Size: 101.2 x 38 x 42.6mm

Mfr Claimed Weight
207g