Serfas is dedicated to your road safety with their innovative lights. The BLAST Audible Low Battery Indicator is a game - changer. When the battery in a specific mode has less than 10 minutes of runtime left, it emits an 85 - Decibel loud signal. How does it work? When the battery hits the 10 - minute mark in the current mode, the light gives a long beep followed right away by a short beep, repeating every minute. Press the power button, and it switches to the next longest - running mode, restarting the low - battery alert until 10 minutes of runtime in the new mode. You can extend the runtime up to 5 times by switching from the highest to the lowest mode at the first beep. While charging, the power button blinks blue, and a beep indicates a full charge.
Using your Serfas light is easy. Just turn it on and start using it in your preferred mode. When you hear the long - short beep sequence, it means the battery has less than 10 minutes of runtime left in that mode. Press the power button to switch to a mode that lasts longer. This can significantly extend the light's use. While charging, keep an eye on the power button. If it's blinking blue, it's still charging. Once you hear a beep, the light is fully charged. For maintenance, keep the light clean and dry. Avoid exposing it to extreme temperatures. If you notice any issues with the battery or the beeping function, contact Serfas customer support.
