03 / Troubleshooting

Troubleshooting

Find the symptom that matches what your light is doing, then work down the steps in order. Most issues clear up within the first few steps, and anything left over gives our team a clear place to start.

Charge it first

Most reports we receive resolve after one full, uninterrupted charge with the supplied cable.

Change one thing at a time

Swap the cable, then the power source, then the bracket. Testing one variable at a time tells you what actually failed.

Note what you see

Indicator color, how long the light ran, and which mode you used. Those three details are what our team asks for first.

Work through the symptom

Common fixes

The light will not turn on

Possibly a depleted battery, or the power button needs a press-and-hold rather than a quick tap.

Step 1
Give the light a full, uninterrupted charge with the supplied cable before testing again.
Step 2
Watch the charge indicator. If nothing lights up, try a different USB charging cable or wall adapter.
Step 3
Press and hold the mode button for a moment rather than tapping it.

If the light flashes rapidly when pressing the power button, the light may also be in Lock mode; check the printed manual for the lock/unlock sequence for your model.
Step 4
If the light sat unused for a long stretch, repeat one more full charge cycle before judging the battery.

It will not charge or the indicator stays off

Cable contact, debris in the charge port, or a worn cable.

Step 1
Inspect the charge port for dirt, dried salt, or moisture and let it dry fully before charging.
Step 2
Reseat the cable so it clicks in squarely, then check the indicator again.
Step 3
Test the same light with a second cable and a second power source to isolate which part is failing.
Step 4
Avoid charging directly after a ride while the housing is still warm or damp.

Run time feels shorter than published

The highest steady mode, cold weather, or a battery near the end of its life.

Step 1
Confirm which mode you are riding in. Run times vary by mode, and boost modes are meant for short bursts.
Step 2
Compare cold-weather rides to mild-weather rides. Lithium-ion capacity drops in low temperatures and returns as it warms.
Step 3
Run one full charge and one full discharge to recalibrate your sense of the battery level.
Step 4
After many charge cycles, a shorter run time is normal battery wear rather than a fault.

The beam flickers or drops out over bumps

Movement between the light and its bracket, or a loose accessory connection.

Step 1
Remove the light from the bracket and refit it until it seats with a firm stop.
Step 2
Check that the bracket strap or clamp is tight enough that the body does not rock by hand.
Step 3
On battery pack models, unplug and reconnect the cable at both ends and route it so it cannot tug while riding.
Step 4
Inspect the contacts for corrosion if the light has ridden through repeated wet weather.

The light rotates or slips while riding

A mount sized for a different bar diameter, or a shim left out.

Step 1
Match the shim or rubber insert to your bar or seatpost diameter. Aero and oversized shapes usually need the spacer to be thinner or removed.
Step 2
Clean the mounting surface for better grip.
Step 3
Tighten in small increments and stop as soon as the light holds. Overtightening may cause damage.
Step 4
If the bracket itself is cracked or stretched, replace it rather than adding tape.

The mode button feels unresponsive

Gloved input, a lockout state, or a low battery protection mode.

Step 1
Try the button with bare hands to rule out thick winter gloves.
Step 2
Hold the button rather than tapping. Power on and mode changes use different press lengths.
Step 3
If the light steps itself down and refuses higher modes, it is protecting a low battery. Charge it fully first.
Step 4
Gently clear any dried dirt from around the button, then make sure the area is dry before testing again.

Still stuck?