Speed! Charging via USB is ~4x faster than via solar due to the input power. Whether charging via solar or USB, the outcome remains the same—a full battery charge. Our advice is to charge via solar for a natural source of power, but if you’re in a pinch, charge via USB.

The bulbs and stakes can be left outside and have an IPX4 waterproof rating. The Charging Case should not be exposed to water unless the Waterproofing Band is securely attached. Even with the Waterproofing Band on, we recommend not leaving the Charging Case outside in the rain. The inside cannot get wet, as this will damage the circuit.

Yes, you will need to remove the green stickers before use. These stickers help protect the charging function during storage and transportation from the factory. Leaving them on will impede the charging function, so they must be removed.

Direct sunlight means that the sun’s light is directly hitting the solar panel. For example, if you were standing outside under the sun with nothing obstructing you and the sun, then you would be in direct sunlight. If you were standing inside, you would be getting indirect sunlight but no direct rays from the sun. Solar panels always need direct sunlight to charge. If in doubt, think of it this way: if you were Luci and you were able to directly see the sun, then you would be in direct sunlight!

Yes, but it will charge at a slower rate than on a bright, clear day. As your Luci charges via the red and violet frequencies of visible light, the charge times will vary based on the UV index or overcast skies. Generally speaking, the higher the UV index, the faster the charge.

The sun generates significant red and violet frequencies (which charge your Luci), whereas your ordinary indoor lights emit a tiny fraction of that UV. We recommend you go straight to the source and put your Luci directly in the sunlight from a windowsill or, for the best results, outside!