If your Solar LED Rock Spotlight is not turning on at night, please try the following:
 Ensure that the control switch (located on the bottom) is pushed all the way to the right or left.
 Ensure the Rock Light is receiving at least four hours of DIRECT sunlight during the day (and not in shadows most of the day).
 Switch to the OFF position, and move Rock Light to an area where it gets direct and consistent sunlight. Allow it to charge for 2-3 days. Then, switch light ON (to either 3000K or 5000K) and observe the light at night.
 You might have a defective battery. Purchase 18500 size 3.2V 800mAh Li-ion type batteries.
 If all else fails, return your Rock Light to the retailer or directly to KODA.