I bought 3 of these lights for use under my kitchen cabinets. These lights are not worth having. On a full charge, the light bars initially emit very bright light-which is great.  The problem is that level of light only lasts about 15 minutes then begins to dramatically decrease. It makes no difference whether I keep them plugged in during use or not. They begin to dim (quite noticeably) after about 15 minutes, and the light level is nearly useless after being on for about 30 minutes.  Donât waste your money!