The strand lasts pretty long depending on how cloudy the day was. I use three of them along my back fence outside my pool lanai to light up the dog run it gets the job done well. The bulb I have hanging right outside the lanai door and turn it on when I need it and off when done. It lasts a decent while but it does dim as power gets lower. Takes longer to charge and hold as well but I like that I can unhook it and use it like a flash light.
Unless you have a DIY itch to scratch, you can buy pre-made solar+battery LED lights on Amazon for peanuts. Here’s one of many many many examples: https://www.amazon.com/dp/B075NS8YXG/ref=cm_sw_r_cp_api_i_m7BTEb3S11M50