The Steinel Xsolar lamp (150 lm, IP44) is designed to be used as outdoor lighting and is not necessarily meant to be kept on constantly. However, it is equipped with a rechargeable battery via solar panels, which means that it can be used continuously during the day and night, provided that the battery has been charged sufficiently during the day.

It is important to note that the lamp is equipped with a motion sensor, so it usually only switches on when it detects movement, which helps conserve battery power. If you want to keep it on constantly, you may need to recharge it more frequently or ensure that it receives sufficient sunlight during the day.