Longlife solar unit for garden lights. The perfect replacement for defective solar units in existing garden lights. Replaces solar light units with a diameter of 60 to 80 mm. This Longlife solar unit, developed in Germany, is characterized by extreme durability. This is made possible by the use of the highest quality components and an innovative design that conserves resources while providing active environmental protection. All components used and an excellent battery technology (LiFePO4) ensure years of trouble-free operation of up to 10 years. This eliminates the need for constant environmentally harmful replacements of conventional solar units in garden lights, which can fail after a very short time. The Longlife solar unit not only protects the environment but also saves money. This is how active environmental protection works.