BlueDot Trading Flagpole Solar Light for Vertical In-Ground Flagpoles 15 to 25 Foot Tall Flagpole Solar Light charges three 2000mAh Ni-MH rechargeable batteries (included and installed) with its six Photovoltaic Solar Panels. The rechargeable batteries will last for years, eliminating the need to replace non-rechargeable single use batteries Has 20 bright LEDs gloriously light up your flag(s) at night. Specifically made to fit in-ground flagpoles, 15 to 25 feet tall, with  threaded finial caps (such as gold balls ("trucks"), and eagles). The perfect solution to properly illuminate flag(s) at night, and maintain proper respect for our most prominent national symbol.