Starlight SL series (2V50Ah~3,000Ah) VRLA batteries are recognized as the most reliable and high-quality battery system in the industry. Our SL Series batteries are designed with advanced AGM (Absorbent Glass Mat) technology; SL series have about 20 years long service life; the batteries comply with the most popular international standards, such as IEC60896-21, BS6290-4, and Europe Guide.