Ac DC power supply or battery pack rated at 12V 20.8Ah provides an electrical capacity of approximately 250 Watt-hours (Wh). This configuration is highly prevalent in portable power stations, solar setups, and deep-freeze camping coolers. Because exact specifications depend on the specific manufacturer and chemistry (e.g., Lead-Acid or Lithium-Ion), standard baseline specifications are outlined below: General Specifications Nominal Voltage: 12V (or exact 11.1V to 12.8V depending on cell configuration) Capacity: 20.8 Ah (Amp-hours) Total Energy Capacity: ≈ 250Wh to 256Wh Typical Applications: Portable solar systems, e-bikes, camping refrigerators, and medical/survey equipment and CCTV      SKU: GM0002150 Categories: DC Power Supply Adjustable, Electronics