Chemistry: Valve Regulated Lead-Acid (VRLA) with an advanced Gel electrolyte design, making it spill-proof and resistant to temperature fluctuations.Raw Capacity: Operates at 12 Volts with a 55 Ampere-hour (Ah) rating, storing roughly 660 Watt-hours (Wh) of maximum electrical energy.Daily Usable Capacity: Following the standard deep-cycle 50% depth-of-discharge rule to prolong its operational lifespan, it provides around 330Wh of usable daily power.