The Gold Star GSMF 26 is a reliable 12V 26Ah maintenance-free solar battery, built using German Technology with Calcium Inside for enhanced performance and long service life. Designed for solar and backup power applications, this battery delivers stable and consistent energy even under demanding conditions. Thanks to its 100% Maintenance-Free (MF) and spill-proof design, it offers true “set and forget” convenience no water topping, no acid leaks, and safer handling during installation. The advanced calcium-lead alloy technology reduces self-discharge and improves resistance to high temperatures, making it especially suitable for solar systems and inverter setups.