Some brands focus on innovation, some on affordability, and others on large-scale industrial applications. Exide Technologies (USA, 1888). I've handled models from basic to high-performance, and the Power Sonic PS-1270 12V 7AH Sealed Lead Acid Battery truly stood out. Its AGM technology offers superior performance, especially in demanding conditions—much more consistent than standard flooded types. Based on market share, technology, and customer. . But here's the thing: lead acid energy storage systems still power 75% of off-grid solar installations in places like rural South Africa. Why are these century-old giants still dominating markets from Texas to Tokyo? Let me share something I saw last month in Bavaria.