Battery Technologies for Solar Systems at a Glance
This article compares the most important battery technologies for solar applications:
Lithium-Ion Batteries (LIB)
- LFP (Lithium Iron Phosphate): Safe, durable, eco-friendly – best choice for solar systems
- NMC (Nickel Manganese Cobalt): High energy density, ideal for space-limited applications
- 3,000–6,000 charge cycles, 90–95% efficiency
Lead-Acid Batteries
- Lowest investment costs, proven technology
- Only 500–1,500 cycles, 50% usable capacity
- Only suitable for very small budgets
Solid-State Batteries (Future Technology)
- Up to 400+ Wh/kg energy density
- Maximum safety, no liquid electrolyte
- Market launch expected 2026–2027
Recommendation 2025: LFP lithium-ion batteries offer the best balance of safety, longevity, efficiency, and cost.