How much capacity you can safely use.
Batteries are the most expensive part of a solar system. Choosing the right chemistry and DoD is critical for longevity.
Current Setting: 80% Depth of Discharge
Efficiency: 95% | Cycles: 4000+ | Fast charging & safe.
Efficiency: 80% | Cycles: 500-1000 | Heavy & needs care.
It's the number of days your battery bank can power your home without any solar input (e.g., heavily cloudy days). Standard design is usually 1 to 2 days.