How many years should a fully charged lead-acid battery be stored
240KW/400KW industrial rooftop - commercial rooftop - home rooftop, solar power generation system.
As we can see at 113°F (45°C) the battery was fully discharged within 180 days while storage at 32°F (0°C) meant it was still near full capacity after 200 days. However 32°F (0°C) is not recommended as Nickel Cadmium batteries are water based and in a fully discharged state this may freeze leading to possible internal or external damage.