the 220Ahs power Battery storage systems for residential use are equipped either with lead-acid, lead-gel, or lithium-ion batteries. Lead-acid batteries were used mostly in the past, amongst other things, as car batteries. Given their considerable advantages, lithium-ion batteries are becoming increasingly accepted over lead-acid batteries. They have come to be regarded as the standard in photovoltaics in recent years.
Lifetime: The expected lifetime of lithium-ion batteries is around 15 years, whereas the maximum for lead batteries lies between 5 and 10 years.
Safety: Lead batteries must be housed in a ventilated room since they emit gases. This is not necessary with lithium-ion batteries.
Depth of discharge: Lithium-ion batteries discharge up to 100% of stored power. Lead-acid batteries, however, can normally only be discharged up to 50%, since deeper discharge reduces their overall lifespan