The life-cycle of common lead-acid storage battery is generally between 500 and 2000 charge/discharge cycles. These batteries are often the default solution for low budget systems. The primary application for which these batteries are well suited is bulk storage, where routine maintenance is available, and low cost is a primary concern. SunnyCal maintains a few select (Pb) storage batteries.
Do not undersize your battery storage bank!
A steel cased lead acid storage battery is a commonly used 50kWhr, 48V battery. This battery is a rugged, high surge current battery, ideally suited for systems requiring large peak power loads.
Older style off-grid hybrid systems often use multiple cell batteries to create 24V or 48V battery arrays.They can be constructed using strings of 2V, 6V or 12V batteries.