Translations:Energy storage sizing and selection/22/en

Lead acid batteries are commonly available in 2V, 4V, 6V, 12V designs that can be wired in series to achieve a 12V, 24V, or 48V system voltage. See Battery wiring for more information on how to properly configure a battery bank. With small systems 12V batteries are the standard, but as system size increases lower battery voltages lead to more storage with fewer parallel strings, which is a better design. Deep cycle batteries with voltages below 12V can be difficult to find in some locations.