FIG. 15 illustrates a system of LED lights each powered by a single battery backup/LED driver system 1500. The battery backup/LED driver 1500 is as described in FIGS. 13 and 14, but now with an output that couples to a plurality of LED fixtures, each having one or more LEDs. Further, the battery backup/LED driver 1500 includes a switch 1520 that determines whether an output of the battery backup/LED driver 1500 is sent to the plurality of LED fixtures, to an inverter 1530, or is split between both destinations. The presence or absence of voltage to current converter 1516 distinguishes the dual stage (e.g., FIG. 13) from the single stage (e.g., FIG. 14) variation.