FIG. 2 illustrates a circuit arrangement that represents the current state-of-the-art. A battery backup system 200 is arranged between an AC mains 202 and a set of one or more LEDs 204. Via a latching single or multi-pole relay 203 (or other means), the battery backup system 200 can be connected to or disconnected from the AC mains 202 and the one or more LEDs 204. The relay 203 also disconnects the battery backup system 200 from the one or more LEDs 204 during normal operation of the AC mains 205 so that the LEDs 204 are powered without interference. When a power outage occurs, or some other issue occurs with the AC mains 202, the backup system 200 is engaged. This means that it is disconnected from the AC mains 202, and at the same time the relay 203 connects a voltage to current converter 216 to the one or more LED lights 204 via the relay 203. The LED driver 218 then ceases to provide power to the one or more LEDs 204. Thus, the one or more LEDs 204 are prevented from simultaneously being driven by both the LED driver 218 and the battery backup system 200. Preferably, the AC mains 202 comes back online before the voltage across the battery 208 runs too low, and the LED driver 218 can resume providing power to the one or more LEDs 204 and the backup system 200 can replenish the charge on the battery 208.
