5v Battery Back-Up Node

) High Quality Dual Hybrid IC, 2) 7 Hours Back-Up time in Single Battery / 14 Hours Back-Up time In double Battery, 3) 7.4V 2600 mAH LI-ION Battery, 4) Battery Full Charge Time 4 Hours, 5) Battery Protection Circuit, 6) Very Low Power Consumption Less Then 2 Watt, 7) 12V DC External Charging and Operating, 8) Excellent Frequency Response