A (Patent Pending) controlller, that consist of multiple-stages, that uses sequential order to supply voltage to a grid, while using said sequential order, to also maintain a charge on multiple batteries in multiple stages. (How does it works?). During operation, a maximum of three batteries would be connected to the unit, along with the corresponding charging supply. The charger is essential to the maintainance of the unit. Without the charger, the unit operates in simi automatic mode, however, with the charger, the unit works in full automatic. The unit consist of three Battery Pod zones. Has the discharge on pod-1 commence, pod-2 and pod-3 remains in charge mode. At the end of pod-1 cycle, the processor disable it from the controller, and activate a charging voltage to said pod. It also activate pod-2 as the main supply pod in the unit, then goes into stand-by mode. In this configuration, pod-1 is in charge mode, pod-2 is the main supply zone, and pod-3 is also in charge mode. At the end of pod-2 discharge, the processor again commence by disabling pod-2 and activate the charge to said pod, it also activae pod-3 has the main supply zone, and hold. At the end of pod-3 the unit repeats its self, by automatically disable pod-3 and activate the charger to said pod, then pod-1 is activate has the main supply zone.  In this configuration, Pod-1 supplies voltage again, while  pod-2 and pod-3 remain in charge mode, which is the original configuration.