Electric control devices for battery power systems of motor vehicles, boats, and industrial systems to conduct, distribute, convert, protect, store, regulate, and manage electricity, namely, electric switches for batteries, battery combiners that allow for multiple batteries to be charged, battery isolators, low voltage disconnect switches, electric flasher switches, timers, solid state contactors, lighting dimmers, power management devices in the nature of voltage sensitive relays, automatic charging relays, time delay relays, high voltage contactors, bi-stable relays, and magnetically latching relays, galvanic isolators, indicator lights, voltage protection devices in the nature of low voltage disconnects, automatic power selectors in the nature of automatic charging relays, voltage sensitive relays, and source selectors, voltmeters, ammeters, current sensors, electric control panels, fuse blocks, bus bars, battery monitors, terminal blocks, solar panels for production of electricity, electric control panels, distribution boxes for electrical power, electric cables, feed-through fittings in the nature of power distribution modules, ATO Fuse Blocks, ATM Fuse Blocks, Circuit Breaker Blocks, Power Bars, Sealed Ground Blocks, and Break-Out Blocks, junction boxes, electric relays; Circuit breakers; Fuses; Electrical shunts that allow for electric currents to bypass a point in a circuit; Electric current switches; Electric connectors; Solenoid valves; Current converters; Voltage regulator converters; Battery chargers; Inverters for power supply