Referring to FIG. 1, an exemplary embodiment of a battery monitoring system 100 is shown. The battery monitoring system 100 can include a battery 170, a primary load 180, a secondary load 185, a current monitoring module 110, and an interface module 150. The current monitoring module 110 may be electrically connected to a positive terminal 170a of the battery 170. The current monitoring module 110 can also be electrically connected to the primary load 180 and the secondary load 185. The primary and secondary loads 180, 185 (hereinafter “l(fā)oads 180, 185”), can further be electrically connected to the negative terminal 170b of the battery 170 to create a circuit which can be used to power the loads. In some embodiments, the primary load 180 can be a refrigeration unit, while the secondary load 185 may include one or more of a fan, a light, a display, a transducer, a pump, or the like.

As noted, the battery 170 may have a positive terminal 170a and a negative terminal 170b. The positive terminal 170a can be at a supply voltage and the negative terminal 170b can be at a return voltage. The difference between the supply voltage and the return voltage, or battery potential, can cause current to flow in the circuit, thereby powering the loads 180, 185. Electric current 175 can flow from the positive terminal 170a of the battery 170 to the current monitoring module 110 at the supply voltage.