Abstract: Apparatus, systems, and methods for monitoring one or more batteries are disclosed. One such apparatus may include a battery management device. The battery management device may include a sensor configured to detect a characteristic of a battery, a processor communicatively connected with the sensor to receive a signal indicative of the characteristic of the battery, a network interface to send the signal to a server through a network and to receive an instruction from the server through the network, and a control circuit to control one or more aspects of the battery based on the received instruction.

Abstract: Two-way voltage switching may be performed using a single switch mode regulator circuit such that only control signals and feedback signals are used to select the direction of the power path. Such voltage switching may be between a battery and a supply rail that operate at different voltage levels. The voltage level of the battery's output may be converted by the regulator to the voltage level of the supply rail such that at least a portion of the power drawn by the system from the supply rail is from the rechargeable battery. To charge the rechargeable battery from the supply rail, the voltage of the supply rail may be converted to the voltage level of the battery using the same switch mode regulator. To select between discharging the battery into the supply rail or charging the battery from the supply rail, no power path circuitry need be switched.

Abstract: Various embodiments disclose methods and systems for controlling operation of a regulator controller integrated circuit. The regulator controller integrated circuit may include a run input and a voltage supply input. A voltage supply, having an on state and an off state, may be coupled with the voltage supply input of the regulator controller integrated circuit. A JFET that has a source, a drain, and a gate may be present. The source of the JFET may be coupled with electrical ground. The drain of the JFET may be coupled with the run input of the regulator controller integrated circuit. The gate of the JFET may be coupled with the voltage supply. Such embodiments may disable a regulator unless a supply voltage is present without requiring a supply voltage for control circuitry.