Abstract: A metering device for attaching to a container configured to store a fluid, the device including: a valve configured to control the amount of fluid dispensed from the container; a user interface comprising at least one control configured to operate the valve between an open position and a closed position; and a control circuit configured to set a threshold amount of the fluid to be dispensed from the container, where the control circuit is configured to override the user interface and close the valve when the threshold amount of fluid to be dispensed has been reached.

Abstract: A computer-implemented method including: receiving a set of data from a battery, the set of data including battery voltage and current data obtained over a period of time; preparing a plurality of subsets of the set of data, wherein each subset corresponds to a subperiod of the period of time; determining a state of health of the battery versus time by fitting a battery model to the subsets, where the parameters of the battery model include a state of charge of the battery at a particular point of time in each subperiod and the state of health, wherein the time dependence of the state of health is controlled thereby limiting the magnitude of the temporal rate of change of the state of health; and providing an alert in response to the state of health meeting a particular criterion.

Abstract: A computer-implemented method including: receiving a set of data from a battery, the set of data including battery voltage and current data obtained over a period of time; preparing a plurality of subsets of the set of data, wherein each subset corresponds to a subperiod of the period of time; determining a state of health of the battery versus time by fitting a battery model to the subsets, where the parameters of the battery model include a state of charge of the battery at a particular point of time in each subperiod and the state of health, wherein the time dependence of the state of health is controlled thereby limiting the magnitude of the temporal rate of change of the state of health; and providing an alert in response to the state of health meeting a particular criterion.