Abstract: Aspects of the present disclosure involve a monitoring system for a plurality of batteries connected in series. In one example, the monitoring system includes a monitoring circuit to be coupled across each of a plurality of distinct contiguous subsets of the batteries as a unit. The monitoring circuit includes at least one test signal generation circuit to generate a test signal and apply the test signal to each subset of the batteries, and at least one response measurement circuit to measure a response of each subset of the batteries to the test signal. The monitoring system also includes a control circuit to identify at least one of the subsets of the batteries as including a failing battery based on the measured response of each subset of the batteries.

Abstract: Aspects of the present disclosure involve a monitoring system for a plurality of batteries connected in series. In one example, the monitoring system includes a monitoring circuit to be coupled across each of a plurality of distinct contiguous subsets of the batteries as a unit. The monitoring circuit includes at least one test signal generation circuit to generate a test signal and apply the test signal to each subset of the batteries, and at least one response measurement circuit to measure a response of each subset of the batteries to the test signal. The monitoring system also includes a control circuit to identify at least one of the subsets of the batteries as including a failing battery based on the measured response of each subset of the batteries.

Abstract: A fountain aerator for propelling and aerating water includes a float having a flow tube extending therethrough for suspending the aerator in a body of water. A motor base assembly contains a motor provided with a rotatable output shaft. An open ended housing is spaced from the float and connected between the flow tube and the motor base assembly. A wear ring is secured within the housing and defines a central opening therein. A covered impeller is retained in the housing in spaced relationship with the float and is coupled to the motor output shaft for rotation therewith. The impeller has a series of radially extending blades which define a series of outlet passages in communication with the inlet. A flow straightener is spaced from the float and fixed to the housing in overlying, surrounding relationship with the impeller.