We have two boards, the Sunny Buddy, LT3652 based, and the DC1621 with the LTM8062. More o less similars. In both cases, it occurs that they present an intermediate state between low current shutdown mode and charging mode. In this transition state, the circuit sinks a current of several milliamps draining the battery. Depending on the light conditions, this state can be prolonged over time. Are we doing something wrong or should we manage the SHDN # pin in a different way of a simple voltage divider? Perhaps with a comparator?