  This paper considers an energy harvesting sensor node with battery size
$B_{max}$ that recharges its battery through an incremental energy harvesting
process and receives updates from a single information source in slotted time.
The node actively decides to power down (OFF) or up (ON) the communication
circuitry for a portion of its operation time in order to maintain energy
efficiency. Update packets arriving in ON (OFF) periods are received
(discarded). A deterministic energy cost per time is paid during ON periods.
The power down decision can be in partial or full nature, yielding various
options for deciding ON-OFF intervals. We develop age-threshold based power
ON-OFF schemes to minimize age of information at the node subject to energy
harvesting constraints with partial and full power down options for $B_{max}=1$
and $B_{max}=\infty$ cases.
