Yes, it shut down from the 4 hr timer, but you were not finished the absorption stage yet. So un-plug the 120v, wait a couple minutes, plug 120v back in and---oops it won't go back into Boost, because the batts are too high in SOC.
You have to hope the batts will eventually reach 100% at 13.6 (don't count on it!)
This is the beauty of the PowerMax adjustable. It stays at your version of "Boost" (might be 14.8 or when colder 15.1, whatever) until YOU decide when to drop it to 13.6 (or any other voltage depending on temperature).
The PD Charge Wiz will let you do more time at Boost too, but no adjustments up or down for temperature.
