The Chargers regrouped in the fourth set after a sudden power outage in the third frame.
Akari raced to a commanding 20-11 advantage but encountered serious trouble in the closing stretch as the Cool Smashers made a determined rally to salvage the match.
Lacsina pushed the Chargers at match point, 24-18. Tots Carlos saved a point for Creamline before Jema Galanza pumped in back-to-back hits to close the gap, 24-21.
Chenie Tagaod came off the bench to punctuate Akari’s response to the Cool Smashers’ fightback with a kill to end the two-hour, 14-minute battle.
Not to be outshone was libero Justine Jazareno, who sparkled on floor defense that enabled the Chargers to turn garbage into gold.
Still, Jazareno brushed off praise, stressing that collective effort was key in the hard-earned victory.
The Chargers will try to string a fifth straight win against struggling Galeries Tower on Tuesday before taking on Farm Fresh to end the first round.
Creamline slipped to a 5-2 mark tied with Cignal behind league-leading PLDT (6-1).
Galanza finished with 16 points on 14 attacks and two kill blocks on top of seven excellent receptions to pace the Cool Smashers.
Carlos had 10 points, Pangs Panaga added nine while Bernadeth Pons got eight for Creamline.