M12-18GBC4
Four-bay gangbox charger (2 at once) No product photo yet
Milwaukee · Charger
Milwaukee M12-18GBC4 M12-18 GBC4 gangbox charger
Milwaukee M12-18 GBC4 magnetic gangbox charger with two M18 bays and two M12 or M18 bays, charging two packs at a time, plus a work light.
How long each pack takes
Milwaukee's own charge times on the M12-18GBC4, smallest pack first. Packs Milwaukee gives no time for are left out.
Milwaukee's own figures.
Full specs
From Milwaukee's own documentation, checked 30/09/2026. "Not listed" where Milwaukee doesn't publish a figure.
Other Milwaukee M12 chargers
Faster chargers, and ones with more bays. Lowest price we track first.
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M12-18GBC4 questions
Which batteries does the M12-18GBC4 charge?
It charges Milwaukee M12, Milwaukee M18 packs. Milwaukee gives a charge time on it for 15 of the packs we list: M12B2, M18B2, M12HB2.5, M18HB3, M12B3, M12B4, M18B4, M18B5-CR, M18B5, M12HB5, M18HB5.5, M18FB6, M12B6, M18FB8, M18FB12.
How long does the M12-18GBC4 take to charge a pack?
From Milwaukee's own figures: M12B2 (2.0Ah): 26 min, M18B2 (2.0Ah): 26 min, M12HB2.5 (2.5Ah): 40 min, M18HB3 (3.0Ah): 36 min, M12B3 (3.0Ah): 50 min, M12B4 (4.0Ah): 52 min, M18B4 (4.0Ah): 52 min, M18B5-CR (5.0Ah): 59 min, M18B5 (5.0Ah): 59 min, M12HB5 (5.0Ah): 1 hr 15 min, M18HB5.5 (5.5Ah): 1 hr, M18FB6 (6.0Ah): 1 hr, M12B6 (6.0Ah): 1 hr 35 min, M18FB8 (8.0Ah): 1 hr 27 min, M18FB12 (12.0Ah): 2 hr 10 min.