‹ All Milwaukee M12 chargers
Milwaukee · Charger
Charger 
Charges
Milwaukee M12 packs
Times
40 min to 2 hr 10 min, across 6 packsCharge times ›
Specs
From Milwaukee's own documentationChecked 27 Sep 2026
Milwaukee · Charger
Milwaukee M12C4 M12 C4 4-bay sequential charger (240V)
3A output per bay 4 bays M12
Milwaukee M12 C4 4-bay sequential charger (240V).
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3AOutput per baymaker figure
4Baysmaker figure
6Packs with a charge timefrom Milwaukee's figures
40 minQuickest packthe smallest it charges
How long each pack takes
Milwaukee's own charge times on the M12C4, smallest pack first. Packs Milwaukee gives no time for are left out.
M12B22.0Ah REDLITHIUM
40 min
M12HB2.52.5Ah HIGH OUTPUT
55 min
M12B33.0Ah REDLITHIUM
1 hr 10 min
M12B44.0Ah REDLITHIUM
1 hr 20 min
M12HB55.0Ah HIGH OUTPUT
1 hr 50 min
M12B66.0Ah REDLITHIUM
2 hr 10 min
Milwaukee's own figures.
Full specs
From Milwaukee's own documentation, checked 27/09/2026. "Not listed" where Milwaukee doesn't publish a figure.
Type4-bay sequential charger
Output3A per bay
Bays4
Listed forMilwaukee M12
Model codeM12C4
Other Milwaukee M12 chargers
Faster chargers, and ones with more bays. Lowest price we track first.
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M12C4 questions
Which batteries does the M12C4 charge?
It charges Milwaukee M12 packs. Milwaukee gives a charge time on it for 6 of the packs we list: M12B2, M12HB2.5, M12B3, M12B4, M12HB5, M12B6.
How long does the M12C4 take to charge a pack?
From Milwaukee's own figures: M12B2 (2.0Ah): 40 min, M12HB2.5 (2.5Ah): 55 min, M12B3 (3.0Ah): 1 hr 10 min, M12B4 (4.0Ah): 1 hr 20 min, M12HB5 (5.0Ah): 1 hr 50 min, M12B6 (6.0Ah): 2 hr 10 min.