Specs from the makers' own documentation Battery compatibility built in UK retailer prices, updated daily 25+ years of trade experience
‹ All Milwaukee M18 batteries
M18 Milwaukee M18FB12
Fits
72 Milwaukee M18 toolsSee them ›
Charges
45 min on 2 of the 9 chargers Milwaukee lists for itCharge times ›
Specs
From Milwaukee's own documentationChecked 14 Jun 2026
Milwaukee · M18 platform

Milwaukee M18FB12 18V 12.0Ah FORGE battery

12.0Ah 216Wh 1.51kg Tabless cells Fuel gauge

M18 FORGE 12.0Ah tabless pack (216Wh), 1.51kg, with COOL-CYCLE active cooling and a sunlight-readable fuel gauge. Milwaukee says 50% more power than its HIGH OUTPUT 12.0Ah.

Adds it to My Tools, kept on this device
Lowest price we track
£239.95at Tooled Up · + £6.95 delivery
View at Tooled Up ›
Compare retailersTotal with delivery
Tooled Up Lowest£239.95 + £6.95 delivery£246.90View ›
My Tool Shed£239.95 + £6.95 delivery£246.90View ›
Prices from UK retailer feeds, updated daily.We may earn a commission
12.0AhCapacitymaker figure
216WhEnergymaker figure
1.51kgWeightmaker figure
143Wh/kgEnergy for its weightworked out
£20.00Per Ahat the lowest price we track

Other sizes in this range

Same fit, same tools. Bigger packs run longer and weigh more. Pick the size for the job.

Compare these sizes ›All Milwaukee M18 batteries ›
ModelSizeEnergyWeightLowest pricePer Ah
M18B2 2.0Ah 36Wh 0.4kg £56.95 £28.48 per Ah
M18HB3 3.0Ah 54Wh 0.7kg £64.95 £21.65 per Ah
M18B4 4.0Ah 72Wh 0.7kg £57.95 £14.49 per Ah
M18B5 5.0Ah 90Wh 0.7kg £59.95 £11.99 per Ah
M18B5-CR 5.0Ah 90Wh 0.7kg £87.95 £17.59 per Ah
M18HB5 5.0Ah 90Wh 0.79kg No price yet
M18HB5-CR 5.0Ah 90Wh 0.79kg No price yet
M18HB5.5 5.5Ah 99Wh 1.1kg £99.95 £18.17 per Ah
M18FB6 6.0Ah 108Wh 1.03kg £199.95 £33.33 per Ah
M18FB8 8.0Ah 144Wh 1.08kg No price yet
M18FB12 This one 12.0Ah 216Wh 1.51kg £239.95 £20.00 per Ah

Prices are the lowest we track at UK retailers, updated daily. Weights from Milwaukee. Energy is Milwaukee's figure, or worked out from volts × Ah where they don't publish one.

Full specs

From Milwaukee's own documentation, checked 14/06/2026. "Not listed" where Milwaukee doesn't publish a figure.

Voltage18V
Capacity12.0Ah
Energy216Wh
ChemistryLi-ion (cylindrical)
Cell typeTabless
Weight1.51kg
Size (L × W × H)Not listed
Fuel gaugeYes
ExtrasREDLINK Intelligence, COOL-CYCLE, Resistant housing, Sunlight-readable fuel gauge
Released2024
PlatformMilwaukee M18
Model codeM18FB12

Charge times

Milwaukee's own figures, fastest first. Each charger opens its own page.

M18DBSCDual-bay super charger (simultaneous, adaptive)
45 min
No retailer price yet
M18MDBSCMobile dual-bay super charger (simultaneous, adaptive)
45 min
No retailer price yet
M12-18FCMulti-voltage fast charger
2 hr 10 min
£59.95 at Tooled Up ›
M18DFCDual-bay rapid charger
2 hr 10 min
£99.95 at Tooled Up ›
M18PC66-bay rapid charger (2 at once)
2 hr 10 min
£238.95 at Tooled Up ›
M18MPC6Six-bay rapid charger (2 at once)
2 hr 10 min
No retailer price yet
M12-18GBC4Four-bay gangbox charger (2 at once)
2 hr 10 min
No retailer price yet
M18TCUSB-C mini charger and power supply
4 hr
No retailer price yet
M12-18ACIn-car charger
4 hr 45 min
£79.95 at Tooled Up ›

Milwaukee's own figures. We may earn a commission

Fits these tools

Every Milwaukee M18 tool takes this pack. It won't fit other brands' tools.

All 72 Milwaukee M18 tools ›
Circular Saws8 tools › Angle Grinders8 tools › Reciprocating Saws6 tools › Site Vacuums5 tools › Combi Drills5 tools › SDS+ Hammer Drills4 tools › Second Fix Nailers3 tools › Jigsaws3 tools › Impact Drivers3 tools › Multi-Tools2 tools › Dual Action Polishers2 tools › Random Orbital Sanders2 tools › First Fix Nailers2 tools › SDS Max Hammer Drills2 tools › Dust Extractors2 tools › Angle Drills2 tools › Impact Wrenches2 tools › Table Saws1 tool › Rotary Polishers1 tool › Belt Sanders1 tool › Sheet & Palm Sanders1 tool › Trim Routers & Edge Trimmers1 tool › Routers1 tool › Planers1 tool › Brad Nailers1 tool › Handheld Vacuums1 tool › Plunge Saws1 tool › Metal Cutting Saws1 tool ›

12.0Ah packs from other brands

Only useful if you haven't picked a platform yet: packs don't swap between brands. Shown on neutral figures only.

Not sure which platform? ›
BatteryEnergyWeightWh per kgLowest pricePer Ah
MilwaukeeM18FB12 216Wh 1.51kg 143 £239.95£20.00
BoschPROCORE18V-120 216Wh 1.35kg 160 No price yet
DeWaltDCB548 216Wh 1.46kg 148 £229.95£19.16
MakitaBL18120 216Wh 1.3kg 166 £129.95£10.83

M18FB12 questions

Which tools does the M18FB12 fit?

It fits every Milwaukee M18 tool. It won't fit other brands' tools.

How long does the M18FB12 take to charge?

From Milwaukee's own figures: M18DBSC: 45 min, M18MDBSC: 45 min, M12-18FC: 2 hr 10 min, M18DFC: 2 hr 10 min, M18PC6: 2 hr 10 min, M18MPC6: 2 hr 10 min, M12-18GBC4: 2 hr 10 min, M18TC: 4 hr, M12-18AC: 4 hr 45 min.

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