Specs from the makers' own documentation Battery compatibility built in UK retailer prices, updated daily 25+ years of trade experience
‹ All Milwaukee M12 batteries
M12 Milwaukee M12HB2.5
Fits
35 Milwaukee M12 toolsSee them ›
Charges
40 min on 2 of the 5 chargers Milwaukee lists for itCharge times ›
Specs
From Milwaukee's own documentationChecked 27 Sep 2026
Milwaukee · M12 platform

Milwaukee M12HB2.5 12V 2.5Ah HIGH OUTPUT battery

2.5Ah 30Wh 0.2kg

Milwaukee M12 HB2.5 2.5Ah 12V REDLITHIUM pack.

Adds it to My Tools, kept on this device
Lowest price we track
£32.95at Tooled Up · + £6.95 delivery · Available to order
View at Tooled Up ›
Compare retailersTotal with delivery
Tooled Up Lowest£32.95 + £6.95 delivery · Available to order£39.90View ›
My Tool Shed£32.95 + £6.95 delivery · Available to order£39.90View ›
Prices from UK retailer feeds, updated daily.We may earn a commission
2.5AhCapacitymaker figure
30WhEnergymaker figure
0.2kgWeightmaker figure
150Wh/kgEnergy for its weightworked out
£13.18Per 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 M12 batteries ›
ModelSizeEnergyWeightLowest pricePer Ah
M12B2 2.0Ah 24Wh 0.2kg £25.95 £12.98 per Ah
M12HB2.5 This one 2.5Ah 30Wh 0.2kg £32.95 £13.18 per Ah
M12B3 3.0Ah 36Wh 0.2kg £29.95 £9.98 per Ah
M12B4 4.0Ah 48Wh 0.4kg £39.95 £9.99 per Ah
M12HB5 5.0Ah 60Wh 0.42kg £59.95 £11.99 per Ah
M12B6 6.0Ah 72Wh 0.4kg £49.95 £8.33 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 27/09/2026. "Not listed" where Milwaukee doesn't publish a figure.

Voltage12V
Capacity2.5Ah
Energy30Wh
ChemistryLi-ion
Cell typeNot listed
Weight0.2kg
Size (L × W × H)Not listed
Fuel gaugeNot listed
ExtrasREDLINK Intelligence, Resistant housing
Released2022
PlatformMilwaukee M12
Model codeM12HB2.5

Charge times

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

M12-18FCMulti-voltage fast charger
40 min
£59.95 at Tooled Up ›
M12-18GBC4Four-bay gangbox charger (2 at once)
40 min
No retailer price yet
C12CCharger
55 min
£44.95 at Tooled Up ›
M12-18ACIn-car charger
55 min
£79.95 at Tooled Up ›
M12C44-bay sequential charger
55 min
£78.95 at Tooled Up ›

Milwaukee's own figures. We may earn a commission

Fits these tools

Every Milwaukee M12 tool takes this pack. It won't fit other brands' tools.

All 35 Milwaukee M12 tools ›
Ratchets11 tools › Drill Drivers4 tools › Multi-Tools2 tools › Reciprocating Saws2 tools › Belt Files2 tools › Random Orbital Sanders2 tools › Combi Drills2 tools › Rotary Polishers1 tool › Detail & Delta Sanders1 tool › Mini & Spot Repair Sanders1 tool › Planers1 tool › Brad Nailers1 tool › Jigsaws1 tool › Handheld Vacuums1 tool › Site Vacuums1 tool › Angle Drills1 tool › Circular Saws1 tool ›

M12HB2.5 questions

Which tools does the M12HB2.5 fit?

It fits every Milwaukee M12 tool. It won't fit other brands' tools.

How long does the M12HB2.5 take to charge?

From Milwaukee's own figures: M12-18FC: 40 min, M12-18GBC4: 40 min, C12C: 55 min, M12-18AC: 55 min, M12C4: 55 min.

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