5.5Ah vs 6.0Ah vs 8.0Ah
Same fit: these run the same tools
Lowest price we track at UK retailers, updated daily. We may earn a commission
They differ in 1 of 3 areas
Same tools, so this is about size, weight and cost. No overall winner: pick the size that suits the job.
EnergyThe 8.0Ah stores 45% more than the 5.5Ah: 144Wh vs 99Wh.
Good to know
Same toolsAll three fit every Milwaukee M18 tool.
Weight1.03 to 1.1kg: too close to call.
Same chargersM18DBSC, M18MDBSC, M12-18FC, M18DFC, M18PC6, M18MPC6, M12-18GBC4, M18TC, M1418C6, M1418C6-110V and M12-18AC charge all three. Charge times are in the specs below.
Energy
M18HB5.5
99Wh
M18FB6
108Wh
M18FB8
144Wh
Maker figure, or volts × Ah where they don't publish one. Ah and Wh explained ›
Weight
M18HB5.5
1.1kg
M18FB6
1.03kg
M18FB8
1.08kg
Within 0.1kg: too close to call.
Price per Ah
M18HB5.5
£18.17
M18FB6
£33.33
M18FB8
No price yet
Lowest price we track ÷ Ah. Full specs
M18HB5.5M18FB6M18FB8
Voltage18V18V18V
Capacity5.5Ah6.0Ah8.0Ah
Energy99Wh108Wh144Wh
Weight1.1kg1.03kg1.08kg
Energy for its weight90Wh/kg (worked out)105Wh/kg (worked out)133Wh/kg (worked out)
ChemistryLi-ion (cylindrical)Li-ion (cylindrical)Li-ion (cylindrical)
Cell typeNot listedTablessTabless
Fuel gaugeYesYesYes
Size (L × W × H)Not listedNot listed135 × 86 × 89 mm
Charge time, M18DBSC, M18MDBSC35 min25 min45 min
Charge time, M12-18FC, M18DFC, M18PC6, M18MPC6, M12-18GBC41 hr1 hr1 hr 27 min
Charge time, M18TC1 hr 50 min2 hr2 hr 35 min
Charge time, M1418C6, M1418C6-110V2 hr 5 min2 hr 5 min3 hr 10 min
Lowest price£99.95£199.95No retailer price yet
Specs from each maker's own documentation. "Not listed" means the maker doesn't publish it or we haven't found it yet; it never counts as a difference.
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