M18B4 vs M18B5 vs M18B5-CR
Same fit: these run the same tools
Lowest price we track at UK retailers, updated daily. We may earn a commission
They differ in 4 of 5 areas
Same tools, so this is about size, weight and cost. No overall winner: pick the size that suits the job.
EnergyThe M18B5 stores 25% more than the M18B4: 90Wh vs 72Wh.
PriceThe M18B4 is the cheapest of the three today, at £57.95.
Price per AhM18B5 £11.99, M18B4 £14.49, M18B5-CR £17.59.
ChemistryM18B4: Li-ion (cylindrical); M18B5: Li-ion (cylindrical); M18B5-CR: Li-ion.
Good to know
Same toolsAll three fit every Milwaukee M18 tool.
Weight0.7kg: too close to call.
Same chargersM12-18FC, M18DFC, M18PC6, M18DBSC, M18MDBSC, M18MPC6, M12-18GBC4, M12-18AC, M1418C6, M1418C6-110V and M18TC charge all three. Charge times are in the specs below.
Energy
M18B4
72Wh
M18B5
90Wh
M18B5-CR
90Wh
Maker figure, or volts × Ah where they don't publish one. Ah and Wh explained ›
Weight
M18B4
0.7kg
M18B5
0.7kg
M18B5-CR
0.7kg
Within 0.1kg: too close to call.
Price per Ah
M18B4
£14.49
M18B5
£11.99
M18B5-CR
£17.59
Lowest price we track ÷ Ah. Full specs
M18B4M18B5M18B5-CR
Voltage18V18V18V
Capacity4.0Ah5.0Ah5.0Ah
Energy72Wh90Wh90Wh
Weight0.7kg0.7kg0.7kg
Energy for its weight103Wh/kg (worked out)129Wh/kg (worked out)129Wh/kg (worked out)
ChemistryLi-ion (cylindrical)Li-ion (cylindrical)Li-ion
Cell typeNot listedNot listedNot listed
Fuel gaugeYesYesYes
Size (L × W × H)Not listedNot listedNot listed
Charge time, M12-18FC, M18DFC, M18PC6, M18DBSC, M18MDBSC, M18MPC6, M12-18GBC452 min59 min59 min
Charge time, M12-18AC, M1418C6, M1418C6-110V1 hr 20 min1 hr 40 min1 hr 40 min
Charge time, M18TC1 hr 20 min1 hr 45 min1 hr 45 min
Lowest price£57.95£59.95£87.95
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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