BL4040 vs BL4040F vs BL4050F
Same fit: these run the same tools
Lowest price we track at UK retailers, updated daily. We may earn a commission
They differ in 5 of 6 areas
Same tools, so this is about size, weight and cost. No overall winner: pick the size that suits the job.
EnergyThe BL4050F stores 25% more than the BL4040: 180Wh vs 144Wh.
WeightThe BL4040F is the lightest at 0.94kg, the BL4050F the heaviest at 1.3kg.
PriceThe BL4040 is the cheapest of the three today, at £169.95.
Price per AhBL4040 £42.49, BL4050F £42.99, BL4040F £47.49.
SizeBL4040 133 × 82 × 71mm; BL4040F 133 × 82 × 71mm; BL4050F 152 × 79 × 75mm (L × W × H).
Good to know
Same toolsAll three fit every Makita 40V XGT tool, and pair up on the Makita 80V XGT tools.
Same chargers191E08-6, 191N22-6, 191N14-5, 191N07-2, 191M92-9, 191M89-8 and DC40WA charge all three. Charge times are in the specs below.
Energy
BL4040
144Wh
BL4040F
144Wh
BL4050F
180Wh
Maker figure, or volts × Ah where they don't publish one. Ah and Wh explained ›
Weight
BL4040
1kg
BL4040F
0.94kg
BL4050F
1.3kg
Price per Ah
BL4040
£42.49
BL4040F
£47.49
BL4050F
£42.99
Lowest price we track ÷ Ah. Full specs
BL4040BL4040FBL4050F
Voltage40V max (36V nom)40V max (36V nom)40V max (36V nom)
Capacity4.0Ah4.0Ah5.0Ah
Energy144Wh144Wh180Wh
Weight1kg0.94kg1.3kg
Energy for its weight144Wh/kg (worked out)153Wh/kg (worked out)138Wh/kg (worked out)
ChemistryLi-ion (cylindrical)Li-ion (cylindrical)Li-ion (cylindrical)
Cell typeNot listed21700 tablessNot listed
Fuel gaugeYesYesYes
Size (L × W × H)133 × 82 × 71 mm133 × 82 × 71 mm152 × 79 × 75 mm
Charge time, 191E08-6, 191N22-6, 191N14-5, 191N07-245 min45 min50 min
Charge time, 191M92-9, 191M89-81 hr 7 min1 hr 7 min1 hr 25 min
Charge time, DC40WA3 hr 30 min3 hr 30 min4 hr 20 min
Lowest price£169.95£189.95£214.95
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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