‹ All HiKOKI 18V batteries

18V

4.0Ah BSL1840M 18V · 0.56kg No product photo yet

Fits

31 HiKOKI 18V toolsSee them ›

Charges

40 min on the UC36YSL2, the fastest of 3Charge times ›

Specs

From HiKOKI's own documentation

HiKOKI · 18V platform

HiKOKI BSL1840M 18V 4.0Ah battery

4.0Ah 72Wh 0.56kg 21700 cylindrical cells Fuel gauge

HiKOKI BSL1840M 4.0Ah 18V slide pack (72Wh), 0.56kg. Fuel gauge: Yes.

Adds it to My Tools, kept on this device

Price

No retailer price yet

None of the retailers we track lists it right now.

4.0AhCapacitymaker figure

72WhEnergymaker figure

0.56kgWeightmaker figure

129Wh/kgEnergy for its weightworked out

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 HiKOKI 18V batteries ›

ModelSizeEnergyWeightLowest pricePer Ah

BSL1820M 2.0Ah 36Wh 0.38kg No price yet

BSL1830C 3.0Ah 54Wh 0.38kg No price yet

BSL1840M This one 4.0Ah 72Wh 0.56kg No price yet

BSL1850C 5.0Ah 90Wh 0.55kg No price yet

BSL1850MA 5.0Ah 90Wh 0.65kg No price yet

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

Full specs

From HiKOKI's own documentation. "Not listed" where HiKOKI doesn't publish a figure.

Voltage18V

Capacity4.0Ah

Energy72Wh

ChemistryLi-ion (cylindrical)

Cell type21700 cylindrical

Weight0.56kg

Size (L × W × H)134 × 83 × 54 mm

Fuel gaugeYes

PlatformHiKOKI 18V

Model codeBSL1840M

Charge times

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

UC36YSL2Super fast charger

40 min

No retailer price yet

UC18YFSLFast charger

1 hr

No retailer price yet

UC18YKSLStandard charger

2 hr

No retailer price yet

HiKOKI's own figures.

Fits these tools

Every HiKOKI 18V tool takes this pack. It won't fit other brands' tools.

All 31 HiKOKI 18V tools ›

SDS+ Hammer Drills6 tools › Reciprocating Saws4 tools › Multi-Tools3 tools › Second Fix Nailers3 tools › First Fix Nailers2 tools › Jigsaws2 tools › Handheld Vacuums2 tools › Concrete & Steel Nailers1 tool › Positive Placement Nailers1 tool › Pin Nailers1 tool › Random Orbital Sanders1 tool › Trim Routers & Edge Trimmers1 tool › Brad Nailers1 tool › Planers1 tool › Angle Drills1 tool › Site Vacuums1 tool ›

4.0Ah 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

HiKOKIBSL1840M 72Wh 0.56kg 129 No price yet

BoschPROCORE18V-40 72Wh 0.52kg 140 £54.99£13.75

Bosch Green1600A011T8 72Wh 0.64kg 113 £59.95£14.99

DeWaltDCB182 72Wh 0.61kg 118 £49.95£12.49

Einhell4511396 72Wh 0.67kg 107 £36.95£9.24

FestoolBP18Li4.0HPC 72Wh 0.6kg 120 £155.95£38.99

BSL1840M questions

Which tools does the BSL1840M fit?

It fits every HiKOKI 18V tool. It won't fit other brands' tools.

How long does the BSL1840M take to charge?

From HiKOKI's own figures: UC36YSL2: 40 min, UC18YFSL: 1 hr, UC18YKSL: 2 hr.