Specs from the makers' own documentation Battery compatibility built in UK retailer prices, updated daily 25+ years of trade experience
‹ All Makita 40V XGT batteries
40V XGT Makita BL4040
Fits
91 Makita 40V XGT toolsSee them ›
Charges
45 min on 4 of the 7 chargers Makita lists for itCharge times ›
Specs
From Makita's own documentationChecked 14 Jun 2026
Makita · 40V XGT platform

Makita BL4040 40V max (36V nom) 4.0Ah XGT battery

4.0Ah 144Wh 1kg Fuel gauge

XGT 40V max 4.0Ah (144Wh) standard general-use pack with 4-LED gauge.

Adds it to My Tools, kept on this device
Lowest price we track
£169.95at Tooled Up · + £6.95 delivery
View at Tooled Up ›
Compare retailersTotal with delivery
Tooled Up Lowest£169.95 + £6.95 delivery£176.90View ›
My Tool Shed£169.95 + £6.95 delivery£176.90View ›
Machine Mart£189.00 + £4.99 delivery£193.99View ›
Prices from UK retailer feeds, updated daily.We may earn a commission
4.0AhCapacitymaker figure
144WhEnergymaker figure
1kgWeightmaker figure
144Wh/kgEnergy for its weightworked out
£42.49Per 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 Makita 40V XGT batteries ›
ModelSizeEnergyWeightLowest pricePer Ah
BL4025 2.5Ah 90Wh 0.71kg £79.95 £31.98 per Ah
BL4040 This one 4.0Ah 144Wh 1kg £169.95 £42.49 per Ah
BL4040F 4.0Ah 144Wh 0.94kg £189.95 £47.49 per Ah
BL4050F 5.0Ah 180Wh 1.3kg £214.95 £42.99 per Ah
BL4080F 8.0Ah 288Wh 1.9kg £289.95 £36.24 per Ah
BL4080H 8.0Ah 288Wh 1.8kg £314.95 £39.37 per Ah

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

Full specs

From Makita's own documentation, checked 14/06/2026. "Not listed" where Makita doesn't publish a figure.

Voltage40V max (36V nom)
Capacity4.0Ah
Energy144Wh
ChemistryLi-ion (cylindrical)
Cell typeNot listed
Weight1kg
Size (L × W × H)133 × 82 × 71 mm
Fuel gaugeYes
PlatformMakita 40V XGT
Model codeBL4040

Charge times

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

191E08-6Rapid charger
45 min
£69.99 at Tooled Up ›
191N22-6Rapid charger
45 min
£79.95 at Tooled Up ›
191N14-5Twin-port rapid charger
45 min
£134.00 at Machine Mart ›
191N07-2Twin-port rapid charger
45 min
£135.95 at Tooled Up ›
191M92-9Standard charger
1 hr 7 min
£55.95 at Tooled Up ›
191M89-8Standard charger
1 hr 7 min
£55.95 at Tooled Up ›
DC40WATwo-port charger (wall-mountable)
3 hr 30 min
No retailer price yet

Makita's own figures. We may earn a commission

Fits these tools

Every Makita 40V XGT tool takes this pack. It won't fit other brands' tools.

All 91 Makita 40V XGT tools ›
Angle Grinders17 tools › Impact Wrenches9 tools › Circular Saws8 tools › Dust Extractors6 tools › SDS+ Hammer Drills5 tools › Random Orbital Sanders4 tools › Site Vacuums4 tools › Handheld Vacuums4 tools › Demolition Hammers3 tools › Reciprocating Saws3 tools › Impact Drivers3 tools › Combi Drills3 tools › Sheet & Palm Sanders2 tools › First Fix Nailers2 tools › SDS Max Hammer Drills2 tools › Jigsaws2 tools › Metal Cutting Saws2 tools › Mitre Saws2 tools › Multi-Tools1 tool › Rotary Polishers1 tool › Belt Sanders1 tool › Detail & Delta Sanders1 tool › Trim Routers & Edge Trimmers1 tool › Routers1 tool › Brad Nailers1 tool › Planers1 tool › Angle Drills1 tool › Plunge Saws1 tool ›

BL4040 questions

Which tools does the BL4040 fit?

It fits every Makita 40V XGT tool. It won't fit other brands' tools.

How long does the BL4040 take to charge?

From Makita's own figures: 191E08-6: 45 min, 191N22-6: 45 min, 191N14-5: 45 min, 191N07-2: 45 min, 191M92-9: 1 hr 7 min, 191M89-8: 1 hr 7 min, DC40WA: 3 hr 30 min.

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