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Makita 18V LXT 4Ah battery prices

Every genuine Makita 18V LXT 4Ah battery listing we found on eBay, single batteries and multi-packs, ranked by price per amp-hour including shipping. Updated Oct 11, 2026 15:16 UTC.

Cheapest new, per Ah$13.74

Cheapest used, per Ah$9.75

Cheapest single battery$39.00

Condition New Open box Refurbished Used

$/Ah	Price	Shipping	Ah	Wh	$/Wh	Part	Condition	Listing
$9.75	$39.00	free	4	72	$0.54	BL1840B	Used	Makita BL1840B 18V Batteries 4.0 AH works
$11.24	$44.95	$9.95	4	72	$0.62		Used	MAKITA 4.0AH BATTERY 18V (NLG056519)
$11.25	$45.00	free	4	72	$0.62	BL1840B	Used	MAKITA (BL1840B) GENUINE 18V 4.0Ah 72Wh RECHARGEABLE LI-ION BATTERY -- [USED]
$12.00	$47.99	$8.00	4	72	$0.67	BL1840B	Used	MAKITA BL1840B (P08040155)
$12.00	$47.99	$8.00	4	72	$0.67	BL1840B	Used	MAKITA BL1840B (P08040156)
$12.00	$40.00	+ ship	4	72	$0.67		Used	Makita 18V LXT 4.0Ah Lithium‑Ion Rechargeable Battery Pack
$12.49	$49.98	$9.99	4	72	$0.69	BL1840B	Used	Makita BL1840B 18V LXT 4.0Ah Battery USED
$12.50	$49.99	free	4	72	$0.69		Used	Makita 18V LXT Lithium-Ion High Capacity Battery Pack 4.0Ah with Fuel Gauge
$12.50	$50.00	$15.00	4	72	$0.69	BL1840B	Used	MAKITA BL1840B (MGP052972)
$12.75	$50.99	$15.00	4	72	$0.71	BL1840B	Used	Makita 18v battery 4.0 ah BL1840B
$13.74	$54.95	free	4	72	$0.76	BL1840B	Open box	Makita 18-Volt 4.0 Ah Lithium-ion Battery BL1840B (OB)
$13.75	$54.99	free	4	72	$0.76		Open box	Makita 18V LXT Lithium-Ion High Capacity Battery Pack 4.0Ah with Fuel Gauge
$14.50	$49.99	+ ship	4	72	$0.81	BL1840	Used	MAKITA (BL1840) GENUINE 18V 4.0Ah 72Wh LI-ION BATTERY
$16.25	$65.00	free	4	72	$0.90	BL1840B	Open box	Makita 18V LXT 4.0Ah BL1840B Battery, Black - Single #2204
$16.75	$67.00	$8.00	4	72	$0.93	BL1840B	Open box	Makita 18-Volt 4.0 Ah Lithium-ion Battery BL1840B Genuine OEM
$17.50	$69.99	free	4	72	$0.97		Open box	Makita 18V LXT Lithium-Ion High Capacity Battery Pack 4.0Ah with Fuel Gauge
$18.25	$65.00	+ ship	4	72	$1.01		Used	Makita 18V LXT 4.0Ah Lithium‑Ion Rechargeable Battery Pack
$24.25	$89.00	+ ship	4	72	$1.35	BL1840B	Used	Makita BL1840B 18V LXT Lithium-Ion 4.0Ah Battery

Showing 18 of 18 listings

Buying tips

Only genuine batteries are listed: we drop "for DeWalt / compatible / replacement" packs, whose stated capacity is often far above the real one, and capacities the maker does not sell for that platform. Within one platform the price per Ah is a fair comparison; across platforms compare the price per Wh, because an Ah of a 12V pack holds less energy than an Ah of an 18V or 40V pack. High-output packs (Milwaukee High Output and Forge, DeWalt PowerStack, FlexVolt, Ryobi HP) deliver more power to demanding tools at a higher price per Ah.

How this table works

We collect Buy It Now listings from eBay US several times a day in the Power Tool Batteries category, filtered by the maker's brand and voltage, and divide the total price, including shipping, by the amp-hours (multi-packs by their total). FlexVolt packs are counted at their 20V rating. We remove chargers, kits with tools, adapters, holders, empty cases, dead or untested packs, aftermarket "compatible" batteries and offers far below every other listing.