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Milwaukee M18 2Ah battery prices

Every genuine Milwaukee M18 2Ah 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$17.50

Cheapest used, per Ah$11.25

Cheapest single battery$19.95

$/Ah	Price	Shipping	Ah	Wh	$/Wh	Part	Condition	Listing
$11.25	$45.00	free	2 ×2	72	$0.62	48-11-1820	Used	[2-PACK] MILWAUKEE [48-11-1820] GENUINE M18 2.0 AH LI-ION BATTERY - [DIRTY/POOR]
$13.49	$26.99	free	2	36	$0.75	48-11-1820	Used	Milwaukee 48-11-1820 M18 18-Volt 2.0 Ah Lithium-Ion Compact Battery Pack
$13.97	$19.95	+ ship	2	36	$0.78	48-11-1820	Used	Milwaukee 48-11-1820 M18 Red Lithium CP 2.0Ah Battery
$14.00	$28.00	free	2	36	$0.78	48-11-1820	Used	MILWAUKEE 48-11-1820 M18 RED LITHIUM CP 2.0AH 18V BATTERY
$14.50	$29.00	free	2	36	$0.81	48-11-1820	Used	MILWAUKEE 48-11-1820 M18 2.0AH LI-ION BATTERY (B26010649)
$14.50	$29.00	$9.00	2	36	$0.81	48-11-1820	Used	Milwaukee 48-11-1820 CP2.0 M18 REDLITHIUM 18V Lithium-Ion Battery
$14.50	$29.00	free	2	36	$0.81	48-11-1820	Used	MILWAUKEE 48-11-1820 M18 RED LITHIUM CP 2.0AH 18V BATTERY (B26006334)
$14.99	$29.99	free	2	36	$0.83		Used	Milwaukee M18 CP2.0 Battery (WMP020504)
$15.00	$30.00	free	2	36	$0.83	48-11-1820	Used	Milwaukee M18 REDLITHIUM 18V Lithium-Ion Battery 48-11-1820 240302
$15.64	$31.28	$5.78	2	36	$0.87	48-11-1820	Used	Milwaukee 48-11-1820 M18 REDLITHIUM CP2.0 Battery
$15.99	$31.99	$7.00	2	36	$0.89		Used	MILWAUKEE TOOLS M18 RED LITHIUM CP 2.0 (GO1070172)
$15.99	$31.99	$7.00	2	36	$0.89	48-11-1820	Used	Milwaukee 48-11-1820 M18 18V 2.0Ah Battery Black and Red (GO1070256)
$16.50	$32.99	free	2	36	$0.92	48-11-1820	Used	Milwaukee 48-11-1820 M18 18V Redlithium CP 2.0 Battery Pack
$16.99	$33.98	$10.99	2	36	$0.94		Used	Milwaukee M18 REDLITHIUM CP2.0 18V 2.0Ah Battery Pack, Black/Red
$17.00	$33.99	$4.00	2	36	$0.94		Used	Milwaukee M18 CP2.0 Battery (WMP021564)
$17.00	$34.00	free	2	36	$0.94		Used	Milwaukee M18 REDLITHIUM CP2.0 18V Lithium-Ion Battery 2.0Ah
$17.00	$34.00	$9.00	2	36	$0.94	48-11-1820	Used	Milwaukee M18 REDLITHIUM CP2.0 18V 2.0Ah Battery Pack 48-11-1820 - Genuine
$17.12	$34.24	free	2	36	$0.95		Used	Milwaukee M18 REDLITHIUM CP2.0 18V 2.0Ah Battery Pack Black/Red
$17.48	$34.95	free	2	36	$0.97		Used	Milwaukee M18 18-Volt 2.0 Ah Lithium-Ion Compact Battery
$17.48	$34.95	free	2	36	$0.97	48-11-1820	Used	1) Milwaukee M18 18Volts 48-11-1820 CP 2.0 Ah Red Lithium Battery Genuine
$17.49	$34.98	$11.99	2	36	$0.97	48-11-1820	Used	Milwaukee 48-11-1820 REDLITHIUM M18 18V Battery
$17.50	$34.99	free	2	36	$0.97	48-11-1820	Used	Milwaukee 48-11-1820 M18 18-Volt 2.0 Ah Lithium-Ion Compact Battery (FVS038066)
$17.50	$34.99	$15.00	2	36	$0.97		Used	MILWAUKEE TOOLS M18 RED LITHIUM CP 2.0 (P06038404)
$17.50	$34.99	free	2	36	$0.97	48-11-1820	Used	Milwaukee M18 REDLITHIUM CP2.0 18V Lithium-Ion Battery- Black (48-11-1820)
$17.50	$34.99	free	2	36	$0.97	48-11-1820	Open box	Milwaukee 48-11-1820 -M18 REDLITHIUM 18V Lithium-Ion Battery
$17.50	$34.99	free	2	36	$0.97		Open box	Milwaukee M18 2.0 Ah Battery CP2.0
$17.98	$35.95	free	2	36	$1.00		Used	Milwaukee M18 REDLITHIUM CP2.0 18V Lithium-Ion Battery 2.0Ah
$18.00	$36.00	free	2	36	$1.00	48-11-1820	New	Milwaukee M18 REDLITHIUM CP2.0 Battery 48-11-1820 - New - Pulled From Kit
$18.19	$36.38	$6.99	2	36	$1.01	48-11-1820	Used	Milwaukee M18 CP2.0 18V REDLITHIUM Battery Genuine OEM 48-11-1820
$18.38	$36.76	$9.88	2	36	$1.02	48-11-1820	Used	Milwaukee 48-11-1820 M18 RedLithium 18V 2.0Ah Battery
$18.45	$36.90	$6.95	2	36	$1.02	48-11-1820	Used	Milwaukee 48-11-1820 M18 REDLITHIUM 2.0Ah Compact Battery
$18.50	$36.99	free	2	36	$1.03		Used	Milwaukee M18 Red Lithium CP2.0 AH Battery Pack
$18.92	$75.69	free	2 ×2	72	$1.05	48-11-1820	New	NEW GENUINE Milwaukee Batteries 48-11-1820 CP2.0 M18 Battery 18 Volt - 2 PACK
$18.98	$37.95	free	2	36	$1.05		Used	1) Milwaukee M18 18V CP 2.0 Ah Lithium-Ion Compact Battery Preowned
$18.98	$37.95	free	2	36	$1.05	48-11-1820	Used	Milwaukee 48-11-1820 M18 18-Volt 2.0 Ah Lithium-Ion Compact Battery
$19.00	$37.99	free	2	36	$1.06	48-11-1820	New	Milwaukee 48-11-1820 M18 REDLITHIUM CP2.0 Battery Pack
$19.00	$30.00	+ ship	2	36	$1.06		New	Milwaukee M18 Red Lithium CP 2.0
$19.25	$38.50	free	2	36	$1.07	48-11-1820	New	Milwaukee 48-11-1820 M18 REDLITHIUM CP2.0 Battery
$19.75	$39.49	free	2	36	$1.10	48-11-1820	Open box	Milwaukee 48-11-1820 M18 REDLITHIUM CP2.0 Battery
$19.94	$39.88	free	2	36	$1.11	48-11-1820	Open box	GENUINE Milwaukee M18 OEM Battery CP2.0 2.0 Ah Compact 18V 48-11-1820 BRAND NEW
$19.97	$79.88	free	2 ×2	72	$1.11	48-11-1820	New	(2) New GENUINE In Package Milwaukee Batteries 48-11-1820 2.0 AH M18 18 Volt 18V
$19.98	$39.95	free	2	36	$1.11	48-11-1820	New	Milwaukee 48-11-1820 M18 REDLITHIUM CP2.0 Battery
$19.98	$39.95	free	2	36	$1.11	48-11-1820	New	Milwaukee M18 REDLITHIUM CP2.0 18V 2.0Ah Li-Ion Battery 48-11-1820
$19.98	$39.95	free	2	36	$1.11		New	Milwaukee M18 REDLITHIUM CP2.0 Extended Capacity Battery Pack
$19.98	$39.97	free	2	36	$1.11	48-11-1820	Used	Milwaukee 48-11-1820 M18 Compact Red Lithium 2.0 Cordless Tool Battery
$19.99	$39.98	$9.99	2	36	$1.11		Used	Genuine Milwaukee M18 Red Lithium CP 2.0 Ah Battery Pack
$20.00	$39.99	free	2	36	$1.11	48-11-1820	Used	GENUINE Milwaukee Battery 48-11-1820 2.0 AH M18 18 Volt 18V
$20.00	$39.99	free	2	36	$1.11	48-11-1820	Used	Milwaukee M18 18-Volt 2.0 Ah Lithium-Ion Compact Battery 48-11-1820
$20.00	$39.99	free	2	36	$1.11	48-11-1820	Used	Milwaukee 48-11-1820 18v M18 2.0 Amp Red Lithium Ion Battery Pack Only
$20.00	$39.99	free	2	36	$1.11	48-11-1820	New	GENUINE Milwaukee M18 2.0 AH Battery 48-11-1820 NEW
$20.00	$39.99	free	2	36	$1.11	48-11-1820	New	New REAL GENUINE In Package Milwaukee 48-11-1820 CP2.0 M18 Battery 18 Volt 2.0
$20.00	$79.99	free	2 ×2	72	$1.11		New	Milwaukee M18 REDLITHIUM CP2.0 18V 2.0Ah Compact Battery - Black/Red - 2 PACK
$20.00	$40.00	free	2	36	$1.11	48-11-1820	New	NEW MILWAUKEE SEALED 48-11-1820 CP2.0 M18 Battery 18 Volt 2.0
$20.89	$41.79	free	2	36	$1.16	48-11-1820	New	New REAL GENUINE In Package Milwaukee 48-11-1820 CP2.0 M18 Battery 18 Volt 2.0
$20.90	$41.80	free	2	36	$1.16	48-11-1820	New	Milwaukee M18 Tool Battery 48-11-1820 REDLITHIUM CP2.0 18V+2.0Ah Li-Ion â¡
$20.99	$41.98	$8.99	2	36	$1.17	48-11-1820	Open box	Milwaukee 48-11-1820 M18 18 Volt Lithium-Ion 2.0 Ah Compact Battery
$20.99	$41.98	$6.99	2	36	$1.17	48-11-1815	Open box	Milwaukee M18 REDLITHIUM CP2.0 18V 2.0Ah Li-Ion Battery 48-11-1815 OEM.
$21.00	$41.99	free	2	36	$1.17	48-11-1820	New	Milwaukee 48-11-1820 M18 18 Volt Lithium-Ion 2.0 Ah Compact Battery · 2 available
$21.24	$84.97	free	2 ×2	72	$1.18	48-11-1820	New	(2) New Genuine BARE 18V Milwaukee 48-11-1820 2.0 AH Battery M18 18 Volt Compact
$21.24	$84.97	free	2 ×2	72	$1.18	48-11-1820	New	(2) New GENUINE In Package Milwaukee Batteries 48-11-1820 2.0 AH M18 18 Volt 18V
$21.49	$42.98	$9.99	2	36	$1.19	48-11-1820	Used	Milwaukee M18 REDLITHIUM CP2.0 18V 2.0Ah Li-Ion Battery 48-11-1820
$21.50	$43.00	$4.00	2	36	$1.19	48-11-1820	New	GENUINE Milwaukee M18 OEM Battery CP2.0 2.0 Ah Compact 18V 48-11-1820 BRAND NEW
$21.96	$43.92	free	2	36	$1.22		New	Milwaukee M18 REDLITHIUM CP2.0 18V 2.0Ah Compact Battery - Black/Red
$21.98	$43.97	free	2	36	$1.22	48-11-1820	New	(1) New Genuine 18V Milwaukee 48-11-1820 2.0 AH Battery M18 18 Volt CP Compact
$21.98	$43.97	free	2	36	$1.22	48-11-1820	New	(1) New GENUINE In Package Milwaukee Battery 48-11-1820 2.0 AH M18 18 Volt 18V
$22.24	$88.95	free	2 ×2	72	$1.24		New	Milwaukee M18 REDLITHIUM CP2.0 Compact 18V Lithium-Ion Battery -2.0 Ah (2 Pack)
$22.38	$44.76	free	2	36	$1.24	48-11-1820	New	Milwaukee 48-11-1820 M18 REDLITHIUM CP2.0 Battery 18V Compact Lithium-Ion
$22.48	$44.95	$9.95	2	36	$1.25		Open box	New Milwaukee M18 RedLithium CP2.0 18V 2.0Ah Lithium-Ion Bat
$22.50	$44.99	free	2	36	$1.25	48-11-1820	Open box	CERTIFIED WARRANTY Milwaukee 48-11-1820 M18 18 Volt Lithium-Ion 2.0 Ah Battery
$22.50	$45.00	$10.00	2	36	$1.25		Used	Milwaukee M18 CP 2.0Ah Battery
$22.50	$45.00	free	2	36	$1.25	48-11-1820	Open box	Milwaukee M18 REDLITHIUM CP2.0 18V 2.0Ah Li-Ion Battery Pack 48-11-1820
$22.50	$45.00	$5.00	2	36	$1.25	48-11-1820	Open box	Milwaukee M18 18V 2.0Ah REDLITHIUM Compact Lithium-Ion Battery 48-11-1820 OEM
$22.50	$45.00	free	2	36	$1.25	48-11-1820	Open box	Milwaukee M18 18-Volt 2.0 Ah Lithium-Ion Compact Battery 48-11-1820
$23.00	$38.00	+ ship	2	36	$1.28		Used	Milwaukee M18 REDLITHIUM CP2.0 Battery Pack 18V 2.0Ah 36Wh - Used
$23.00	$38.00	+ ship	2	36	$1.28	48-11-1820	New	New REAL GENUINE In Package Milwaukee 48-11-1820 CP2.0 M18 Battery 18 Volt 2.0
$24.43	$48.87	free	2	36	$1.36	48-11-1820	New	Milwaukee 48-11-1820 M18 REDLITHIUM 2.0 AH Battery Pack 18V Lithium-Ion
$24.50	$49.00	free	2	36	$1.36	48-11-1820	New	Milwaukee 48-11-1820 M18 REDLITHIUM CP2.0 Battery NEW
$25.00	$49.99	$20.00	2	36	$1.39		Used	MILWAUKEE TOOLS M18 RED LITHIUM CP 2.0 PRE-OWNED (P23018729)
$25.00	$49.99	$9.99	2	36	$1.39	48-11-1820	New	Milwaukee Genuine OEM 48-11-1820 18V 18-Volt M18 Red Lithium 2.0 Tool Battery
$25.00	$50.00	free	2	36	$1.39	48-11-1820	New	Milwaukee 48-11-1820 M18 18-Volt 2.0 Ah Lithium-Ion Compact Battery · 2 available
$25.06	$50.12	free	2	36	$1.39	48-11-1820	New	Milwaukee 48-11-1820 M18 18v REDLITHIUM 2.0 Compact Battery Pack
$26.00	$44.00	+ ship	2	36	$1.44	48-11-1820	New	Milwaukee M18 REDLITHIUM 18V Lithium-Ion Battery - Black (48-11-1820) 1 battery
$27.32	$54.65	free	2	36	$1.52	48-11-1820	New	Milwaukee 48-11-1820 M18 18v REDLITHIUM 2.0 Compact 1 Count (Pack of 1), Red · 2 available
$27.54	$55.08	$6.08	2	36	$1.53		New	Milwaukee M18 Red Lithium CP2.0 Battery
$27.77	$55.55	free	2	36	$1.54	48-11-1820	New	New Milwaukee M18 REDLITHIUM 18V Lithium-Ion Battery (48-11-1820)
$28.00	$55.99	$9.99	2	36	$1.56		Used	Milwaukee Tools M18 Red Lithium CP2.0 18V 2.0Ah Battery (P03071406)
$28.00	$56.00	$6.00	2	36	$1.56	48-11-1820	New	Milwaukee 48-11-1820 M18 Redlithium CP2.0 Compact Battery
$28.50	$57.00	$7.00	2	36	$1.58	48-11-1820	New	Milwaukee 48-11-1820 M18 REDLITHIUM 2.0 Compact Battery Pack NIB
$28.50	$57.00	$12.00	2	36	$1.58	48-11-1820	New	NIB Milwaukee 48-11-1820 M18 18V 18 Volt 2.0Ah Red Lithium Ion Battery
$29.75	$59.49	free	2	36	$1.65	48-11-1820	New	(1) New Genuine 18V Milwaukee 48-11-1820 2.0 AH Battery M18 18 Volt CP Compact
$29.77	$59.54	$6.96	2	36	$1.65	48-11-1820	New	NEW Milwaukee 48-11-1820 M18 REDLITHIUM CP2.0 Battery - FAST SHIPPING
$30.00	$59.99	free	2	36	$1.67	48-11-1820	New	Milwaukee 48-11-1820 M18 REDLITHIUM CP 2-Ah Li-Ion Battery 18V
$30.00	$60.00	free	2	36	$1.67	48-11-1820	New	Milwaukee M18 REDLITHIUM CP2.0 18V 2Ah Li-Ion Battery 48-11-1820
$30.00	$60.00	free	2	36	$1.67	48-11-1820	New	Milwaukee 48-59-1812 M12 & M18 Multi-Voltage Battery 2.0aH 48-11-1820 NEW
$31.32	$62.65	free	2	36	$1.74	48-11-1820	New	Milwaukee M18 REDLITHIUM 18V Lithium-Ion 2Ah Battery Pack 48-11-1820, Brand New
$33.95	$67.90	$9.95	2	36	$1.89		New	(1) New GENUINE Milwaukee Battery 48-11-18-1820 CP 2.0 AH Compact M18 Volt 18V
$34.98	$69.95	free	2	36	$1.94	48-11-1820	New	Milwaukee 48-11-1820 M18 REDLITHIUM CP 2 Ah Li-Ion Battery New
$42.50	$85.00	free	2	36	$2.36		New	Milwaukee M18 CP 2.0 18V Lithium-Ion Battery

Showing 98 of 98 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.