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Milwaukee M18 5Ah battery prices

Every genuine Milwaukee M18 5Ah 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$9.20

Cheapest used, per Ah$6.60

Cheapest single battery$25.00

$/Ah	Price	Shipping	Ah	Wh	$/Wh	Part	Condition	Listing
$6.60	$25.00	+ ship	5	90	$0.37	48-11-1850	Used	Milwaukee M18 REDLITHIUM XC5.0 18V 5.0Ah Li-Ion Battery Pack 48-11-1850High output
$7.60	$37.99	free	5	90	$0.42	48-11-1850	Used	Milwaukee 48-11-1850 M18 18V Red Lithium XC 5.0 M18High output
$7.80	$38.99	$9.99	5	90	$0.43	48-11-1850	Used	One Milwaukee M18 48-11-1850 18V 5.0Ah XC5.0 Li-ion Battery 1 battery each orderHigh output
$7.80	$38.99	$4.99	5	90	$0.43	48-11-1850	Used	Milwaukee M18 REDLITHIUM XC5.0 Lithium-Ion Battery 18V 48-11-1850 OEMHigh output
$8.00	$39.98	free	5	90	$0.44	48-11-1850	Used	Milwaukee 48-11-1850 M18 RedLithium XC 5.0 Power Tool Battery - Free ShippingHigh output
$8.00	$39.99	free	5	90	$0.44	48-11-1850	Used	Milwaukee 48-11-1850 M18 18V Red Lithium XC 5.0High output
$8.00	$39.99	free	5	90	$0.44	48-11-1850	Used	Milwaukee M18 18V RED LITHIUM 5.0 Extended Capacity Battery - 48-11-1850 TESTED
$8.00	$39.99	$5.00	5	90	$0.44		Used	Milwaukee M18 Red Lithium XC 5.0 Tool Battery (WMP021499)High output
$8.00	$40.00	free	5	90	$0.44		Used	Milwaukee M18 REDLITHIUM XC 5.0 18V Li-Ion Battery Pack 5Ah BlackHigh output
$8.20	$40.99	free	5	90	$0.46	48-11-1850	Used	Milwaukee M18 Lithium-Ion Battery 5.0AH 48-11-1850
$8.39	$41.95	$5.95	5	90	$0.47	48-11-1850	Used	Milwaukee 48-11-1850 M18 18V Battery Only OEM Red Lithium XC 5.0High output
$8.40	$41.99	$11.99	5	90	$0.47		Used	Milwaukee M18 REDLITHIUM XC5.0 18V 5Ah Li-Ion Battery Pack, BlackHigh output
$8.54	$42.70	free	5	90	$0.47	48-11-1850	Used	Milwaukee 48-11-1850 M18 XC5.0 REDLITHIUM Extended Capacity BatteryHigh output
$8.55	$42.74	free	5	90	$0.47		Used	Milwaukee M18 REDLITHIUM XC5.0 Extended Capacity Battery Pack - Black...High output
$8.60	$43.00	free	5	90	$0.48		Used	Milwaukee M18 REDLITHIUM XC5.0 Extended Capacity Battery Pack - Black...High output · 2 available
$8.80	$43.99	free	5	90	$0.49	48-11-1850	Used	Milwaukee 48-11-1850 M18 18V Battery
$8.92	$44.60	free	5	90	$0.50	48-11-1850	Used	Milwaukee 48-11-1850 M18 Redlithium XC 5.0 Extended Capacity Battery PackHigh output
$8.93	$44.65	$5.95	5	90	$0.50	48-11-1850	Used	Milwaukee M18 REDLITHIUM XC5.0 Extended Capacity Battery Pack 48-11-1850 TESTED!High output
$8.98	$44.90	$8.80	5	90	$0.50	48-11-1850	Used	G) Milwaukee Tools 48-11-1850 M18 Redlithium XC5.0 18V 5.0Ah Battery PackHigh output
$8.99	$44.97	free	5	90	$0.50	48-11-1850	Used	Milwaukee 48-11-1850 M18™ XC5.0 Extended Capacity Battery Pack USEDHigh output
$9.00	$44.99	free	5	90	$0.50	48-11-1850	Used	Milwaukee 48-11-1850 Redlithium M18 5.0 AH Battery Pack
$9.00	$44.99	$10.00	5	90	$0.50	48-11-1850	Used	Milwaukee 48-11-1850 M18 XC5.0 REDLITHIUM Extended Capacity BatteryHigh output
$9.00	$45.00	free	5	90	$0.50		Used	MILWAUKEE TOOLS M18 RED LITHIUM XC 5.0 BATTERY (B33003033)High output
$9.13	$45.65	$5.68	5	90	$0.51		Used	Milwaukee M18 REDLITHIUM XC5.0 BatteryHigh output
$9.20	$45.98	$10.99	5	90	$0.51		Used	Milwaukee M18 REDLITHIUM XC5.0 18V 5.0Ah Lithium-Ion BatteryHigh output
$9.20	$91.98	free	5 ×2	180	$0.51	48-11-1850	New	Milwaukee 48-11-1850 M18 XC 5.0 AH 18 Volt Capacity Battery 2 PACK 48-11-1852High output
$9.20	$91.99	free	5 ×2	180	$0.51	48-11-1850	New	2 PCS Milwaukee 48-11-1850 M18 XC 5.0 AH 18 Volt Capacity Battery New In 2PCHigh output
$9.20	$46.00	free	5	90	$0.51	48-11-1850	Used	Milwaukee M18 XC5.0 18V 5.0Ah Li-Ion Battery 48-11-1850High output
$9.30	$92.99	free	5 ×2	180	$0.52	48-11-1850	New	2 PCS Milwaukee 48-11-1850 M18 XC 5.0 AH 18 Volt Capacity Battery New In PackHigh output
$9.40	$46.98	$11.99	5	90	$0.52		Used	Milwaukee M18 RED LITHIUM XC 5.0 Battery Pack 18V 5.0Ah 90Wh MXHigh output
$9.40	$46.99	free	5	90	$0.52	48-11-1850	Used	Milwaukee 48-11-1850 M18 Redlithium 5.0Ah High Capacity Battery Pack.
$9.60	$47.99	$8.00	5	90	$0.53	48-11-1850	Used	Milwaukee M18 REDLITHIUM XC 5.0 18V 5.0Ah Li-Ion Battery 48-11-1850High output
$9.60	$47.99	free	5	90	$0.53		Used	Milwaukee M18 18-Volt 5.0 Ah Lithium-Ion XC Extended Capacity Battery Pack
$9.60	$47.99	free	5	90	$0.53	48-11-1850	Used	Milwaukee M18 REDLITHIUM XC 5.0 Battery Pack (Model 48-11-1850) 18V Lithium-IonHigh output
$9.80	$48.99	free	5	90	$0.54	48-11-1850	Used	Milwaukee M18 18V 5Ah XC Extended Capacity Battery Pack 48-11-1850 Q479X20 OEM
$9.80	$48.99	free	5	90	$0.54	48-11-1850	Used	GENUINE 18V Milwaukee 48-11-1850 5.0 AH Battery M18 18 Volt XC 5.0 RedHigh output
$9.80	$89.98	+ ship	5 ×2	180	$0.54	48-11-1850	Used	Milwaukee M18 48-11-1850 Extended Capacity Batteries - Black (Pack of 2)
$9.99	$49.94	$7.95	5	90	$0.55	48-11-1850	Used	Milwaukee 48-11-1850 M18 18V 5.0 Ah Battery PACK Single Battery - FAST SHIPPING
$9.99	$49.95	free	5	90	$0.56	48-11-1850	Used	Milwaukee 48-11-1850 M18 RedLithium XC5.0 5Ah Battery Pack (E10047295)High output · 4 available
$9.99	$49.97	free	5	90	$0.56	48-11-1850	Used	Milwaukee 48-11-1850 M18™ XC5.0 Extended Capacity Battery Pack USEDHigh output
$10.00	$49.99	free	5	90	$0.56		Used	Milwaukee M18 18-Volt 5.0 Ah Lithium-Ion XC Extended Capacity Battery Pack
$10.00	$49.99	$10.00	5	90	$0.56	48-11-1850	Used	GENUINE Milwaukee M18 5.0 Ah XC Battery 48-11-1850
$10.00	$49.99	free	5	90	$0.56		Used	Milwaukee M18 REDLITHIUM XC 5.0 18V 5.0Ah Lithium-Ion Power Tool Battery TESTEDHigh output
$10.00	$49.99	free	5	90	$0.56	48-11-1850	Used	GENUINE 18V Milwaukee 48-11-1850 5.0 AH Battery M18 18 Volt XC 5.0 RedHigh output
$11.00	$54.99	free	5	90	$0.61		New	Genuine Milwaukee M18 XC5.0 Resistant Battery (48-11-1850R)High output
$11.00	$54.99	free	5	90	$0.61		New	Milwaukee M18 REDLITHIUM XC5.0 Extended Capacity Battery Pack - Black...High output
$11.00	$55.00	free	5	90	$0.61	48-11-1850	New	NEW GENUINE Milwaukee M18 XC5.0 Extended Capacity Battery 48-11-1850 OEMHigh output
$11.58	$57.91	free	5	90	$0.64	48-11-1850	Open box	Milwaukee 48-11-1850 M18 Redlithium 5.0Ah High Capacity Battery Pack.
$11.78	$58.91	free	5	90	$0.65	48-11-1850	Open box	Milwaukee 48-11-1850 M18 Redlithium 5.0Ah High Capacity Battery Pack
$11.80	$58.98	$9.99	5	90	$0.66	48-11-1850	Open box	Milwaukee 48-11-1850 Battery M18 18V 18 Volt XC 5.0 Ah Red Lithium IonHigh output
$11.80	$58.99	$9.00	5	90	$0.66		Open box	Milwaukee M18 18V 5.0Ah XC REDLITHIUM Lithium-Ion Extended Capacity Battery OEM
$11.80	$59.00	free	5	90	$0.66	48-11-1850	New	Milwaukee 48-11-1850 M18 REDLITHIUM XC5.0 18V 5.0Ah Battery Pack GenuineHigh output
$12.00	$59.99	free	5	90	$0.67		New	Milwaukee M18 Red Lithium XC 5.0 BatteryHigh output
$12.00	$59.99	free	5	90	$0.67	48-11-1850	New	Milwaukee 48-11-1850 M18 REDLITHIUM XC 5.0Ah 18V Battery Genuine New BareHigh output · 2 available
$12.00	$59.99	free	5	90	$0.67	48-11-1850	New	Milwaukee 48-11-1850 M18 REDLITHIUM XC5.0 18V 5.0Ah Battery Pack Genuine SealedHigh output
$12.13	$60.65	$5.70	5	90	$0.67	48-11-1850	New	New Milwaukee 48-11-1850 M18 18V Red Lithium XC 5.0 M18 NO BOXHigh output
$12.16	$60.79	free	5	90	$0.68		New	Milwaukee M18 REDLITHIUM XC 5.0 Extended Capacity Battery Pack OG PackgHigh output
$12.30	$61.50	free	5	90	$0.68		New	Milwaukee M18 18-Volt 5.0 Ah Lithium-Ion XC Extended Capacity Battery Pack 1
$12.40	$61.98	$3.99	5	90	$0.69		New	Milwaukee M18 REDLITHIUM XC5.0 Extended Capacity Battery Pack Brand New 5.0 AhHigh output
$12.60	$62.99	free	5	90	$0.70		New	Milwaukee 48-11-1850R M18 REDLITHIUM XC5.0 Resistant BatteryHigh output
$12.60	$62.99	free	5	90	$0.70	48-11-1850	Open box	Milwaukee 48-11-1850 M18 Red Lithium XC5.0 Extended Capacity Battery 18V, 5AhHigh output
$12.70	$63.48	$10.49	5	90	$0.71	48-11-1850	New	Milwaukee M18 REDLITHIUM XC5.0 18V 5Ah Li-Ion Battery Pack 48-11-1850High output
$12.79	$63.95	free	5	90	$0.71	48-11-1850	New	(1) GENUINE 18V Milwaukee 48-11-1850 5.0 AH Battery M18 18 Volt XC 5.0 RedHigh output
$12.80	$64.00	free	5	90	$0.71	48-11-1850	New	Milwaukee 48-11-1850 M18 Redlithium XC 5.0 Battery Fits M18 Tools - Brand NewHigh output
$12.80	$64.00	free	5	90	$0.71	48-11-1850	New	Milwaukee M18 RedLithium XC5.0 5.0Ah Battery, Black/Red (48-11-1850)High output
$12.80	$64.00	$9.00	5	90	$0.71	48-11-1850	Open box	Milwaukee M18 XC5.0 Ah 5.0Ah RedLithium Battery Pack 48-11-1850 Genuine OEMHigh output
$12.90	$64.50	free	5	90	$0.72		New	Milwaukee M18 REDLITHIUM XC5.0 Extended Capacity Battery Pack - BlackHigh output
$12.99	$64.94	$9.99	5	90	$0.72	48-11-1850	New	Milwaukee 48-11-1850 M18™ XC5.0 Extended Capacity Battery PackHigh output
$12.99	$64.95	free	5	90	$0.72	48-11-1850	New	Milwaukee 48-11-1850 M18 REDLITHIUM XC5.0 18V 5.0Ah Battery PackHigh output
$12.99	$64.95	free	5	90	$0.72	48-11-1850	New	Milwaukee 48-11-1850 M18™ XC5.0 Extended Capacity Battery PackHigh output
$12.99	$64.95	free	5	90	$0.72	48-11-1850	New	Milwaukee 48-11-1850 M18 XC 5.0 AH 18 Volt Capacity Battery FREE SHIPPING A2High output
$13.00	$64.99	free	5	90	$0.72	48-11-1850	New	Genuine Milwaukee M18 REDLITHIUM XC5.0 Extended Capacity Battery PK- 48-11-1850High output
$13.00	$64.99	$5.00	5	90	$0.72		New	Milwaukee M18 REDLITHIUM XC5.0 Extended Capacity Battery Pack - Black...High output · 2 available
$13.00	$64.99	free	5	90	$0.72	48-11-1850	New	GENUINE Milwaukee M18 5.0 Ah XC Red Lithium Battery 48-11-1850 NEW
$13.00	$64.99	free	5	90	$0.72	48-11-1850	New	Milwaukee 48-11-1850 M18 XC 5.0 AH 18 Volt Capacity Battery PackHigh output
$13.00	$64.99	free	5	90	$0.72	48-11-1850	Open box	Genuine Milwaukee M18 REDLITHIUM XC5.0 18V 5Ah Battery 48-11-1850High output
$13.00	$64.99	free	5	90	$0.72		Open box	Milwaukee M18 REDLITHIUM XC5.0 18V 5.0Ah Li-Ion Battery 48-11-1850RHigh output
$13.00	$65.00	free	5	90	$0.72	48-11-1850	New	Milwaukee 48-11-1850 M18™ XC5.0 Extended Capacity Battery PackHigh output
$13.00	$65.00	free	5	90	$0.72		New	Milwaukee M18 Redlithium XC5.0 BatteryHigh output
$13.13	$65.67	$5.68	5	90	$0.73	48-11-1850	New	Milwaukee M18 REDLITHIUM XC5.0 Extended Capacity Battery Pack - 48-11-1850High output
$13.20	$65.99	free	5	90	$0.73	48-11-1850	Open box	Milwaukee 48-11-1850 (1) M18 Redlithium 5.0Ah High Capacity Battery Pack
$13.38	$66.90	$9.00	5	90	$0.74		New	New Milwaukee 48-11-1850R M18 Red Lithium XC 5.0 M18High output
$13.39	$66.95	$7.95	5	90	$0.74		Open box	Milwaukee M18 RedLithium XC5.0 5Ah Battery (48-11-1850R)High output
$13.39	$66.97	free	5	90	$0.74	48-11-1850	New	(1) GENUINE 18V Milwaukee BARE 48-11-1850 5.0 AH Battery M18 18 Volt XC Red
$13.40	$66.99	free	5	90	$0.74		New	New Milwaukee M18 18V 5.0 Ah Lithium-Ion XC Extended Capacity Battery Pack
$13.40	$66.99	free	5	90	$0.74	48-11-1850	New	New Milwaukee 48-11-1850 M18 18V Red Lithium XC 5.0 M18High output
$13.40	$66.99	free	5	90	$0.74		Open box	Milwaukee M18 RED LITHIUM XC5.0 Battery - Black (48-11-1850R)High output
$13.42	$67.12	free	5	90	$0.75	48-11-1850	Open box	New Milwaukee 48-11-1850 M18 Red Lithium XC 5.0 Ah Lithium Ion Battery GenuineHigh output
$13.55	$67.76	$8.26	5	90	$0.75	48-11-1850	New	Milwaukee 48-11-1850 M18 XC5.0 REDLITHIUM Extended Capacity BatteryHigh output
$13.59	$67.95	free	5	90	$0.76		New	Milwaukee 48-11-1850R M18 REDLITHIUM XC5.0 Resistant BatteryHigh output
$13.60	$67.98	$2.99	5	90	$0.76	48-11-1850	New	Genuine Milwaukee 48-11-1850 M18 XC5.0 Extended Capacity Battery PackHigh output
$13.60	$59.99	+ ship	5	90	$0.76		New	Milwaukee 48-11-1850R M18 REDLITHIUM XC5.0 Resistant BatteryHigh output
$13.60	$59.99	+ ship	5	90	$0.76		New	Milwaukee M18 REDLITHIUM XC5.0 Extended Capacity Battery Pack - Black...High output
$13.60	$67.99	free	5	90	$0.76	48-11-1850	New	GENUINE Milwaukee M18 5.0 Ah XC Battery 48-11-1850 NEW
$13.60	$67.99	free	5	90	$0.76	48-11-1850	New	Milwaukee 48-11-1850 M18 XC 5.0 AH 18 Volt Capacity Battery FREE SHIPPING High output
$13.60	$60.00	+ ship	5	90	$0.76		New	Milwaukee M18 RedLithium XC 5.0 BatteryHigh output
$15.00	$74.99	free	5	90	$0.83		Open box	Milwaukee M18 18-Volt 5.0 Ah Lithium-Ion XC Extended Capacity Battery Pack · 2 available
$15.00	$75.00	free	5	90	$0.83		Open box	Milwaukee M18 REDLITHIUM XC5.0 Extended Capacity Battery Pack - NEVER USED!!!!!High output
$15.60	$70.00	+ ship	5	90	$0.87	48-11-1850	Open box	Milwaukee 48-11-1850 M18 XC 5.0 AH 18 Volt Capacity Battery High output
$16.00	$80.00	$15.00	5	90	$0.89		Open box	Milwaukee M18 REDLITHIUM XC5.0 Extended Capacity Battery Pack - NEVER USED!!!!!High output · 3 available
$16.60	$75.00	+ ship	5	90	$0.92		Open box	Milwaukee M18 REDLITHIUM XC5.0 18V 5.0Ah Li-Ion Battery PackHigh output
$16.90	$84.50	free	5	90	$0.94	48-11-1850	Open box	Milwaukee 48-11-1850 18V Li-Ion M18 Battery 5Ah Extended Capacity
$18.60	$84.99	+ ship	5	90	$1.03	48-11-1850	Open box	Milwaukee M18 RedLithium XC5.0 18V 5.0Ah Li-Ion Battery 48-11-1850High output

Showing 103 of 103 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.