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Milwaukee 18V 5.0Ah Red Lithium-Ion Battery M18B5
Milwaukee 18V 5.0Ah Red Lithium-Ion Battery M18B5
Milwaukee 18V 5.0Ah Red Lithium-Ion Battery M18B5
Milwaukee 18V 5.0Ah Red Lithium-Ion Battery M18B5
Milwaukee 18V 5.0Ah Red Lithium-Ion Battery M18B5
Milwaukee 18V 5.0Ah Red Lithium-Ion Battery M18B5
Milwaukee 18V 5.0Ah Red Lithium-Ion Battery M18B5
Milwaukee 18V 5.0Ah Red Lithium-Ion Battery M18B5
Milwaukee 18V 5.0Ah Red Lithium-Ion Battery M18B5
Milwaukee 18V 5.0Ah Red Lithium-Ion Battery M18B5
Milwaukee 18V 5.0Ah Red Lithium-Ion Battery M18B5
Milwaukee 18V 5.0Ah Red Lithium-Ion Battery M18B5
Milwaukee 18V 5.0Ah Red Lithium-Ion Battery M18B5
Milwaukee 18V 5.0Ah Red Lithium-Ion Battery M18B5
Milwaukee 18V 5.0Ah Red Lithium-Ion Battery M18B5

Milwaukee 18V 5.0Ah Red Lithium-Ion Battery M18B5

$84.99

(687 reviews)

Delivers up to 2.5X more run-time, 20% more power & 2X more life than standard lithium-ion batteries. Features superior pack construction, electronics & performance to deliver more work per charge & more work over the life of the pack. Advanced design, protects the pack against harsh jobsite environments.

Delivers up to 2.5X more run-time, 20% more power & 2X more life than standard lithium-ion batteries. Features superior pack construction, electronics & performance to deliver more work per charge & more work over the life of the pack. Advanced design, protects the pack against harsh jobsite environments.

Milwaukee 18V 5.0Ah Red Lithium-Ion Battery M18B5

(687 reviews)

Delivers up to 2.5X more run-time, 20% more power & 2X more life than standard lithium-ion batteries. Features superior pack construction, electronics & performance to deliver more work per charge & more work over the life of the pack. Advanced design, protects the pack against harsh jobsite environments.

Delivers up to 2.5X more run-time, 20% more power & 2X more life than standard lithium-ion batteries. Features superior pack construction, electronics & performance to deliver more work per charge & more work over the life of the pack. Advanced design, protects the pack against harsh jobsite environments.

$84.99 - $975.00

in 34 offers

The lowest price for Milwaukee 18V 5.0Ah Red Lithium-Ion Battery M18B5 right now is $84.99 at AliExpress.com - AliExpress-226247430, compared across 24 retailers.

The all-time low was $19.99 on 6 June 2026 — today's price is 325% above the lowest ever. It has been notably cheaper before — worth setting a price alert.

Prices last updated 8 June 2026.

Price comparison

Price data powered by pricesAPI.io

Last updated at 08/06/2026 13:16:24

Please note: price history and price alerts are not available for some stores, including Amazon.com.au.
Amazon.com.au

$145.00

Milwaukee M18B5 18V 5.0Ah Li-Ion RED LITHIUM Battery

Free delivery

Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!

AliExpress.com - AliExpress-226247430

$84.99

Milwaukee battery M18,5.0AH,6.0Ah,Original Milwaukee charger,M18B6 M18B5 48-11-1860, 48-11-1850,

Delivery $17.88

Kavadar Tools

$109.00

Milwaukee 5ah Battery (18v)

National Power Tools

$134.95

Brand New Genuine Milwaukee M18 5.0AH Battery M18B5

National Power Tools

$259.95

Brand New Genuine Milwaukee M18 5.0AH Batteries X 2 M18B5

National Power Tools

$349.95

New Genuine Milwaukee M18 5.0AH Batteries, Charger and Bag M18B5

Cashaway

$139.00

Milwaukee M18 18V RedLithium-Ion 5.0Ah Extended Capacity Battery Pack M18B5

Free delivery between 15–19 June

Cashaway

$139.00

Milwaukee M18 18V RedLithium-Ion 5.0Ah Extended Capacity Battery Pack M18B5

Free delivery between 15–19 June

aktools.com.au

$139.00

Milwaukee 5Ah Battery 18V REDLITHIUM-ION M18B5 Genuine Battery OEM Original

Free delivery between 11–15 June

aktools.com.au

$145.00

Milwaukee 18V Battery 5.0Ah REDLITHIUM-ION M18B5 Genuine OEM Original

Free delivery between 11–15 June

Price history

Price history

Please note: price history and price alerts are not available for some stores, including Amazon.com.au.

Reviews

30 October 2022Rockywins

originally posted on ffx.co.uk

Item came i then put new battery on charge. When used it only last 5 mins so its absolute rubbish. Went on live chat to get it sorted but chat ended all of sudden and then wouldn't work. So haven't been able to use it. Waste of time and money

2x M18 Milwaukee batteries
14 September 2021vikamarine

originally posted on ebay.com

So far I can't say anything yet as i didn't use them enough to tell you or compare between the genuine one and theese batteries how they perform on serious job. From my opinion considering the fact about the difference in the price well there is no equivalent on that so honestly you get for what you paid. The batteries they come with some charge on them, so I've done with my wrench couple of vans all 4 wheels off and then put back. The battery came from 4 in total lanes it was with 3 when i start and finish same with 3 on the scale. It keep the charge definitely enough long. However I've noticed when i first put them on charge they indicated from original charger as charged just after 10 min as is full which I can't say really if that is good or no. Anyway the ... MoreSo far I can't say anything yet as i didn't use them enough to tell you or compare between the genuine one and theese batteries how they perform on serious job. From my opinion considering the fact about the difference in the price well there is no equivalent on that so honestly you get for what you paid. The batteries they come with some charge on them, so I've done with my wrench couple of vans all 4 wheels off and then put back. The battery came from 4 in total lanes it was with 3 when i start and finish same with 3 on the scale. It keep the charge definitely enough long. However I've noticed when i first put them on charge they indicated from original charger as charged just after 10 min as is full which I can't say really if that is good or no. Anyway the battery wasn't flat, but anyway so far I'm happy about,also there is no change on the power of your tool no matter what you using. I've tried them on a drill and M18 Milwaukee wrench. Very well build and good quality . Indicators the button is same as original one. So far no issues and definitely feel in confident and could order in future again. Thank you

A good deal.
22 September 2021gavin3573

originally posted on ebay.com

I cannot rate the product as you didnt have any and sent me 2.5AH instead. Granted you gave me an extra one for the inconvenience which is handy. It cost me more for one original battery a week earlier. All in all a great deal

Specification

Product dimensions22 x 12 x 22 cm; 720 Grams
Batteries1 Lithium Ion batteries required. (included)
Is Discontinued By ManufacturerNo
Power SourceBattery Powered
Voltage18 Volts

Price comparison

Updated 1 day ago
Please note: price history and price alerts are not available for some stores, including Amazon.com.au.
Amazon.com.au

$145.00

Milwaukee M18B5 18V 5.0Ah Li-Ion RED LITHIUM Battery

Free delivery

Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!

AliExpress.com - AliExpress-226247430

$84.99

Milwaukee battery M18,5.0AH,6.0Ah,Original Milwaukee charger,M18B6 M18B5 48-11-1860, 48-11-1850,

Delivery $17.88

Kavadar Tools

$109.00

Milwaukee 5ah Battery (18v)

National Power Tools

$134.95

Brand New Genuine Milwaukee M18 5.0AH Battery M18B5

National Power Tools

$259.95

Brand New Genuine Milwaukee M18 5.0AH Batteries X 2 M18B5

Price history

Price history

Please note: price history and price alerts are not available for some stores, including Amazon.com.au.

Reviews

30 October 2022

Item came i then put new battery on charge. When used it only last 5 mins so its absolute rubbish. Went on live chat to get it sorted but chat ended all of sudden and then wouldn't work. So haven't been able to use it. Waste of time and money

Rockywins originally posted on ffx.co.uk
2x M18 Milwaukee batteries
14 September 2021

So far I can't say anything yet as i didn't use them enough to tell you or compare between the genuine one and theese batteries how they perform on serious job. From my opinion considering the fact about the difference in the price well there is no equivalent on that so honestly you get for what you paid. The batteries they come with some charge on them, so I've done with my wrench couple of vans all 4 wheels off and then put back. The battery came from 4 in total lanes it was with 3 when i start and finish same with 3 on the scale. It keep the charge definitely enough long. However I've noticed when i first put them on charge they indicated from original charger as charged just after 10 min as is full which I can't say really if that is good or no. Anyway the ... MoreSo far I can't say anything yet as i didn't use them enough to tell you or compare between the genuine one and theese batteries how they perform on serious job. From my opinion considering the fact about the difference in the price well there is no equivalent on that so honestly you get for what you paid. The batteries they come with some charge on them, so I've done with my wrench couple of vans all 4 wheels off and then put back. The battery came from 4 in total lanes it was with 3 when i start and finish same with 3 on the scale. It keep the charge definitely enough long. However I've noticed when i first put them on charge they indicated from original charger as charged just after 10 min as is full which I can't say really if that is good or no. Anyway the battery wasn't flat, but anyway so far I'm happy about,also there is no change on the power of your tool no matter what you using. I've tried them on a drill and M18 Milwaukee wrench. Very well build and good quality . Indicators the button is same as original one. So far no issues and definitely feel in confident and could order in future again. Thank you

vikamarine originally posted on ebay.com
A good deal.
22 September 2021

I cannot rate the product as you didnt have any and sent me 2.5AH instead. Granted you gave me an extra one for the inconvenience which is handy. It cost me more for one original battery a week earlier. All in all a great deal

gavin3573 originally posted on ebay.com
Decent.
24 May 2022

Hard to tell if it actually is a 5ah battery but it works as it should and is a good price compared to the actual milwaukee brand as 2 of these batteries is cheaper than 1 milwaukee. Been using them for a week and they hold a good charge so far. Will wait to see if they stand the test of time but definitely seem good value for money and i am pleased with the purchase. Would recommend.

maidstonejunglist originally posted on ebay.com
Headache
3 August 2019

I Winn 3 is this batterys and they were like new. One has a little use. After 7 month they all went out. My suggestion. Buy the original even is they look like a truck ran over it. They will last very long. I bought some, very bad looking out side. Scratch, writing on it, full of dust and still good after 3 years of use.

wilfredovilanova originally posted on ebay.com
Junk junk
26 November 2019

Hi everyone if you want to waste your money buy this. I bought 3 of them within 1,5 month. 1st one melted down under load in my hand 2nd one I catch it earlier started to smoke. 3 one just doesn't hold any capacity I bought 6ah and my another 2ah last longer. If you want to waste you money buy it. Otherwise consider to buy genuine one it's worth the money.

echel-15 originally posted on ebay.com
Not 6.0AH BUT NOT BAD
21 October 2021

Tested batteries using my fan . They last both lasted Battery 1- 5:12:31 hours Battery 2- 5:21:11 hours I'd say these batteries are more 3.5AH (For 18 quid each isn't bad at all) I have a genuine 5.0AH that lasts 7:30 + hours . (the genuine 1 is 3 years old) For the price you really can't complain although one battery rattles. They feel decent quality. Fit drill and fan better than original actually. NOT BAD

dannyb4me_2 originally posted on ebay.com
Not as expected. Small, light ... but they do work...
23 September 2022

Not as expected. These batteries are the size of a "real" Milwaukee XC 5.0 AH battery. And slightly lighter. They do work - but do not last as long as expected especially compared to the "real" Milwaukee 8.0 I have. Unless one is okay with interior 5.0 batteries under the guise of an 8.0 battery ... I would say these are not advertised properly.

alaal-lo-vplfia originally posted on ebay.com
Poor quality. Poor perfeoamancd.
26 March 2023

Charge indicator not working. Capacity significantly lower than a genuine 4ah. Poor quality, poor performance. Fast shipping.

mwtssales originally posted on ebay.com
Save your money
16 January 2022

We did not expect these batteries to be perfect but we did expect them to last longer than they did.The batteries did not last an hour before they were empty. On the second charge one battery is dead and won't charge at all. Save your money.

andyandkez0135 originally posted on ebay.com

Specification

Product dimensions22 x 12 x 22 cm; 720 Grams
Batteries1 Lithium Ion batteries required. (included)
Is Discontinued By ManufacturerNo
Power SourceBattery Powered
Voltage18 Volts

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