Milwaukee M18b4 18V 4.0Ah Li-ion Red Lithium Battery (Pre-Owned)
The Milwaukee 18V 4.0Ah M18 Red Lithium Ion Battery M18B4 id ideal for any professional or DIYer who has Milwaukee Red 18V power tools. It has clever overload protection that helps to prevent battery abuse and and individual cell monitoring system to ensure the optimum charge and discharge is provided to also increased the battery life. To maintain the ideal temperature and to prevent overheating this battery has an intelligent temperature management system. This is supplied as a single battery. This battery is compatible with all M18 Milwaukee power tools and provides 20% more power than precessors.
The Milwaukee 18V 4.0Ah M18 Red Lithium Ion Battery M18B4 id ideal for any professional or DIYer who has Milwaukee Red 18V power tools. It has clever overload protection that helps to prevent battery abuse and and individual cell monitoring system to ensure the optimum charge and discharge is provided to also increased the battery life. To maintain the ideal temperature and to prevent overheating this battery has an intelligent temperature management system. This is supplied as a single battery. This battery is compatible with all M18 Milwaukee power tools and provides 20% more power than precessors.
The Milwaukee 18V 4.0Ah M18 Red Lithium Ion Battery M18B4 id ideal for any professional or DIYer who has Milwaukee Red 18V power tools. It has clever overload protection that helps to prevent battery abuse and and individual cell monitoring system to ensure the optimum charge and discharge is provided to also increased the battery life. To maintain the ideal temperature and to prevent overheating this battery has an intelligent temperature management system. This is supplied as a single battery. This battery is compatible with all M18 Milwaukee power tools and provides 20% more power than precessors.
The Milwaukee 18V 4.0Ah M18 Red Lithium Ion Battery M18B4 id ideal for any professional or DIYer who has Milwaukee Red 18V power tools. It has clever overload protection that helps to prevent battery abuse and and individual cell monitoring system to ensure the optimum charge and discharge is provided to also increased the battery life. To maintain the ideal temperature and to prevent overheating this battery has an intelligent temperature management system. This is supplied as a single battery. This battery is compatible with all M18 Milwaukee power tools and provides 20% more power than precessors.
in 37 offers
The lowest price for Milwaukee M18b4 18V 4.0Ah Li-ion Red Lithium Battery (Pre-Owned) right now is $35.00 at Cash Converters, compared across 8 retailers.
The all-time low was $35.00 on 3 Aug 2026. That's the lowest price we've ever tracked — a great time to buy.
Prices last updated 3 Aug 2026.
Last updated at 03/08/2026 01:44:11
Battery 18V 4.0AH LI-ION M18 Milwaukee
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Milwaukee M18 B4 4.0Ah Cordless Tool Battery
Delivery $16.50
Milwaukee M18 B4 Cordless Tool Battery
Delivery $16.50
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Delivery $12.50
Milwaukee M18b4 18V 4.0Ah Li-Ion Red Lithium Battery Cordless Tool Battery
Delivery $16.50
Milwuakee M18b4 Cordless Tool Battery
Delivery $16.50
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Delivery $14.50
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Delivery $14.50
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originally posted on ukplanettools.co.uk
This is a replacement battery for one which i run completly flat by a tool pressing on the Milwaukee drill trigger, turning on the drill light, draining the battery completly. Previous batteries have been exceptional hence repurchase.
originally posted on toolstation.com
So I bought this battery which was a sealed package & when I opened to put on charge found out it was faulty/knackeredI had to then go & return this item for a refund !!!same goes for the 2.0ah purchased
originally posted on screwfix.com
Having two of these already, when purchasing another Milwaukee bare drill I thought I'd best get another battery. Not been disappointed with milwaukee yet, the battery seems to last for ages whether drilling of chasing. Brilliant pieces of kit.
| Battery Capacity | 4.0Ah |
| Voltage | 18V |
Battery 18V 4.0AH LI-ION M18 Milwaukee
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!
Milwaukee M18 B4 4.0Ah Cordless Tool Battery
Delivery $16.50
Milwaukee M18 B4 Cordless Tool Battery
Delivery $16.50
Milwaukee M18b4 18V- 4.0Ah Cordless Tool Battery
Delivery $12.50
Milwaukee M18b4 18V 4.0Ah Li-Ion Red Lithium Battery Cordless Tool Battery
Delivery $16.50
This is a replacement battery for one which i run completly flat by a tool pressing on the Milwaukee drill trigger, turning on the drill light, draining the battery completly. Previous batteries have been exceptional hence repurchase.
So I bought this battery which was a sealed package & when I opened to put on charge found out it was faulty/knackeredI had to then go & return this item for a refund !!!same goes for the 2.0ah purchased
Having two of these already, when purchasing another Milwaukee bare drill I thought I'd best get another battery. Not been disappointed with milwaukee yet, the battery seems to last for ages whether drilling of chasing. Brilliant pieces of kit.
Great batteries and tools. I purchased this as a spare for my Milwaukee tools and love that I can use them over a range of the tools
I ran a construction company for a number of years using a lot of different battery powered tools costing fortunesI have found that the range of Milwaukee tools I’ve used and purchased over the last few years to be outstandingthey have never let me downthere build quality is very goodThe battery’s are powerful and long lastingThis brand is not the cheapest out therebut pound for pound spent they work out to be one of the cheapest as they go on and oneven when used constantly for site workLook out for there promotions these are great value
Milwaukee are better than DeWalt stronger and made to last and the batteries have a long life especially when doing heavy consistent work
I got the Milwakee battery and it working great.Good price for this battery. Fantastic service from Toolstation.
The only thing good about Milwaukee is the battery I have had 2 impact drivers replaced under their 3 year warranty it is the none FUEL version and the bushes and switch keep going. I have the chuck drill as well thats ok but hardly any use steer well clear of these tools I don't know if the fuel (brushless ) is any better as seen bad reviews for them as well. If your in the trade get hilti or panasonic both expensive but well worth the extra!
Needed another battery for my Milwaukee Kitto save waiting for one to charge. Proved a godsend, always reliable and a long charge life. Impressed by all Milwaukee kit.
Great quality Milwaukee always best
| Battery Capacity | 4.0Ah |
| Voltage | 18V |
