Name: Milwaukee M18 B4 18v Cordless Li-ion Battery 4ah
Brand: Milwaukee
SKU: m18b4
Availability: InStock

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£57.95

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Description

The Milwaukee M18 B4 18v Cordless Li-ion Battery is a high-performance battery pack designed to power Milwaukee's M18 range of power tools. With a capacity of 4ah, this battery delivers long-lasting power and runtime, allowing you to work for longer periods without having to stop and recharge. Built with Milwaukee's advanced Redlink Intelligence technology, the M18 B4 Battery optimizes the performance of your tools, providing superior power and runtime while also protecting against overloading and overheating. This technology also helps extend the life of the battery, ensuring it maintains its performance over time. Features & Benefits • Can be used in temperatures down to -20°C without compromising on runtime and battery life • Durable metal frame battery construction with shock responsive separators preventing pack failure • Individual cell monitoring ensures optimal charge and discharge for maximum life • On-board battery fuel gauge helps the user to maximize his battery run-time efficiency • Redlithium protection with Redlink digital overload protection • Up to 2x run time, 20% power and 2x more battery life compared with other Li-ion technologies • Water protection routes water away from the electronics and out of the battery pack Specifications • Battery Capacity: 4ah • Battery Type: Milwaukee M18 Lithium-ion • Battery Voltage: 18v • Pack Quantity: 1 • System: M18 • Weight: 0.7kg

Full specifications

Marque	Milwaukee
Référence fabricant	m18b4
EAN	4002395377244

The Milwaukee M18 B4 18v Cordless Li-ion Battery 4ah in its market context in 2026

Choosing the Milwaukee M18 B4 18v Cordless Li-ion Battery 4ah means opting for the expertise of Milwaukee in the Batteries externes category. Its price starting from £64.9 makes it a serious option on the market. Buyers interested in this brand also look at the Milwaukee M12 HB2.5 12v Cordless High Output Li-ion Battery 2.5ah to complete their comparison. On Compiral, all displayed prices are updated regularly and retailers are selected for their reliability and quality of customer service.

Milwaukee: what this model offers

What buyers remember about the Milwaukee M18 B4 18v Cordless Li-ion Battery 4ah: consistent quality, intuitive use and a price that stays within market norms for this level of performance. The positioning of Milwaukee on the Batteries externes segment ensures access to spare parts and a structured after-sales service, which matters greatly in the long run. A solid choice in 2026, whether for a new purchase or to replace a failing device. Also discover the Milwaukee M18 HB5.5 18v Cordless High Output Li-ion Battery 5.5ah from the same brand for a second level of comparison.

The strengths that really make a difference

What truly differentiates the Milwaukee M18 B4 18v Cordless Li-ion Battery 4ah from other products in the Batteries externes category comes down to a few concrete points: the build quality typical of Milwaukee, its availability from many retailers and accessible after-sales support. These criteria, often decisive for buyers, favour this model over alternatives on the market in 2026. Compare with the Milwaukee M12 HB2.5 12v Cordless High Output Li-ion Battery 2.5ah if you wish to explore other models from the brand.

What you need to know before buying

Before buying the Milwaukee M18 B4 18v Cordless Li-ion Battery 4ah, check the following points: stock availability at your chosen retailer, the returns policy, warranty period and delivery charges. These details are accessible from our offers table at the top of this page. Milwaukee generally offers a well-structured after-sales network for the Batteries externes category. You will find complementary products in our Android Phones section.

Market price ranges in 2026

Range	Indicative price	For whom	What you get
Entry-level	Under 340 £	Tight budget, occasional use	Essential features, reliable for beginners
Mid-range	340 £ to 800 £	Regular daily use	Good value for money, solid performance
High-end	Over 800 £	Demanding users	The best of the category, all advanced features

Comparing prices before buying the Milwaukee M18 B4 18v Cordless Li-ion Battery 4ah can save you between £10 and £40 depending on the retailer and the time of year. Use Compiral to never overpay for your online purchases. The 2 offers listed on this page all come from verified retailers with sales conditions compliant with consumer protection law.

Frequently asked questions about Milwaukee M18 B4 18v Cordless Li-ion Battery 4ah

Is there a refurbished version of the Milwaukee M18 B4 18v Cordless Li-ion Battery 4ah?

Refurbished versions of the Milwaukee M18 B4 18v Cordless Li-ion Battery 4ah may be available from certain Compiral partner retailers. These refurbished products allow you to save between 20% and 40% compared to the new price while still benefiting from a warranty. Check availability in our offers table and review the warranty conditions offered by the retailer.

When do prices for the Milwaukee M18 B4 18v Cordless Li-ion Battery 4ah drop during the year?

Prices for the Milwaukee M18 B4 18v Cordless Li-ion Battery 4ah typically drop during Black Friday (November), the January sales and the summer sales (July). Promotional deals are also common around Cyber Monday and the holiday season. Our price history lets you spot trends and assess whether a price drop is likely soon in the Batteries externes category.

Is delivery free for the Milwaukee M18 B4 18v Cordless Li-ion Battery 4ah at all retailers?

Free delivery is not guaranteed for the Milwaukee M18 B4 18v Cordless Li-ion Battery 4ah at every retailer. Some include it in their price, others charge separately. On Compiral, use the free delivery filter to display only offers with free postage. The total price shown in our table always includes delivery costs for a true cost comparison.

How do I return the Milwaukee M18 B4 18v Cordless Li-ion Battery 4ah if I am not satisfied?

You have a 14-day right of withdrawal for any online purchase, applicable to the Milwaukee M18 B4 18v Cordless Li-ion Battery 4ah regardless of the retailer. Precise return conditions vary by retailer: check their returns policy before buying. Statutory consumer rights protect you in the event of a defect discovered after delivery.

Is the Milwaukee M18 B4 18v Cordless Li-ion Battery 4ah worth its price in 2026?

In 2026, the Milwaukee M18 B4 18v Cordless Li-ion Battery 4ah is listed from £64.9 at our partner retailers. This price is consistent with the positioning of Milwaukee in the Batteries externes category. To judge whether this price is currently attractive, check the price history on our product page. Also compare the total price including delivery to avoid any surprises at checkout.