Milwaukee M18™ 4.0 Ah Battery 18V - M18 B4
Milwaukee M18™ 4.0 Ah Battery 18V - M18 B4 is backordered and will ship as soon as it is back in stock.
Description
Description
Built for professionals who demand more from their tools, the Milwaukee M18™ 4.0Ah Battery – M18 B4 delivers up to 2X more runtime, 20% more power, and 2X more battery life than standard lithium-ion alternatives. Designed with REDLITHIUM™ battery technology and REDLINK™ digital overload protection, it ensures performance even under tough conditions. The M18 B4 battery resists extreme temperatures, vibrations, and drops—making it a reliable energy source for any job site. With individual cell monitoring, a durable metal frame, and water protection routing, this battery delivers unmatched endurance and efficiency.
Key Features:
- Extended Performance: Up to 2X more runtime and 20% more power*
- Longer Battery Life: Up to 2X more charge cycles
- Advanced REDLINK™ Protection: Prevents damage from overload
- Durable Metal Frame: Built to resist shock and drops
- Water Protection: Routes moisture away from sensitive components
- Cold-Weather Ready: Operates in temperatures as low as -20°C
- Fuel Gauge: Monitor battery level for runtime efficiency
- Performance may vary based on tool and application.
Specifications:
- Model: M18 B4
- Article Number: 4932430063
- Battery Pack Capacity: 4.0Ah
- Battery Type: Li-ion
- System: M18
- Voltage: 18V
- Weight: 0.7 kg
- Supplied In: No kitbox or bag supplied
-
Charge Times: M12-18 AC / C / M1418C6: 80 min & M12-18 FC / SC / M18 DFC: 52 min
The Milwaukee M18™ 4.0Ah Battery (M18 B4) is engineered to provide up to twice the runtime and 20% more power compared to standard lithium-ion batteries. It features REDLINK™ Intelligence for optimized performance and overload protection, individual cell monitoring for maximum battery life, and a durable construction with shock-responsive separators. This battery operates efficiently in extreme temperatures down to -20°C and is compatible with the entire range of Milwaukee M18™ cordless tools.
Secure Payment - Powered by Paystack
100% Guarantee: If you don’t receive your product as described, we’ll refund you in full.
Four reasons this is the right fit
Professional-grade quality built for demanding applications.
Trusted performance from Milwaukee.
Designed for reliability in real-world conditions.
Field-tested and proven to deliver consistent results.
Verified Supplier Network
Products are sold by contracted, authorised suppliers through Supply Master.
Managed Customer Experience
Supply Master manages the buying journey from product discovery to last-mile delivery.
One Point of Contact
Customers deal with Supply Master for updates, support, and resolution.
Support Beyond Delivery
After-sales support, warranty and returns are handled through our team.
We review orders to confirm before fulfilment to make sure the product, price, availability, and delivery details are aligned.
- - Orders are processed Monday to Friday.
- - Confirmed orders are usually ready for fulfilment within 24 to 48 hours.
- - Some products may require availability or supplier confirmation before dispatch.
- - Friday orders may be scheduled for Saturday delivery where possible.
- - Weekend orders are reviewed from Monday.
- - Bulky, special-order, regional, or supplier-dependent items may require extra lead time.
Ordering through Supply Master is simple, but every order is still reviewed before fulfilment.
- - Select your item and choose Buy Now or Add to Cart.
- - Enter your contact details, delivery address, and preferred payment method.
- - Pay on Delivery or online payment options will show based on your location and order eligibility.
- - Supply Master reviews your order and coordinates with our supplier network to confirm availability and fulfilment readiness.
- - Our team may contact you to confirm details, recommend alternatives, or update you before dispatch.
- - Once confirmed, your order moves into fulfilment or delivery coordination.
- - If an item is unavailable, we may offer alternatives, confirm restock options, or process a refund where applicable.
Delivery is coordinated based on your location, product size, supplier readiness, and handling requirements.
- - Free delivery may apply to eligible orders within selected zones and order values.
- - Regional deliveries may follow scheduled dispatch days from Accra.
- - Bulky, fragile, special-order, or supplier-dependent items may require a separate delivery quote.
- - Supplier-backed warranty support is coordinated by Supply Master where applicable.
- - Eligible unused items may be returned within 7 days if kept in original packaging.
Pay on Delivery is available for eligible orders and selected delivery locations.
- - Greater Accra: available on eligible orders.
- - Zone A cities: available on orders up to GH₵1,000.
- - Zone A orders between GH₵1,000 and GH₵4,999 may require up to 50% commitment payment.
- - Orders of GH₵5,000 and above require full payment before delivery.
- - Zone A includes Kumasi, Takoradi, Tarkwa, Cape Coast, Ho, and Sunyani.
- - Payment options are shown at checkout based on your delivery location and order value.
- - If Pay on Delivery is not available, online payment options will be shown.
Trusted across 50,000+ deliveries.
Built on verified suppliers, coordinated fulfilment, and support that stays accountable before, during, and after delivery.
Out of Stock? We'll Find the Alternative.
If a product is unavailable, our team helps you find suitable alternatives.
