Which devices are compatible with this battery?

It is compatible with all Milwaukee REDLITHIUM USB rechargeable tools and lights.

What are the voltage and capacity ratings of this battery?

The battery delivers a 4V voltage and features a capacity of 3,0Ah (12 Wh).

How much does the Milwaukee L4 B3 battery weigh?

The battery weighs 0,04 kg, keeping your device or personal light lightweight.

How many charging cycles does this battery support?

It delivers over 1000 charge cycles, eliminating the need for disposable batteries.

What battery chemistry does this model use?

It uses a 4V Li-ion cell engineered with REDLITHIUM protection against overload.

MILWAUKEE L4 B3 REDLITHIUM USB battery 3.0Ah - 4933478311

Name: MILWAUKEE L4 B3 REDLITHIUM USB battery 3.0Ah - 4933478311
Brand: MILWAUKEE
SKU: 03167094
Price: 38.91 EUR
Availability: InStock

Supplier number: MILWAUKEE 4933478311 | EAN 4058546345020

Recommended Retail Price €45.31

38.91 tax incl.

€32.16 excl. VAT (incl. all environmental contributions)

On stock - immediately available | we have 1 products in stock.

Ordered before 20:00 - delivered as of 03/10/2026
Shipping costs €11.99 VAT included | Free shipping for orders over a total amount of 125 euros
Delivery by DHL
1-year warranty on Milwaukee batteries and chargers after successful registration!
Delivered from Belgium

✆ Talk to a specialist

How does it work?

Buy Milwaukee products with a total order value of at least €250 excl. VAT.
For a total order value of €250 excl. VAT up to but excluding €500 excl. VAT, you receive a FREE Milwaukee 12-piece Tri-Lobe screwdriver set (4932472003) worth €55.90.
For a total order value of €500 excl. VAT up to but excluding €750 excl. VAT, you receive a FREE Milwaukee M18 125 mm Random Orbital Sander cordless random orbital sander (4933464228) worth €168.90.
For a total order value of €750 excl. VAT or more, you receive a FREE Milwaukee M18 FUEL 125 mm cordless angle grinder with slide switch and brake worth €357.90.
The free item is automatically added to your order. No registration is required.
This promotion cannot be combined with the ongoing Milwaukee Cashback Promotion on Milwaukee hand tools. An invoice for which you receive a free Buy More, Get More gift therefore cannot also be submitted for the Milwaukee hand tools cashback promotion.
The promotion is valid from 01.10.2026 to 31.10.2026.
Milwaukee Buy More, Get More deals are recognisable by the promotion label on the product page. Click the label to view all available deals.

Reliable power for Milwaukee tools

Practical benefits

Extended runtime during work: Delivering 3,0AH at 4V, this battery pack keeps your compact cordless devices running with dependable power.
Sustainable replacement for disposables: You eliminate the need for single-use batteries thanks to rechargeable lithium-ion cells designed for repeat charging.
Lightweight and portable design: Weighing only 0,04 kg, this unit adds minimal weight so you can carry it effortlessly anywhere.

In a nutshell

The right choise for

Power your jobsite headlamps, flashlights, and compact inspection tools with the Milwaukee L4 B3 battery. Delivering 4V and a 3,0Ah capacity (12 Wh), this Li-ion battery pack provides extended runtime so you can keep working through long tasks without unexpected downtime. Designed to deliver over 1000 charge cycles, it eliminates reliance on single-use disposable batteries for a more dependable and sustainable power source. Weighing just 0,04 kg, it keeps your gear lightweight and enables quick power swaps across all compatible Milwaukee redlithium usb devices.

Product information Accessories FAQ

€38.91

In stock - tax incl.

Key features according to our expert

Battery voltage: 4 V
Battery type: Li-ion
Weight: 0,04 kg
UN number: UN3480
Capacity (battery): 3 Ah

Product description

Compatible with all MILWAUKEE REDLITHIUM USB rechargeable products
With its 12 Wh it supplies up to 2x more capacity than three AAA Alkaline batteries for increased run time
Eliminates the need for disposable batteries with over 1000 charges for longer life

All Features

Battery voltage: 4 V
Battery type: Li-ion
Weight: 0,04 kg
Un number: UN3480
Capacity (battery): 3 Ah
Weight (kg): 0.04
Charging time l4 c charger: 120 minutes
Voltage (v): 4

Brand MILWAUKEE
03167094
EAN 4058546345020
Supplier number MILWAUKEE 4933478311
Warranty 1-year warranty on Milwaukee batteries and chargers after successful registration!

Accessories

MILWAUKEE L4PPS-301 REDLITHIUM USB portable power source and charger set...

Recommended Retail Price €97.25

82.12

€67.87 excl. VAT

Delivery time average 11 days.

Frequently asked questions about this product

Answered by specialists

Which devices are compatible with this battery?: It is compatible with all Milwaukee REDLITHIUM USB rechargeable tools and lights.
What are the voltage and capacity ratings of this battery?: The battery delivers a 4V voltage and features a capacity of 3,0Ah (12 Wh).
How much does the Milwaukee L4 B3 battery weigh?: The battery weighs 0,04 kg, keeping your device or personal light lightweight.
How many charging cycles does this battery support?: It delivers over 1000 charge cycles, eliminating the need for disposable batteries.
What battery chemistry does this model use?: It uses a 4V Li-ion cell engineered with REDLITHIUM protection against overload.