Which batteries are compatible with this charger?

The charger is compatible with all Milwaukee 12V and 18V Li-ion batteries (M12 and M18). It features 2 dedicated M18 bays and 2 hybrid M12/M18 bays.

Does this charger charge all 4 batteries simultaneously?

It rapidly charges 2 batteries simultaneously and automatically switches to charge the next 2 once the first pair is finished.

How do you mount the charger inside a gang box or steel storage unit?

You can mount it tool-free using the strong magnetic base or mounting cleat. 2 integrated levers allow quick removal from metal surfaces.

Does this model include integrated lighting?

Yes, it features a built-in 450 lm LED floodlight to illuminate your storage box or work area.

Can you charge mobile devices with this charger?

Yes, the charger features 2 integrated 15W USB-C ports to charge smartphones and other personal devices.

MILWAUKEE M12-18 GBC4 gangbox battery charger - 4933493863

Name: MILWAUKEE M12-18 GBC4 gangbox battery charger - 4933493863
Brand: MILWAUKEE
SKU: 08123284
Price: 370.21 EUR
Availability: PreOrder

Supplier number: MILWAUKEE 4933493863 | EAN 4058546510237

Recommended Retail Price €458.54

370.21 tax incl.

€305.96 excl. VAT (incl. all environmental contributions)

On order: delivered from 24/10/2026

Ordered before 20:00 - delivered as of 24/10/2026
Free shipping
Delivery by DHL
Up to 5 years Milwaukee warranty after successful registration!

✆ 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 (4933498062) 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.

Efficient charging in jobsite gangboxes

Practical benefits

Versatile tool-free mounting: You mount the Milwaukee charger effortlessly using the strong magnetic base.
Simultaneous fast charging: You charge two batteries at once with automatic sequencing to the remaining bays.
Built-in bright floodlight: The integrated 450 lumen light clearly illuminates your stored tools and supplies.

In a nutshell

The right choise for

With the Milwaukee M12-18 GBC4 gangbox charger, you keep your Milwaukee batteries powered and organized directly inside your steel storage chest. The strong magnetic base enables tool-free mounting on metal surfaces, freeing up valuable floor and bench space. Delivering a 6 a charging current, it rapidly charges two Li-ion batteries simultaneously before automatically switching to the remaining two. Two dedicated M18 bays and two hybrid M12/M18 bays allow you to support both platforms with a single station. An integrated 450 lumen led floodlight illuminates dark storage containers, while two 15W usb-c ports conveniently charge your mobile devices.

Product information Accessories FAQ

€370.21

tax incl.

Key features according to our expert

Battery voltage: 12 V; 14,4 V; 18 V
For battery type: Li-ion
Number of charging slots: 4
Charging current: 6 A
Power bank function: Yes
UN number: Not applicable
Fast charger: Yes

Product description

Designed for users working out of gang boxes or other steel storage spaces on job sites
Tool free mounting in multiple orientations via strong magnetic base or cleat, maximising storage space
Illuminate stored supplies with built-in 450 lm flood light
Simultaneous charging of two batteries at rapid charge rate for both M18 and M12, then automatically switching to the next two
Simultaneous charging of personal devices with the two USB-C 15 W ports
Charger features two M18 only bays and two M18 and M12 hybrid bays
Fully compatible with all M18 and M12 batteries
Two integrated levers for quick removal from metal surfaces

All Features

Battery voltage: 12 V; 14,4 V; 18 V
For battery type: Li-ion
Number of charging slots: 4
Charging current: 6 A
Power bank function: Yes
Un number: Not applicable
Fast charger: Yes
Charging time m12 5.0 ah battery (min): 75
Charge rate (a/hour): 6.0/4.5
Charging time m18 4.0 ah battery (min): 52
Charging time m18 12.0 ah battery (min): 130
Charging time m18 3.0 ah battery (min): 36
Charging time m12 2.0 ah battery (min): 26
Charging time m12 2.5 ah battery (min): 40
Charging time m12 6.0 ah battery (min): 95
Charging time m12 3.0 ah battery (min): 50
Charging time m18 5.0 ah battery (min): 59
Charging time m18 forge 6.0 ah battery (min): 60
Charging time m18 2.0 ah battery (min): 26
Charging time m18 5.5 ah battery (min): 60
Charging time m12 4.0 ah battery (min): 52
Charging time m18 forge 12.0 ah battery (min): 130
Charging time m18 forge 8.0 ah battery (min): 87
For li-ion battery type: Yes
For battery type nicd: No
Power source: AC
Voltage (v): 43435
For battery type nimh: No
Battery type: Li-ion

Brand MILWAUKEE
08123284
EAN 4058546510237
Supplier number MILWAUKEE 4933493863
Warranty Up to 5 years Milwaukee warranty after successful registration!

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Frequently asked questions about this product

Answered by specialists

Which batteries are compatible with this charger?: The charger is compatible with all Milwaukee 12V and 18V Li-ion batteries (M12 and M18). It features 2 dedicated M18 bays and 2 hybrid M12/M18 bays.
Does this charger charge all 4 batteries simultaneously?: It rapidly charges 2 batteries simultaneously and automatically switches to charge the next 2 once the first pair is finished.
How do you mount the charger inside a gang box or steel storage unit?: You can mount it tool-free using the strong magnetic base or mounting cleat. 2 integrated levers allow quick removal from metal surfaces.
Does this model include integrated lighting?: Yes, it features a built-in 450 lm LED floodlight to illuminate your storage box or work area.
Can you charge mobile devices with this charger?: Yes, the charger features 2 integrated 15W USB-C ports to charge smartphones and other personal devices.