18V Milwaukee M18 · Slide-on pack
4.0Ah replacement battery cross-referenced to 48-11-1840
A 4.0Ah / 72Wh slide-on pack for the Milwaukee M18 interface, built for distributors and private-label brands — your branding on the housing, no third-party logos.
- Rated capacity
- 4.0Ah
- Rated energy
- 72Wh
- OEM reference
- 48-11-1840
- MOQ
- 500-1,000 pcs per SKU
Rung 2 of 7
Where the 4.0Ah sits in the range
The value capacity: it doubles the runtime of the 3.0Ah in the same extended housing as the 5.0Ah, at a landed cost that still supports a retail price under the flagship. Most private-label programmes start here, because it is the SKU a first-time buyer compares on price and the least supply-constrained capacity in the range.
At 72Wh this pack stays under the 100Wh threshold, which keeps air freight and passenger-baggage rules straightforward — the simplest capacity band to ship and to sell into retail channels.
Technical overview
Product specification
Cell grade, fuel-gauge behaviour and protection thresholds are confirmed per programme during sampling — the values below are the platform baseline.
Full Milwaukee M18 series| Product type | Lithium-ion replacement power tool battery pack |
|---|---|
| Compatible platform | Milwaukee M18 |
| Voltage | 18V |
| Rated capacity | 4.0Ah |
| Rated energy | 72Wh |
| Compatible reference | 48-11-1840 |
| Form factor | Slide-on pack |
| Continuous discharge | 15C continuous |
| MOQ | 500-1,000 pcs per SKU |
Engineering
How this pack is built
- 01
Slide-rail and latch interface validated against OEM housing drawings or physical reference samples.
- 02
Fuel-gauge and overload protection thresholds tuned for drill, impact, and circular-saw load profiles.
- 03
Cells matched within 2 mOhm per parallel group for sustained high-draw fastening and cutting workloads.
- 04
Vibration-ready spot-weld tab design and foam compression for jobsite duty cycles.
Every capacity in this series ships under your own label — artwork, housing colour, packaging and pack configuration are specified per programme.
Private-label optionsSame series
Other capacity options
Need pricing, samples or custom packaging?
Send expected quantity, target market and branding requirements for the 4.0Ah (48-11-1840). Engineering reply within 1 business day.