# Milwaukee M18 REDLITHIUM XC4.0 Battery

> Milwaukee M18 REDLITHIUM XC4.0 Battery (48-11-1840) is a battery from Milwaukee M18. It holds 4 Ah, weighs 1.7 lb, and has a 3-year limited warranty. Lowest in-stock price on file: $139.00 at Ohio Power Tool (checked Oct 29, 2026).

- Line: [Milwaukee M18](https://powertoolgrid.com/lines/milwaukee-m18/)
- Category: [Batteries](https://powertoolgrid.com/compare/battery/)
- Status: current
- Data confidence: confirmed (last verified 2026-10-29; [what this means](https://powertoolgrid.com/how-we-compare/#confidence))
- Page: https://powertoolgrid.com/products/milwaukee-m18-48-11-1840/

## Specifications

| Spec | Value | Source |
|---|---|---|
| Model number | 48-11-1840 | [milwaukeetool.com](https://www.milwaukeetool.com/products/details/m18-redlithium-xc-4-0-extended-capacity-battery-pack/48-11-1840) (brand, page, 2026-10-29) |
| Voltage on the label | not published |  |
| Capacity | 4 Ah | [milwaukeetool.com](https://www.milwaukeetool.com/products/details/m18-redlithium-xc-4-0-extended-capacity-battery-pack/48-11-1840) (brand, page, 2026-10-29) |
| Energy | not published |  |
| Weight | 1.7 lb | [milwaukeetool.com](https://www.milwaukeetool.com/products/details/m18-redlithium-xc-4-0-extended-capacity-battery-pack/48-11-1840) (brand, page, 2026-10-29) |
| Warranty | 3 yr | [milwaukeetool.com](https://www.milwaukeetool.com/products/details/m18-redlithium-xc-4-0-extended-capacity-battery-pack/48-11-1840) (brand, page, 2026-10-29) |

## Where to buy

| Store | Price (USD) | Availability | Checked | Link |
|---|---|---|---|---|
| Ohio Power Tool | $139.00 | in stock | 2026-10-29 | [View at Ohio Power Tool](https://www.ohiopowertool.com/milwaukee-tools-48-11-1840) |
| Tool Nut | $139.00 | in stock | 2026-10-11 | [View at Tool Nut](https://www.toolnut.com/products/milwaukee-48-11-1840-m18-red-lithium-xc-4-0-ah-ext) |
| Coastal Tool | $129.00 | out of stock | 2026-10-11 | [View at Coastal Tool](https://www.coastaltool.com/products/milwaukee-48-11-1840-m18-battery) |

Prices are re-checked weekly; a date more than a month old means the store could not be re-read.

## The same tool on other platforms

Same category, different line:

- [BLACK+DECKER 40V MAX 2.0Ah Battery](https://powertoolgrid.com/products/black-decker-40v-max-lbx2040/) — $89.00
- [BLACK+DECKER 40V MAX 2.5Ah Battery](https://powertoolgrid.com/products/black-decker-40v-max-lbx2540/) — $99.00
- [BLACK+DECKER 40V MAX 1.5Ah Battery](https://powertoolgrid.com/products/black-decker-40v-max-lbx1540/) — $79.00
- [Craftsman V60 2.5Ah Battery](https://powertoolgrid.com/products/craftsman-v60-cmcb6025/)
- [Craftsman V60 5.0Ah Battery](https://powertoolgrid.com/products/craftsman-v60-cmcb6050/)
- [Craftsman V60 7.5Ah Battery](https://powertoolgrid.com/products/craftsman-v60-cmcb6075/)
- [Craftsman V20 4.0Ah Battery](https://powertoolgrid.com/products/craftsman-v20-cmcb204/)
- [Craftsman V20 2.0Ah Battery](https://powertoolgrid.com/products/craftsman-v20-cmcb202/)


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PowerToolGrid lists battery yard tools from every brand side by side, with a source for every spec. [How we compare](https://powertoolgrid.com/how-we-compare/). Data as of 2026-10-29.