The Milwaukee 48-59-1808 is Milwaukee’s US M18 & M12 Rapid Charger. Milwaukee says it charges all M12 and M18 batteries, one at a time (sequentially), and charges packs up to 40% faster; its manual gives up to 4.5 A (M12) and 6.0 A (M18) output.
48-59-1808 Specifications
| Specification | Value |
|---|---|
| Part Number | 48-59-1808 |
| Compatible Platforms | Milwaukee M18 and M12 |
| Ports | Takes M18 and M12 packs (sequential charging) |
| Charging Mode | Sequential — charges one battery at a time |
| Input | US model; check the rating plate before use |
| Charge Time — M18 CP2.0 | 27 min (Milwaukee US chart, Rapid charger) |
| Charge Time — M18 XC5.0 | 60 min (Milwaukee US chart, Rapid charger) |
| Charge Time — M18 HIGH OUTPUT XC6.0 | 65 min (Milwaukee US chart, Rapid charger) |
| LED Indicators | Yes — red while charging, green when complete; fast-flashing red if too hot or cold (manual) |
| REDLINK Intelligence | Not confirmed in our Milwaukee sources |
| Weight | Not confirmed in our Milwaukee sources |
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Battery Compatibility
The 48-59-1808 charges all batteries in the Milwaukee M18 platform and all batteries in the Milwaukee M12 platform. Milwaukee says it charges all M12 and M18 batteries. Times below are from Milwaukee’s US M18 charge-time chart for its Rapid chargers; Milwaukee does not give M12 times for this charger in our sources.
| Battery Model | Platform | Capacity | Approx. Charge Time |
|---|---|---|---|
| 48-11-2401 | M12 | Not confirmed | Not stated |
| 48-11-2440 | M12 | 4.0 Ah | Not stated |
| 48-11-1820 | M18 | 2.0 Ah (CP2.0) | 27 min |
| 48-11-1840 | M18 | 4.0 Ah (XC) | 48 min |
| 48-11-1850 | M18 | 5.0 Ah (XC) | 60 min |
| 48-11-1860 | M18 | 6.0 Ah (XC6.0) | Not in the chart |
| 48-11-1862 (2-pack) | M18 | 6.0 Ah (HIGH OUTPUT XC6.0) | 65 min |
Sequential vs Simultaneous — What Does It Mean?
The 48-59-1808 has two battery ports but charges batteries one at a time (sequentially). If you insert two batteries, the charger will complete the first battery fully before moving to the second. This means total charge time for two batteries is doubled compared to what simultaneous charging would achieve. Milwaukee’s 48-59-1812 Multi-Voltage Charger also charges M18 and M12 packs one at a time, at a lower 3.0 A output.
Does the 48-59-1808 Charge Both M18 and M12?
Yes. Milwaukee says the 48-59-1808 charges all M12 and M18 batteries, one at a time. Its manual says to charge only Milwaukee M18 and M12 Li-ion batteries in it, so it will not charge Makita, DeWalt or other brands’ batteries.
Specifications reflect standard production variants. Always verify compatibility with your specific battery model before purchase. For the most current product information, visit the manufacturer’s official website.
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