Milwaukee 3485-20 Grinder
- Grinder
- Rechargeable battery
- 1.65 pounds
- 12 volts
- Better rated than 66%
A compact 12 volt grinder for light metalwork and tight spaces, not a replacement for a full-size angle grinder on heavy stock removal.
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How it ranks among the 150 grinders we track
4.7★ across 159 Amazon ratings, Bayesian-smoothed toward the category average.
159 Amazon ratings, weighted on a log scale so huge counts don't drown everything.
1,000+ bought on Amazon last month.
Brand identity, imagery, description and spec coverage.
The ProductDome score is separate from the Amazon rating shown above: it combines the Bayesian-smoothed Amazon rating with evidence volume, tracked demand, and data quality across the 150 grinders we track - how the scorecard works · full grinders data report. Confidence: medium - useful but incomplete evidence.Last refreshed Aug 4, 2026. Data-computed, not a hands-on test. Compiled by the ProductDome Research Team.
Overview
The Milwaukee 3485-20 is a 12 volt lithium-ion cordless grinder weighing 1.65 pounds, built for one-handed use on cutting, grinding or surface prep jobs where a full-size angle grinder is too bulky.
At 1.65 pounds this sits in Milwaukee's compact 12 volt line rather than its full-size grinder range, trading raw power for reach into tight spaces and reduced arm fatigue on overhead or awkward cuts. It is one of the higher-volume listings in this batch, with 1,000 units bought in the past month.
- 12 volt lithium-ion battery power
- 1.65 pound compact body
- 1,000 purchases in the past month
- 4.7 out of 5 stars from 159 reviews
Who it's for
Suits tradespeople and serious DIYers who already own Milwaukee's 12 volt battery platform and need a light, maneuverable grinder for metal work, deburring or tight-space cutting. Less suited to heavy material removal that calls for a full-size corded or high-voltage grinder.
Strengths and trade-offs
Drawn from this product's published specifications.
- 1.65 pounds for one-handed control
- Runs on Milwaukee's 12 volt lithium-ion platform
- 1,000 bought in the past month, among the most active listings here
- 4.7 star rating across 159 reviews
- 12 volts limits it against full-size corded grinders on heavy jobs
- Battery and charger availability depends on owning Milwaukee's 12 volt system
Performance notes
Being lithium-ion and 12 volt, output is scaled for control and portability rather than sustained heavy grinding, and the 1.65 pound weight keeps it maneuverable in one hand for longer stretches. That combination explains the steady demand among buyers doing precision or overhead work rather than bulk material removal.
Specifications
| Brand | MILWAUKEE |
|---|---|
| Model | 3485-20 |
| Power Source | Rechargeable battery |
| Item Weight | 1.65 pounds |
| Voltage | 12 volts |
Other MILWAUKEE grinders
How it compares
This product against the closest alternatives we track in grinders.
| Product | Amazon rating | Ratings | ProductDome score |
|---|---|---|---|
| Milwaukee 3485-20 GrinderThis product | 4.7 / 5 | 159 | 4.2 / 5 |
| DEWALT DCG413B GrinderDeWalt | 4.8 / 5 | 9,600 | 4.6 / 5 |
| AVID MW590 GrinderAVID | 4.5 / 5 | 6,100 | 4.4 / 5 |
| Makita 9557PBX1 GrinderMAKITA | 4.8 / 5 | 3,960 | 4.4 / 5 |
| CRAFTSMAN CMCG400B GrinderCraftsman | 4.7 / 5 | 2,900 | 4.4 / 5 |
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Questions about the MILWAUKEE 3485-20
Common buyer questions answered straight from the product spec data - no fluff, no "it depends".
What voltage battery does the Milwaukee 3485-20 use?
It runs on Milwaukee's 12 volt lithium-ion platform.
How much does it weigh?
1.65 pounds.
Is this a full-size angle grinder?
No, its compact 12 volt build and 1.65 pound weight place it in Milwaukee's lighter-duty grinder line.