--- product_id: 8052866 title: "DEWALT DCG412B 20V MAX* Lithium Ion 4-1/2” Grinder (Tool Only)" brand: "dewalt" price: "¥42270" currency: JPY in_stock: true reviews_count: 13 category: "Dewalt" url: https://www.desertcart.jp/products/8052866-dewalt-dcg412b-20v-max-lithium-ion-4-1-2-grinder store_origin: JP region: Japan --- # 8000 RPM high-speed motor Quick-Change Wheel Release 20V MAX Lithium-Ion battery powered DEWALT DCG412B 20V MAX* Lithium Ion 4-1/2” Grinder (Tool Only) **Brand:** dewalt **Price:** ¥42270 **Availability:** ✅ In Stock ## Summary > ⚙️ Power, Precision, and Freedom—Grind Like a Pro Anywhere! ## Quick Answers - **What is this?** DEWALT DCG412B 20V MAX* Lithium Ion 4-1/2” Grinder (Tool Only) by dewalt - **How much does it cost?** ¥42270 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/8052866-dewalt-dcg412b-20v-max-lithium-ion-4-1-2-grinder) ## Best For - dewalt enthusiasts ## Why This Product - Trusted dewalt brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Cordless Freedom:** 20V MAX Lithium-Ion battery lets you work untethered—no cords, no limits. - • **Ergonomic Control:** 2-position side handle and 2-finger trigger with lock-off button for ultimate comfort and safety. - • **Customizable Guard:** Tool-free adjustable guard adapts instantly to your cutting angle for precision and protection. - • **Tool-Free Wheel Changes:** Quick-Change Wheel Release means zero downtime swapping discs—get back to work faster. - • **Unmatched Power & Speed:** 8,000 RPM motor delivers relentless cutting and grinding performance for any job. ## Overview The DEWALT DCG412B 20V MAX Lithium Ion 4-1/2” Grinder is a cordless powerhouse featuring an 8,000 RPM motor and a 20V battery for high-performance cutting and grinding. Designed for professionals seeking mobility and efficiency, it includes a Quick-Change Wheel Release for tool-free disc swaps, an adjustable guard, and ergonomic controls to maximize comfort and safety on the job. Backed by a 3-year warranty and trusted by thousands, it’s the ultimate grinder for demanding projects. ## Description The DCG412B 20V MAX* Lithium Ion 4-1/2-inch / 5-inch Cordless Angle Grinder increases productivity with features like Quick-Change wheel release, convenient trigger switch with lock-off button, and extended run-time battery of the DEWALT cordless grinder. Review: Quality & Reliability - Reliability & performance are what I was looking for. So far, it has met both of those requirements. Will update as time passes. Would purchase again. Review: Great, powerful grinder. - Amazing and convenient! We have always owned an electric grinder... for many years. We always thought it would be more powerful and would never "run out" of battery. We were happily surprised by how much power this battery powered grinder had!! It was able to complete our project, while using it all day long! We were cutting through rebar and thick metal horse fencing this time. I can't say enough about how nice it is to mot have a cord, and be constrained by WHERE we could use our grinder... it is freeing. ## Features - 8,000 rpm motor provides high power for cutting and grinding applications for the angle grinder - DEWALT grinder comes with Quick-Change Wheel Release allowing tool free wheel removal without need for a wrench - Tool-free guard of the metal grinder allows for quick and easy guard adjustments/positioning - 2-finger trigger switch with lock-off button for convenient activation and easier gripping - 2-position side handle offers greater control, comfort and versatility ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B007NVSS1W | | Best Sellers Rank | #18,849 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #20 in Power Angle Grinders | | Brand | DEWALT | | Brand Name | DEWALT | | Color | Yellow | | Customer Reviews | 4.7 out of 5 stars 6,831 Reviews | | Global Trade Identification Number | 00885911260800 | | Included Components | bare-tool | | Item Dimensions L x W x H | 16.75"L x 7.32"W x 4.75"H | | Item Type Name | Dewalt DCG412B 20V MAX* Lithium Ion 4-1/2” grinder (Tool Only) | | Item Weight | 5 Pounds | | Manufacturer | DEWALT | | Manufacturer Part Number | GID-298441 | | Manufacturer Warranty Description | 3 Year Limited Warranty | | Maximum Rotational Speed | 8000 RPM | | Model Number | DCG412B | | Power Source | Battery Powered | | Product Dimensions | 16.75"L x 7.32"W x 4.75"H | | Style | 20V MAX Cut-Off Tool | | Style Name | 20V MAX Cut-Off Tool | | UPC | 885911260800 | | Voltage | 20 Volts | | Wattage | 2000 watts | ## Product Details - **Brand:** DEWALT - **Color:** Yellow - **Power Source:** Battery Powered - **Product Dimensions:** 16.75"L x 7.32"W x 4.75"H - **Style:** 20V MAX Cut-Off Tool ## Images ![DEWALT DCG412B 20V MAX* Lithium Ion 4-1/2” Grinder (Tool Only) - Image 1](https://m.media-amazon.com/images/I/71EQkE0uQFL.jpg) ## Available Options This product comes in different **Size, Style** options. ## Questions & Answers **Q: can I use 20V MAX Lithium Ion 5 AH battery for this tool? 5 AH is the correct one or no.** A: Any DeWalt or compatible 20v Li-Ion battery will work. They range from less than 2 Ah all the way up to 6 Ah. They'll all work the same, but the smaller the battery Ah capacity the less time they'll power the tool before recharging.I urge people to consider buying only the bare tool and buying generic DeWalt-compatible batteries. The difference today between the bare tool and the bundle that includes two 5.0 Ah batteries is $150. For $75 or less you can buy two generic DeWalt-compatible (IMPORTANT! all brands are keyed differently and are NOT interchangeable) 5.0 Ah batteries that work just fine. I have purchased 14 DeWalt or compatible 20v Li-Ion batteries thus far. All are working fine, and only two are DeWalt brand. The rest are Enegitech and some other no-name brands. I received one generic that had a problem, and the problem was trivial: the three "fuel gauge" lights would intermittently stay on permanently after the test button was pushed. The vendor immediately offered to refund half my money (I purchased them as a pair), or replace the battery. We decided to take the money and see how much of a problem it was for the lights to stay on. Wouldn't you know it. The problem soon went away! Sticky switch, I guess. But that's the only issue I've had, and we've used these A LOT. For $150, you can either buy these two DeWalt brand batteries or *4* generics. Trust me, if my experience is any indication, you'll be way happier to either spend half as much money for the same thing, or the same amount for twice as many batteries. Note: a 5.0 Ah battery lasts a LONG time. I don't have a grinder, so I don't know how long it'll run, but I have five brushless impact drivers, a hammer drill, a circular saw, a "Sawsall", and a portable shop vac, all DeWalt brand 20v Li-Ion tools. They all run GREAT on the generics. DeWalt doesn't manufacture batteries. They no doubt buy their batteries from the same Chinese factories that produce the generics. The only thing that's different is the cases and the way the slots are keyed so you can't use Black and Decker, Milwaukee, Bosch, etc. batteries interchangeably. The actual Li-Ion cells inside are all the same. **Q: Is this variable speed?** A: it varies from 0 to 6800rpm in less than a second. ;Dvariable speed would have been a feature i would appreciated a lot and would have made this tool even more useful. but still i'm using it a lot. **Q: Although the product description says it's ideal for electricians, do you think I could cut concrete if I were to use a 4 1/2 in diamond blade?** A: I've used this grinder to cut 1/2 in Hardiebacker when doing bathroom remodels. I use a cutoff/wafer wheel which isn't ideal for this use but it works. In my opinion it had adequate power but the fully charged battery lasted roughly 20 mins of almost continuous use (I cut about 4 sheets for a tub surround). So, to answer your question, I know it will cut concrete with a diamond wheel, but if I needed to use it continuously for an extended period of time I'd go with something corded which is the case with most battery powered saws/grinders. I hope this helps. **Q: How is the paddle switch on this compared to the trigger switch like all the other cordless grinders?** A: I find it to be far more ergonomic. Very smooth and responsive. You’ll love this grinder! Just be sure to get at least a 5ah battery or more for. 2ah only last like 10 min of continued use. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Quality & Reliability *by C***F on April 12, 2026* Reliability & performance are what I was looking for. So far, it has met both of those requirements. Will update as time passes. Would purchase again. ### ⭐⭐⭐⭐⭐ Great, powerful grinder. *by C***. on February 6, 2026* Amazing and convenient! We have always owned an electric grinder... for many years. We always thought it would be more powerful and would never "run out" of battery. We were happily surprised by how much power this battery powered grinder had!! It was able to complete our project, while using it all day long! We were cutting through rebar and thick metal horse fencing this time. I can't say enough about how nice it is to mot have a cord, and be constrained by WHERE we could use our grinder... it is freeing. ### ⭐⭐⭐⭐⭐ Very good product love dewalt *by P***E on May 14, 2026* Really a great tool just what I was looking for ## Frequently Bought Together - DEWALT 20V MAX 4-1/2 Inch Cordless Angle Grinder, Bare Tool Only (DCG412B) - DEWALT 20V MAX Circular Saw, 6-1/2-Inch Blade, 460 MWO Engine, 0-50 Degree Bevel Capability, Bare Tool Only (DCS391B) - DEWALT 20V MAX Reciprocating Saw, 3,000 Strokes Per Minute, Variable Speed Trigger, Bare Tool Only (DCS380B) --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.jp/products/8052866-dewalt-dcg412b-20v-max-lithium-ion-4-1-2-grinder](https://www.desertcart.jp/products/8052866-dewalt-dcg412b-20v-max-lithium-ion-4-1-2-grinder) --- *Product available on Desertcart Japan* *Store origin: JP* *Last updated: 2026-07-07*