If you’re in the market for a powerful and reliable cordless drill, Dewalt is a name that probably came up in your search. Two popular models, the Dewalt 791 and the Dewalt 991, often stand out as top choices for both professionals and DIY enthusiasts. But how do you choose between them?
here’s a comparison table summarizing the key differences between the Dewalt 791 and Dewalt 991 cordless drills:
| Feature | Dewalt 791 | Dewalt 991 |
|---|---|---|
| Power (UWO) | 460 UWO | 820 UWO |
| Battery Capacity | 2.0Ah (Typically) | 5.0Ah (Typically) |
| Size and Weight | Compact and Lightweight | Larger and Heavier |
| Chuck Size | 1/2-inch Ratcheting Metal | 3/4-inch Metal |
| Speed Settings | 2 Speed Settings | 3 Speed Settings |
| LED Work Lights | Yes (Available) | Yes (Available) |
| Accessories/Bundles | Varies by Retailer | Varies by Retailer |
| Price Range | Budget-Friendly | Higher-End |
1. Power and Performance
Dewalt 791: This drill packs a punch with its 20-volt MAX XR lithium-ion battery. It offers a maximum power output of 460 unit watts out (UWO), making it ideal for a wide range of drilling and fastening tasks. Whether you’re working on wood, metal, or even masonry, the Dewalt 791 can handle the job.
Dewalt 991: If you need even more power, the Dewalt 991 steps up the game with a 3-speed transmission and a maximum UWO of 820. This makes it a beast when it comes to tackling heavy-duty tasks, like drilling through concrete or driving large screws into dense materials.
Example: Let’s say you’re building a wooden deck, and you need to drive long, thick screws into pressure-treated lumber. The Dewalt 991’s extra power will make this job a breeze, whereas the 791 might struggle a bit with such demanding tasks.
2. Battery Life
Dewalt 791: The 791 typically comes with a 2.0Ah battery, which is decent for most jobs. You can expect a good amount of runtime, but if you’re tackling a big project, you might need to recharge or have a spare battery on hand.
Dewalt 991: On the other hand, the 991 often comes with a higher-capacity 5.0Ah battery. This means you can work for longer periods without interruption, making it an excellent choice for contractors or anyone who needs all-day performance without frequent charging.
Example: Imagine you’re building a fence around your property, which requires driving a lot of screws. The Dewalt 991’s larger battery will save you time and hassle by reducing the need for constant recharging.
3. Size and Weight
Dewalt 791: If portability and maneuverability are essential to you, the 791 has a more compact design and is lighter in weight compared to the 991. This makes it easier to use in tight spaces or for extended periods without causing fatigue.
Dewalt 991: While the 991 is more substantial and bulkier, its extra size is a trade-off for the increased power and battery capacity. It might not be as comfortable for long-term use in cramped quarters, but it excels in more extensive, heavy-duty applications.
Example: Think about installing cabinets in your kitchen. The Dewalt 791’s smaller size and lighter weight will allow you to work comfortably in the tight spaces between cabinets, while the Dewalt 991’s power might be overkill for this task.
4. Price Point
Dewalt 791: Typically, the Dewalt 791 is more budget-friendly compared to the 991. It offers great performance for its price, making it an attractive choice for DIYers or those on a tighter budget.
Dewalt 991: With its higher power and capacity, the Dewalt 991 comes with a higher price tag. However, if you require the extra power and extended battery life, the investment can be well worth it for the efficiency and time saved on the job.
Example: If you’re a professional contractor who relies on your drill daily, the Dewalt 991’s upfront cost might be justified by the increased productivity it provides.
5. Chuck Size
Dewalt 791: The Dewalt 791 comes with a 1/2-inch ratcheting metal chuck, which is suitable for a wide range of drill bits and accessories. It provides good grip and reliability for various drilling and fastening tasks.
Dewalt 991: In contrast, the Dewalt 991 boasts a larger 3/4-inch metal chuck. This increased size allows you to use even bulkier drill bits and accessories, making it a better choice for heavy-duty drilling applications.
Example: Imagine you’re working on a construction project where you need to use a large auger bit to dig deep holes for fence posts. The Dewalt 991’s larger chuck size will accommodate the auger bit with ease, whereas the 791 might struggle with it.
6. Speed Settings
Dewalt 791: This drill typically offers two speed settings, allowing you to switch between high and low speeds depending on the task at hand. It provides versatility for various drilling and driving applications.
Dewalt 991: The Dewalt 991, with its 3-speed transmission, offers even greater versatility. You can fine-tune the speed to match the specific requirements of your project. This is particularly handy when you need precise control, such as when driving screws into delicate materials.
Example: Let’s say you’re assembling furniture that requires both drilling pilot holes and driving screws. The Dewalt 991’s extra speed settings make it easier to switch between tasks quickly and without damaging the material.
7. LED Work Lights
Dewalt 791: Many versions of the Dewalt 791 come equipped with LED work lights near the chuck. These lights illuminate your workspace, making it easier to work in low-light conditions or tight spaces.
Dewalt 991: The Dewalt 991 also features LED work lights, ensuring that you have good visibility while working on your projects. This is especially beneficial when you’re drilling or driving screws in areas with limited light.
Example: Picture yourself doing repairs under your sink or in a dimly lit garage. The LED work lights on both drills will help you see exactly where you’re working, reducing the chances of errors and accidents.
8. Accessories and Bundles
Dewalt 791: Depending on where you purchase it, the Dewalt 791 may come with different accessories and bundle options. These could include additional batteries, carrying cases, or drill bit sets. Be sure to check what’s included when making your purchase.
Dewalt 991: Similarly, the Dewalt 991 may also have various bundle options available. Given its higher price point, it’s common to find packages that include extra batteries and accessories to maximize the value of your purchase.
Example: When deciding between the two drills, consider the bundled accessories and their relevance to your needs. Sometimes, a bundled package can offer significant savings compared to buying each item separately.
