Dewalt FAQ: 12V Batteries, 2-Amp Chargers, Power Tool Rental in Rapid City, SD, and More

I handle a lot of purchasing for our company—tools, supplies, and the occasional thing that has no business coming through my desk. When I took over purchasing in 2020, I realized quickly that people assume the admin department knows everything about everything. We don't. But we get good at finding out. Over the years, I've had to answer questions about battery platforms, rental shops, and even internet GIFs. Here's a set of FAQs that I've actually had to answer, with a few lessons that cost me time and money.

FAQs: What You Probably Want to Know

• Is a 12V Dewalt battery worth it if we already have 20V tools?
• How long does the Dewalt 2 amp battery charger take to charge a 12V battery?
• Should we rely on power tool rental in Rapid City, SD, or buy our own?
• Why are impact wrench GIFs everywhere?
• Does a muffler delete affect emissions?
• Are aftermarket Dewalt batteries a bad idea?
• How do I avoid buying the wrong battery charger for our team?

1. Is a 12V Dewalt battery worth it if we already have 20V tools?

If you're mostly using 20V tools, you might think the 12V platform is redundant. That's the oversimplified version. But the 12V line is surprisingly handy for light-duty work—screwdrivers, small ratchets, and those tight spots where a 20V drill feels like a brick. In our company, we use the 12V for the maintenance guy's daily rounds. It's lighter, easier to carry, and fits in tighter spaces. The 20V MAX line covers everything from drills to saws to impact wrenches, so it's easy to stick with that ecosystem. But the 12V and 20V platforms aren't interchangeable—each has its own batteries and chargers. That said, if you're on a tight budget, adding another battery platform isn't a no-brainer. You're buying new chargers and batteries, and the tool selection is more limited. In my experience, it's worth it only if you have enough light-duty tasks to justify the switch. Otherwise, stick with one platform and keep it simple. Plus, the 12V batteries are pretty affordable, so you can grab a couple without breaking the department budget.

2. How long does the Dewalt 2 amp battery charger take to charge a 12V battery?

For a standard 12V max 2.0Ah battery, the 2 amp charger is rated to charge it in about 60 minutes. According to Dewalt's official documentation (dewalt.com), that's the expected time for a full charge. It checks out in practice. Our maintenance guy plugs it in at lunch and it's ready by the afternoon. One tip: don't trust the marketing that says "fast charge" if you're using a 2A charger. It's not a rapid charger. If you need faster turnarounds, you'd need the 4A or 6A charger, but for most of our needs, the 2A is fine. Just don't expect a dead battery to reach full in 20 minutes. Set expectations with your team and you'll avoid a lot of grumbling. Another thing I learned: the 2A charger only charges one battery at a time. If you have multiple batteries to top up, get a multi-port charger or rotate them. And for long-term storage, keep batteries around 50% charge—it extends their lifespan.

3. Should we rely on power tool rental in Rapid City, SD, or buy our own?

For occasional use, renting is usually the smarter move. In Rapid City, SD, most equipment rental places carry the basics—drills, saws, even some heavier demolition gear. We rented a demolition hammer for a three-day project instead of buying a $700 tool. Total rental cost was $180, and we didn't have to store it or maintain it. But if a tool is used weekly, buying makes more sense. Also, specialty cordless tools—like the higher-end Dewalt kits—aren't always available for rent. In that case, buying or having a vendor drop-ship it is faster. Call your local rental place first. Their stock changes, and it's painful to plan a job around a tool they don't have. One more thing: check the rental terms for damage and insurance. An accidental drop can cost you more than the rental fee. For our company, we have a simple policy: tools used more than five times a year get purchased. Bottom line: rent for one-off projects, buy for regular use.

4. Why are impact wrench GIFs everywhere?

Honestly? Because watching a stuck bolt break free is incredibly satisfying. Impact wrench GIFs are the internet's favorite way to show torque doing what torque does. But there's a practical side too: if you've never used one, an impact wrench can save you minutes on every stubborn fastener. For our fleet maintenance guy, it turned a 20-minute lug nut fight into a 30-second job. The GIFs you see are basically showing that efficiency in action. Just remember, the GIF doesn't show the battery management. That's where the 12V battery and the 2-amp charger come in—you need the right platform to keep the tool running. Unlike pneumatic impact wrenches, a cordless one depends heavily on having a charged battery ready. So, sure, enjoy the GIF, but know that behind every satisfying video is a properly charged battery. And if you're wondering why they always look so dramatic, it's because the tool releases high torque in a quick burst—that sudden snap is what your brain likes.

5. Does a muffler delete affect emissions?

This is one of those questions that sounds simple but has a gray area. Strictly speaking, removing the muffler doesn't change what comes out of the tailpipe. The muffler's job is noise reduction, not emission control. What does affect emissions is removing or gutting the catalytic converter, oxygen sensors, or other emissions hardware. According to the EPA (epa.gov), tampering with emission control devices is illegal under federal law. Also, many states require a muffler for road use, and a muffler delete can fail your safety inspection even if emissions are fine. There's also the diesel side: diesel trucks have a diesel particulate filter and DEF system—those are the critical pieces. If you delete those, you're definitely breaking the law and creating visible smoke. I'd say: if you're talking about a work truck, don't do it. The internet will tell you it's fine, but the legal and inspection headaches aren't worth it.

6. Are aftermarket Dewalt batteries a bad idea?

It's tempting to save $30 on a battery that looks identical to the real deal. But in my experience, aftermarket batteries are a gamble. I once ordered a "compatible" battery and it didn't fit properly, had fewer charge cycles, and one of them actually swelled up after three months. To be fair, some aftermarket brands are decent, but you're betting on a battery that didn't go through the same testing. A swollen battery in a $600 tool is a safety red flag. Genuine Dewalt batteries come with a warranty, and Dewalt will service them. Aftermarket ones? You're lucky if they honor anything. The cost difference is small when you factor in lifespan. For our company, we stick with genuine Dewalt batteries—especially for the 12V line, since they're not that expensive anyway. The peace of mind is worth the extra money. If you're on a budget, watch for sales rather than risking a knockoff.

7. How do I avoid buying the wrong battery charger for our team?

This is where the communication failures happen. I once asked our maintenance lead what he needed, and he said "a charger for the Dewalt batteries." I ordered a 2-amp charger because that's what I thought fit. Turns out he meant a 4-amp rapid charger for the 20V batteries. We were using the same words but meaning different things. Discovered this when the order arrived and we saw the wrong dock. Now I always ask for the model number and check the battery format. It's also worth standardizing: put a 2-amp charger at each workbench for the 12V batteries and label the 20V chargers. In our 2024 vendor consolidation project, we set up a standard battery checklist for all sites. That cut our ordering mistakes by 80%. It sounds simple, but when you're managing orders for multiple locations, the wrong charger can waste days. My rule: get it in writing, with a photo of the battery dock, before placing an order. Also, verify the voltage and amp-hour rating—not just "Dewalt" but the exact model.