![]() ![]() It needs to be recharged and discharged, if not constantly, then often. After all, each rechargeable battery has its own shelf life. If you take on a drill once or twice a year, it is better to buy an electric tool that works from a socket. Buying a cordless drill for very rare jobs Charging time depends on the characteristics of the battery and the charger. For a “pro” – a long time of recharging negates all his work. And its long recharging does not bring any inconvenience. Buy a drill that has more time to recharge than it works – a forgivable mistake for a home master. Long battery charging timeĬharging time is different for different models. It costs 2-3 times more, but gives you a few hours warranty. So choose a lithium-based drill for extended periods of work. The smallest capacity is that of cadmium batteries and the largest capacity is that of lithium-ion batteries. The capacity is measured in ampere-hours and depends on which cell is installed inside the battery. The higher the capacity, the more time you can work without recharging. Memory and self-discharge effects (much better when not available).īuying low capacity batteries for extended periods of timeīattery capacity has a direct effect on the operating time.Capacity (affects the duration of work).We recommend that you pay attention to these parameters: To avoid running every 20-30 minutes with the cordless drill to a rechargeable socket, read the battery passport. More than half the price you pay for a battery. If you start there, they’ll have a cordless drill that fits your needs.Incorrect battery selection The battery is the most expensive part of the tool. It’s just a matter of how hard the drill has to work in each gear.Īt the end of the day, pick a battery platform that has all of the tools you need at a price that fits your budget with the quality you expect. They all have enough torque muscle to keep driving the same bits. If you’re working mainly with twist bits and smaller spade bits/hole saws, having a higher top end speed makes sense.īut here’s the thing-all three of our example drills can do the same work. Giving up some top-end speed for a drill that lets you work at high speed for more bit sizes makes sense. If you’re a plumber or electrician, you’re drilling larger holes more frequently. The way to choose between cordless drill torque and speed is to take an honest look at the work you do. It’s tough to take different manufacturers with different motors, batteries, and electronics and then say with absolute authority which one you should buy. Looking at the data on a broader level, it doesn’t all work out that nicely and there’s a lot we can’t explain (like why a drill with 841 in-lbs of torque posts more soft torque than one with 1090 in-lbs). Even though it’s 100 RPM faster in low, it’s only 4 RPM faster with that 2-9/16″ bit. By giving up a little top-end speed in both modes, it’s able to handle these larger bits more easily. The other two drills are starting to slow down under these loads, but DeWalt still has more left to give. Notice how much higher DeWalt’s efficiency (percent of no-load speed) is. DeWalt has the slowest no-load speeds in both high and low gears along with the highest measured torque (it’s specced torque is actually significantly lower than the other two). The results don’t line up as nicely as the theoretical section above but there is a clear takeaway. I chose them because their measured soft torque numbers are in the same ballpark as each other. Here are three drills we compared head-to-head and how they actually did compared to their specifications. Feel free to pick through this data or just skip down to the conclusion. It’s all an intentional gearing decision.Įditor’s Note: This got geeky in a hurry. Drill #3 (600 RPM) looks pretty attractive, but it’s going to struggle more with bits that #2 is still steadily plugging away with. Even though Drill #2 (450 RPM) is the slowest, it’s likely going to give you more sustained torque and drive larger bits more effectively. Drill #1 (2000 RPM) finds a balance between the two. But Drill #3 (1900 RPM) is going to let you use larger bits without dropping into low speed. When you look at the high-speed ratings, Drill #2 (2100 RPM) is going to drill the fastest, right? Let’s say you’re considering three drills with the following specs: Drill #1Īll three drills are in the same ballpark for torque-we’re not considering a compact drill vs a heavy-duty one. While that might seem to complicate things, it’s still a good place to start. However, our top recommendations don’t always mimic the listed torque values. We take these into account in our best cordless drill article. ![]() The torque rating is a standardized test that measures how much torque the drill produces in a very brief moment while it’s locked down. ![]()
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