![]() I would love to hear from you if you bought the drill I just reviewed. ![]() You also will never regret getting a proper carrying case as part of the deal. No matter what cordless tool you acquire, always get two batteries. I have found this type of deal to be the best value, especially when considering the individual purchase price of a single battery and carrying case. The drill in this review comes with two batteries, a charger and contractor bag to carry it in. Whenever I buy tools, I look for the benefit of a "combo" purchase. The quality of lightweight construction and well-balanced design combined with 20 V power delivered by the lithium-ion batteries, make this an excellent tool value. The best temperature for storing batteries is about 60 degrees Fahrenheit.Ĭhoosing a DeWALT DCD777C2 20V Max Brushless Compact Drill Driver as your first portable electric drill purchase is something I can recommend without reservation. The only caution is don't store them in a place that is too hot, which is over 130 degrees Fahrenheit. Li-Ion batteries do not require the level of maintenance that the other two types require. They are lighter, Store more energy, and hold a charge longer with less charging time. Lithium-Ion batteries (Li-Ion) are the newest battery type. NiMH batteries cost less than Lithium-Ion batteries. However, similar to NiCd batteries, you will need to follow manufacturer recommendations for charging and storage carefully. They can store two or three times more energy than NiCad batteries, weigh less, and are better or the environment. Nickel-Metal Hydride (NiMH) Batteries offer some features that are better than the older NiCd batteries. Nickel-cadmium batteries are kind of quirky, so you will need to keep an eye on a proper storage and maintenance plan to get the most from them. They are inexpensive and have a lifespan of about one thousand charges, which is hard to beat. You will rarely find these in new cordless drills, but they are quite durable and tolerate temperature extremes very well. The oldest is the Nickel Cadmium (NiCd) battery. There are three types of batteries that are most common in cordless drills. ![]() Your cordless drill is only as good as the battery that powers it. More sophisticated technology-more expensiveīrushless Motors are 10 to 15% more efficient than brushed motors this means that more electricity is converted into useable rotating power than heat.No brushes to wear out- Low maintenance.Require more maintenance due to the brushes wearing out.A device that replaces the brushes and doesn't wear down. Newer Electric motors are constructed to eliminate brushes, and electricity is distributed through a commutating encoder. Older electric motors had small "brushes" that would make contact with the inner workings of an electric motor to deliver the power. DEWALT 20V drill with brushless motor for efficient performance Lightweight at only 2.4 lbs. All electric motors require there internal "Motor windings" to be energized with the electricity to work. What does brushless mean? Well, here is a super quick rundown on the functioning of an electric motor. ![]()
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