Many people have used cable drills before, and cordless drills are the answer for most owners and professionals in terms of flexibility.Cordless drills can be found in any hardware store, but a wide variety of models can be confusing, especially when you need a powerful but affordable drill.While 9 v to 12 v types are used for light duty work for most homeowners, I would suggest a better option for 18 v drill bits.The next problem is the weight compared to 12 v.Most 18 V cordless electric drills are heavier than 12 V, but now it's not hard to find 18 v electric drills that are as light as 12 v electric drills.Why do I prefer the 18 v drill?You have more ability to do work better and faster than smaller models, such as drilling holes and screwing screws.Once I have used the 18 v model, I find that I prefer to use it more often because it gives me more power to do the same task with less effort.At the end of the day, productivity is important and it is getting better and better.What kind of battery?There are 3 types of batteries to choose fromNickel-Cadmium (Ni-Cd), Nickel-Metal hydrogen (Ni-Mh) and lithium-Ion batteries.I would choose a lithium ion battery because it has several advantages over other batteries.1.Much lighter than NiCd and Ni-Mh 2.No Memory Effect 3.Lower self-discharge.More power can be maintained, which means there can be more running time when choosing a lithium ion battery.The light-The advantages of weight and running time prove that it is the best choice for cordless electric drills on the market.It provides a lot of power with only 12 v bit weight.The best recommended model to put all the features into the package Another question is which model to choose.Most people recommend Mu Tian BDF452HW.It has all the advantages of the 18 v bit, added 15-Charge for 1 minute.5Ah batteries.It takes only 15 minutes to charge quickly and it can last a day of drilling depending on usage.When you are working on the first battery, the second battery charge will never run out of battery power.Even if I forget to charge the second battery, I just have to wait 15 minutes instead of an hour.Ergonomic design with a weight of only 3 lbs.5 pounds wrist does not work too much pressure throughout the day.Thanks to the use of lithium ion batteries.Although it is more expensive than the lower version, I feel more confident and efficient about all tasks performed.Finally, I can't work without it