HAMMERHEAD HCSD040-02 4V Lithium Rechargeable Screwdriver with Patented Circuit Sensor Technology & 9Piece Bit Kit

Handy, easy to use and seems to have a decent battery life, time will tell how that works out.Got here reasonably quickly and was well packaged.Quite pleased with it, saves me from having to drag out the big heavy battery powered drill to put in screws. Also comes with a nice selection of quality bits.Holding onto the thing while driving screws takes some getting used to, but one gets used to it quickly.About the only thing I can come up with as a negative is that the battery doesn't appear to be replaceable, but when and if the internal ones goes west, cheap enough to replace the whole unit :-). Or perhaps see if it can be replaced with a bit of work. Not a problem in the grand scheme of things.The live wire detection seems to work quite well from the little I have used it. Positive ID in all cases I have tried.The microUSB charger is nice too, if you loose the one it comes with, the cord can be plugged into any regular USB outlet and can be used with phone chargers of the same current capacity. Or use the supplied one to charge your phone (or whatever) :-). Nice, no rooting around in your pile of wall warts to find the right one, many options :-).Appreciate the Comcast engineer who introduced me to this, makes life a bit simpler and certainly less wear and tear on the hands and arms.Overall quite pleased.

I purchased this to work on small electronics, laptop etc. It works well for that. Don't expect it to drive screws into hard wood or anything like that. You will need one of the 18 volt tools for that amount of torque.I used it to remove 16 M2.5 Hex head screws from the frame of a drone. I had tightened these screws by hand and they were quite snug. The hammerhead has no problem at all with these screws and it made short work of the task too.I love the following of the hammerhead:1. Feels comfortable in the hand and does not feel "cheap". Excellent ergonomics.2. Rechargability via USB is very convenient.3. The LED light is very helpful.4. The twist switch is much easier to use than the direction switch on my Ryobi 18V tools.5. The wire cutter and current sensor are nice little add-on features showing that the designers tried to make it useful.I won't say that I'm going to buy another one like some people write in their reviews. I don't need two of them. But if I did need more than one, I would not hesitate to get another one.

I own tons of tools, but not an electric screwdriver. After I viewed this driver on YouTube I thought it would be a real help doing repairs around the house, especially electrical work. After a day-long charge of the battery, I used it to remove the doors off my kitchen cabinets. It worked well. The handle is comfortable, and the weight seems to be well balanced. I think the torque of this driver suits the handle design. What I mean is that if it was more powerful it would need a larger grip. You can over torque the driver by manually loosening a stubborn screw. There is a bit of finger acrobatics involved in getting the drive wheel to work, but it’s not difficult for a large hand. It may be an issue for a smaller hand or for someone not as dexterous. The method I used was to loosen the screw manually and drive it out using the motor drive. Do the opposite when driving screws in. The LED light is a real help working in dim lighting. The circuit sensor worked fine on my driver. It alerts on any AC source within 1 to 8 inches, depending on the insulation. I haven’t used the built-in wire stripper, but it looks suitable. It does NOT come with a USB to AC adapter, something others complained about. Personally, I have a few of these adapters around the house so it was no issue for myself. And you can charge it from a computer USB port. I wish the design included a holder in or on the driver for all the bits. Despite it’s flaws, it’s a good addition to my tool collection.

Hard to believe this thing only costs $20. I like it more than my $35 Black & Decker which is the same voltage and also usb.The cable stripper is a gimmick and it doesn't have variable speed like the gyro ones, but it feels very solid in the hand and it's very comfortable to use.The voltage detector is nice to have too for electricians, it does seem to work well. The LEDs are really good, lasting 20sec after turning the trigger, and having two of them for NO shadow is really useful compared to the single led on my 18V drill which sits low on the battery and creates a bad shadow right where my eyes are. I like the fact that it's also a micro usb charger which means never losing the charger, a very big problem with most small electronics.Future suggestions, make the LEDs a warmer white and have a switch to turn on and off, sometimes you don't want them.Incorporating some sort of variable speed will go a long way too, although I know few such screwdrivers have it.

This thing is cool! I've had a few cordless screwdrivers over the years, but this is the one I reach for like crazy. It's utility make it a must to tag along.Great combo of features and price.So far, I've only had to charge it once and when I did, the Micro USB port means no searching for a special wall wart you've already lost. Brilliant.The LED headlights work wonderfully and even save your butt when you need a small flashlight. Great touch.It has a decent amount of torque to drive screws nicely but then clutches in when you need to just do it manually.The no touch power sensor is brilliant. Works as you might imagine.If I had one request it would be a way to hold even a couple of bits. I only really use 3 or 4. So having them self contained would be incredible.Overall, if it keeps working for a few years, I'll be beyond thrilled. So far I know I am.