I have been using the FXR Recon heated gloves for two seasons. They are very effective at keeping my hands warm on the coldest days. I usually start with them on the highest setting and back them down to the low or middle setting. I have had two issues. On extremely cold days when they need to be operated on the higher settings the batteries are done after three hours. So plan on buying extra batteries, or you can do what I chose to do which is buy a second set so I don't have to change batteries on the trail. The other issue I have experienced is that I had two defective batteries, which FXR remedied immediately. Although it requires a commitment of time call them sit on hold and then return the old battery to them. The point here is if you purchase the Recon glove test them before you put them into service. I would suggest testing on a cold day by fully charging the batteries, placing them out side or put them in your freezer and check them every hour. If you have a bad battery it will show up in the first hour.