The gloves I use to keep my hands and fingers warm while taking photos on cold days are from a company called Gerbing. Gerbing makes a whole host of heated clothing. Since I suffer from a condition called Raynaud's Disease (my fingers get extremely numb when exposed to cold for even short periods of time), the Gerbing heated gloves are a perfect solution for cold fingers during cold weather photography. Not only do these gloves keep my hands and fingers warm, but they also give me enough dexterity to fully operate my digital camera equipment without any sacrifice in speedy camera and lens operation.
These Gerbing heated gloves are powered by lithium ion batteries (one for each glove). Each battery has 4 heat output settings (100%, 75%, 50% and 25%). On the 100% setting the battery charge will last for about 2 hours. The charger will charge both batteries at the same time which is a very convenient time saver. Admittedly, these gloves are expensive ($180.00 for my camouflage version pictured above). But when you've got to get the pictures during cold weather, there is no better choice. Check out the video description of Gerbing's battery powered heated gloves below.