I can understand that if this heating pad would heat warmer, the battery life would no longer be realized. However, I've expected more for this award because of the highest level is because too little heat to be felt. I see definitely potential for. If you want to have a good heating effect, it is essential to push the heating pad to the body approach. If one is, for example in bed and the heating pad laying on the belly it is not warm enough. In addition, surreptitiously me the impression that commercially available batteries were soldered into this special battery, designed for industrial enterprises.