I have a fleece liner and a base layer liner both run off small rechargeable batteries which fit into the garments. They each have adjustable heat controls and I never use them on the high setting. The batteries seem to only need recharging every few months, if that but if I’m on the road, I top them off in the hotel. The heat usually generates for 4-6 hrs. on low settings. I’m not all that much of a long distance cold weather rider, so this solution works pretty well for me without wires plugging into the battery. But for continuous cold weather riding, I’d go the wired route.
Last edited by jerrman; 11-01-2018 at 05:35 AM.