Good back-up, holds charge for days
These extra batteries really come in handy. My hussband loves it.
I mostly run these on high so they only last about 2.5 -- 3 hours before needing recharge witch is not a problem as I have 2 sets.i would recommend when buying gloves buy extra batteries if you use them at work as one set will not last all day..very happy with purchase would buy again.
Love the gloves. Glad we bought extra batteries