Need to own a battery supply company
I love the tens unit, it does what a great job on working my teens muscles. However, I am going broke with having to replace batteries every  2-3 days! I am using top shelf batteries to ensure longevity, I make sure the unit is turned off after each use. At this point I am going to have to return the unit due to the expenses of battery replacement. It would have been nice if it came with a charger to plug into the unit and not have to use the batteries.
Rating: 1 stars