Tenergy TN141 2 Bay 9V Smart Charger with 2 Pack Centura Low Self-Discharge 9V NiMH Rechargeable Batteries

Charged in a short time. Working great in my tens unit. Good batteries.

9 volt batteries are expensive, having rechargeable batteries just makes sense. These batteries charge quickly with the included charger. Anecdotal, but they seem to last longer than regular batteries.

Work fine in a medical device. With two rechargeables there's no worry about not having power.

Por ahora van bien. Actualizaré después de un tiempo de uso.

This 9 volt charger charges the batteries quickly-- in a couple of hours. They fit perfectly into my TENS unit and power it just as well as traditional batteries. I like the way it plugs directly into a wall outlet, with a fold-down plug. My only problem with it is that the batteries don't last in my TENS unit nearly as long as traditional ("Coppertop, etc.) batteries. With those I changed batteries every three or four days. These Tenergy batteries last less than one day. But I just put one on the charger while I use the other one. So far that works pretty well. At least I'm no longer throwing away batteries that pollute the environment, and that's a BIG plus!

excelente producto, soy guitarrsita y nesecitaba unas baterias para mis guitarras, compre estas con un poco de miedo, pero la verdad que me han aguantado un mes con una sola carga y he tocado entre 8 y 10 conciertos. las uso con una guitarra godin acs grand concert y con una gs mini taylor, y todo funciona de maravilla

Estaba necesitando unas baterías para mi guitarra electro acústica y estas ofrecen una excelente relación calidad precio

Works perfect, good batteries.