BioMedical NiMH AA Battery Charger

BioMedical NiMH AA Battery Charger helps user to make sure that TENS Unit is ready for use. For using simply plug into a wall outlet and insert rechargeable Ni Cad 9 Volt Battery. A green status light will let you know when your battery is charged. Please note do not attempt to charge non-rechargeable Alkaline Batteries in this unit.