The NRG Optimizers can be charged using a USB cable. Simply plug in your device—without removing the NIMH rechargeable batteries—and watch the solid red light appear, indicating it’s charging. Once fully charged, the red light will flash, letting you know it’s ready to go.
Ideal for customers who need a replacement for a cable that came with the unit or for those who want an extra.
*Do not attempt to charge regular batteries. They must be NIMH rechargeable batteries.
