Here's some information that you should know in case if you want to explain the light indicators in case if you lose the book or have no one to read it to you.
Flashing green: Battery is charging
Steady Green: battery fully charged
Steady red: Problem with charging that battery.
Battery should be fully charge within 4 hours
If light turns red: unplug the charger and clean dry cotton cloth, clean the contacts of both the charger and battery, and try again.
If it still shows red: move battery to different space, use a different battery.
If light only shows red in the one space then the BTE recharger needs to be replaced.
If new battery is placed in the slot that shows red, return the bad battery to cochlear (I guess for disposing).
If no light shows: check power, if power is connected but green power is not on, get it replaced. I actually had an issue with the plug, Roy fixed it because the contacts for the US plug wasn't right. He fixed it easily.
That's about it! Wish you luck and enjoy your new toy!