709 Multi-function charger: Used to charge/AAA/9Vrechargeable batteries , Constant voltage small current charge,turn off the light when charging fully , and suitable use for high capacity battery. overcome voltage control not transfer light or not turn off the light of the weakness. For put on more long times battery (4-7months ), use of this charger have good effect, charging fully rate to above 85%, overcome voltage compare with the charger of charging fully weakness for put on long times of the battery ,long usage lifetime , get to CE/CCC/Rohs certificaiton. Note:Battery/Batteries are NOT INCLUDED