The Panasonic eneloop K-KJ55MBS66A includes 6 AA and 6 AAA eneloop 2100 cycle batteries (battery color may vary), and a Panasonic 3 Hour quick charger, BQ-CC55. eneloop Ni-MH, low self-discharge batteries utilize Panasonic’s advanced rechargeable battery technology allowing them to be recharged up to 2100 times. eneloop battery cells deliver consistent power performance, maintain 70% of their charge for up to 10 years, come pre-charged (at the factory) using solar power and are ready to use out of the package. These eneloop cells also have increased storage life and extreme temperature performance down to -4 degrees Fahrenheit. The Panasonic BQ-CC55, 3 Hour Ni-MH battery quick charger delivers advanced, individual cell charging capabilities. Ideal for use at home, in the office, or on the road, this Panasonic CC55 charger is a convenient way to quickly recharge any combination of up to four AA or AAA Ni-MH eneloop, eneloop pro, or other Ni-MH rechargeable batteries. The advanced eneloop quick charger features 4 LED charge indicator lights; 80-100% charged/Green, 20-80% charged/Orange, and 0-20% charged/Red. The charger also features a retractable AC plug.