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 5 years, come pre-charged by solar power (at the factory) 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 new Panasonic BQ-CC17, 4-position Ni-MH battery charger delivers advanced, individual cell charging capabilities. Ideal for use at home, in the office, or on the road, this Panasonic CC17 charger is a convenient way to recharge any combination of up to four AA or AAA Ni-MH eneloop, eneloop pro, or conventional Ni-MH rechargeable batteries. The CC17 charger also features 4 LED charge indicator lights and a retractable AC plug.