Panasonic BK-3HCCA12FA eneloop Pro AA High Capacity Ni-MH Pre-Charged Rechargeable Batteries, 12 PackPanasonic eneloop Pro high capacity Ni-MH “low Self discharge” batteries utilize Panasonic's advanced rechargeable battery technology providing up to 2550mAh (AA batteries)/ 950mAh (AAA) of power and the ability to be recharged up to 500 times. eneloop Pro battery cells deliver consistent power performance, maintain 85% of their charge for up to one year, come pre-charged by solar power (at the factory) and are ready to use out of the package. These eneloop cells also have increased power, added storage life and extreme temperature performance down to -4 degrees Fahrenheit.Panasonic K-KJ75KHC4BA Advanced Battery Charger with USB Charging Port and 4AA Eneloop Pro High Capacity Rechargeable BatteriesThe Panasonic CC75, 4-position Ni-MH battery charger individually charges any combination of up to four AA (up to 9 hours) or AAA (up to 7 hours) Eneloop Pro batteries; and 4AA Eneloop 7 hours, 4AAA Eneloop 6 hours. Individual charging means you can easily and efficiently charge from 1 to 4 batteries with differing levels of remaining charge. Outlets are often at a premium with all of the smart devices requiring power. The CC75 charger features a USB outlet that allows you to plug in a USB charging cord and power your devices. It also features 4 individual LED charge indicator lights. Once batteries are installed, the charger LED lights will turn on indicating the batteries are charging. If a non-rechargeable battery is installed, the LED will flash indicating the battery cell should be removed. After a battery is fully charged, the LED light turns off for that cell. Ideal for use at home, in the office, or on the road, this Panasonic CC75 charger is a convenient way to recharge any combination of up to four AA or AAA Ni-MH Eneloop Pro, Eneloop, or conventional Panasonic Ni-MH rechargeable batteries.