With the universal charger BQ CC15, you can charge AA, AAA, C, D, and 9V batteries. When charging AA, AAA, C, or D batteries, you can insert 1 to 4 batteries at the same time. To charge 9V blocks, you can charge 1 or 2 blocks simultaneously. This charger is white and can be used worldwide (100 to 240 V). When your batteries are fully charged, the charger automatically turns off (DeltaV). The charger also features non-rechargeable battery detection: it will not turn on if you insert a non-rechargeable battery. Thanks to lead-free soldering, it is less harmful to the environment. For added safety, the device comes with a free 5-year warranty.