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 simultaneously. To charge 9V blocks, you can charge 1 or 2 blocks at the same time. This charger is white and can be used worldwide (100 to 240 V). When your batteries are fully charged, the charger automatically shuts 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 solder joints, it is less harmful to the environment. For added safety, the device includes a free 5-year warranty.