Required wall socket adapter/s for Custom International Smart Charger for Li-ion Batteries (SKU SP-C2S3A). The custom smart charger is sold separately. Customers must choose one (1) wall socket adapter or the SP-C2S3A charger will not work. Choose from four (4) wall socket adapter types: AU, EU, UK or US. Scroll through available socket adapter images (at left). Each wall socket adapter sold separately.