Bosch Cordless Saw Advanced Cut (2.5 Ah Battery 18 Volt System, 18 In)(the plug charger is EU, if used in USA needs a plug adapter for the charger) - Amazon.com
Bosch Dual 18V and 12V Battery Charger - Dual-Bay GAX1218V-30
BOSCH Genuine GAL 1210CV Charger (To Fit: Bosch PSR 10.8 Li Drill) | eBay