AC DC power adapter can be used to charge the battery products too,which called battery charger.  Battery charger is a rechargeable battery of electronic equipment used in battery packs, electric vehicles, power tools, laptops, digital and small portable electronic equipment.  According to the connection mode,battery chargers can be divided into wall mount type and desktop type;  According to the battery type,battery chargers can be divided into nickel cadmium battery charger, nickel metal hydride battery charger, nickel zinc battery charger, lead-acid battery charger and lithium battery charger;  According to the function,battery chargers can be divided into special charger and universal charger.

The safety standards of battery chargers are IEC60335-1 and IEC 60335-2-29 accordingly to the CB certification standards which issued by the International Electrotechnical Association. Battery chargers that comply with safety regulations is first recommended if you want to buy a safety chargers.