1)  Firstly, confirm your application,which product or industry you would like to use in. Such as gateways & set-top boxes,medicine instrument,massage gun, back massage,Tools Li-ion Battery Charger ,Intelligent bathroom device,massage chair,Cordless Drill Driver 20V,Humidifier charger and so on.

2) Secondly, confirm the voltage and current of your industry products,match with the machine or equipment you try to use in.Then find out the suitable match power adapter or battery charger.

3) Confirm you gonna to sell the power supply and Li-on battery to which country,if domestic market then the power adapter and charger will need the CCC,CQC certificates,if USA market,the power adapter and battery charger need the ETL certificate and UL Certificates,if the power supply and charger would like to sell to Euro market then you may need the power adapter and charger have CE,GS,ROHS,BS and so on.If the power adapter and battery would like to sell to Korea,then will need KC certificate, for Japan market is PSE certificate.

4) Finally confirm the DC head size and length of the extension cable,the chargeable connector.

5) Confirm it the EMC level, Eahunt company enhancement have focused on performance,yielding high-efficiency types that support fast charging but consume less power. Welcome contact us to know more!