Allfei 100% inspection of the incoming material and we make sure 100% use A grade battery. Here we show you what is A/B/C grade battery: A grade: all specification of item passed UL certificate. (Our quality), B grade: parts of spec. of item meeting UL certificate, and most are under standard. It is not safe. (Cheaper one), C grade: used battery,it is easy burn out or explode (Cheaper one); Aging test, two cycles,double charging,double...
Detail >>
