lithium ion battery cell ready for production 48v 60v 72 lithium battery

All battery cell storage in warehouse , we will test all the battery cell before go into production assembling . all the battery need past all the test and been ensure that A grade level for the enough capacity , the battery cell need pass many strict test which ensure the best consistency of voltage , capacity , internal   resistance , etc . which is very important to what we are producing and supply our client with best performance quality lithium ion battery pack . that is why we can allow client with 36 months warranty , while other factory only 1year warranty .