Kind of good video but please remeber about 2 things. 1) do not leave sharp/square edges above positive/+ because if it bends , it could do short circuit ( 90% of the battery shell is negative ). 2) Never solder wire obove edge of the positive battery ring, it will damage the insulator, always solder on middle of the battery cell.
Manufacturing using new batteries ultimately saves money.
Kind of good video but please remeber about 2 things. 1) do not leave sharp/square edges above positive/+ because if it bends , it could do short circuit ( 90% of the battery shell is negative ). 2) Never solder wire obove edge of the positive battery ring, it will damage the insulator, always solder on middle of the battery cell.
thank you There is no problem as long as you follow the manual in the master book.