every battery is tested as it gets to the end of the production line
The worst ones get labled with the brand names they send to cheap stores like Amazon , Walmart, Lowes etc
Now occasionally there is not enough junk bateries so they lable some top shelf ones with the cheap stickers ,
Thus you get all the brain dead morons telling every one it is a conspiracy abd the $ 10 batteries are exactly the same as the $ 100 batterie s frm mower shops
Now I in 1000 might be but most are junk that will be hard put to outlast their warranty period .
#3
shurguywutt
I have brought a multimeter to the store and bought the battery with the highest voltage on the rack.