Samsung both literally and figuratively can’t afford another battery debacle like it suffered with the Galaxy Note 7. That particular smartphone had two recalls for battery overheating issues, which led a huge number of fires. To keep the new Galaxy Note 8 from suffering the same fiery fate as the Note 7, Samsung is doing a lot of testing

Source: Hot Hardware – Samsung 8-Point Battery Safety Check To Ensure Galaxy Note 8 Won’t Suffer The Same Fiery Fate As Note 7