High quality 1.5v AA/ LR6 am3 alkaline battery
Pick up 5pcs battery from production line every hour daily, put the battery into high temperature and high humidity chamber. Setup 60ºC and 97%rh, 18hrs/day last 20 days, test leakage with phenolphthanlein indicator. 0% leakage is acceptable.
CR2032 CR2025 CR2016