Installed the batteries in my Panasonic cordless phone 15 days back. Initially charged the batteries for 10 hours +. Subsequently, after charging the batteries fully, they become dead after talking for 5 minutes only. Spoke to your customer care who gave me Panasonic number. Panasonic says they cannot do anything for batteries purchased online. It’s a loss of Rs 445/-. Please refund me the money and take the batteries back.