Energizer 9V Alkaline Batteries - 2 Pack - Long Lasting Power for Smoke Detectors, Toys & Electronics

A shelf life of 5 years makes these alkaline batteries ideal for smoke detectors. The amount of power is about 550 mAHrs. Rechargeable 9-volt batteries are available with 1300 mAHrs. Not sure which is better for a given application. That is, how long does a Li-ion battery hold its charge if not in use?As DescribedOnly thing I didn't like is there is no Clear Expiration Date. Only thing I found in a number on the bottom of the battery that might be manufacturing date! According to Internet Data. The shelf life is 5 years. Why don't the Factiry simply print the Expiration date to begin with?Seems to work okayCan't beat the price asbi can't buy them cheaper anywhere else.It a good buy for your moneyAlways goodgoodGreat product! Fully met my requirements.The best batteriesEs hat mir gefallen