This single GP Batteries PP3 (9V / GP1604A) battery is ideal for use in a wide range of common household applications. More often than not these will be used in Smoke Alarms and Wireless Microphones. They can also be used however, in certain Torches and Medical Equipment.
The GP1604A is part of the GP Batteries Super Alkaline range, which comes supplied as a bulk cell. These cells are hermetically sealed which means that they are protected against any leakage.
These batteries can be stored for years with little impact to the performance, and are capable of operating in a wise temperature range.
These may also be known as 6LR61, 522 or 6AM6 batteries.