Excelltec 9V Battery (PP3 / 6LR61 / MN1604) – Heavy Duty Zinc Carbon – Smoke Alarm & Household Use. This 9 volt battery (also known as PP3, 6LR61 or MN1604) is ideal for low-to-moderate drain devices where consistent, dependable power is required.
This product would be ideal for users who require heavy-duty batteries for smoke alarms.
