Energizer 9V PP3 Alkaline Power Battery (1 Pack)

The Energizer 9V PP3 is a single alkaline battery designed for smoke alarms, wireless microphones, medical monitoring devices, guitar effects pedals and professional audio equipment. The PP3 snap-connector format fits standard 9V battery compartments and delivers consistent voltage output across the battery's discharge cycle.

Alkaline chemistry provides higher energy density than carbon-zinc alternatives, making it better suited to devices with sustained moderate-to-high current draw such as active smoke detectors, wireless transmitters and portable audio processors. The battery holds charge for up to five years in storage when kept at room temperature, making it practical for emergency preparedness kits, spare stock for touring musicians, and backup supplies for care facilities.

Each battery measures 48mm × 26mm × 17mm and weighs 50g. The snap terminals are nickel-plated to resist corrosion during long-term storage. Energizer's Alkaline Power range sits between their basic carbon-zinc cells and the premium lithium range, offering a balance of shelf life, discharge performance and cost for applications where lithium's extended temperature range and weight saving are not required.

What devices typically use 9V PP3 batteries?

Smoke alarms, carbon monoxide detectors, wireless microphone transmitters, guitar effects pedals, active bass guitar preamps, medical glucose monitors, multimeters and some transistor radios. Any device with a 9V snap-connector compartment accepts this format.

How long does the battery last in a smoke alarm?

Battery life in smoke alarms varies with the alarm's design and whether it includes photoelectric or ionisation sensing. Most alkaline 9V batteries provide 12-18 months of service in a typical household smoke alarm with low-battery warning functionality. Replace when the alarm chirps.

Can I use this in rechargeable 9V device holders?

No. This is a single-use alkaline cell and must not be placed in a charger designed for NiMH or lithium rechargeable 9V batteries. Attempting to charge an alkaline battery can cause leakage or rupture.

What's the shelf life if stored in a drawer?

Energizer rates the Alkaline Power 9V at a five-year shelf life when stored at room temperature (around 20°C). Storage in a fridge can extend this slightly, but condensation risk on removal means room-temperature storage in a dry location is simpler and equally effective.