Description
Energizer Ultimate 9V lithium batteries deliver long-term power for smoke detectors, professional audio equipment, medical devices and safety systems. Sold as a 10-pack of L522 (PP3) format cells, each battery uses lithium chemistry to provide higher energy density and longer runtime than alkaline equivalents, whilst being 33% lighter in weight.
Designed for both commercial and residential use, the batteries operate reliably across a temperature range from -40°C to 60°C, making them suitable for outdoor security systems, cold-storage facilities and HVAC control panels as well as standard indoor applications. The 25-year shelf life allows bulk purchasing for maintenance teams, facilities managers and contractors who need to keep stock on hand for scheduled replacements or emergency call-outs.
The L522 format is the standard UK 9V battery size, with snap terminals compatible with most smoke alarms, carbon monoxide detectors, guitar pedals, wireless microphones and handheld meters. The lithium construction holds voltage more consistently under load compared to alkaline batteries, reducing the frequency of low-battery warnings in smoke alarms and extending intervals between replacements in professional equipment. The 0.37kg total weight for the 10-pack makes this a practical option for stocking vans, tool kits and emergency supply cupboards.
Specification
| Weight (KG) |
0.37 |
| Battery Range |
Energizer Lithium |
| Cell Size |
9V |
| Cell Composition |
Lithium |
Frequently Asked
What's the shelf life of these batteries?
Energizer Ultimate lithium batteries carry a 25-year shelf life when stored at room temperature. This makes them suitable for emergency supply kits, seasonal equipment and bulk purchasing for future use.
Can these be used in smoke alarms?
Yes. The L522 (9V PP3) format is the standard size for most UK smoke alarms and carbon monoxide detectors. The lithium chemistry provides longer life between replacements compared to alkaline batteries, and holds voltage more consistently, reducing nuisance low-battery chirps.
What temperature range do they operate in?
These batteries function from -40°C to 60°C, making them suitable for outdoor security equipment, cold-storage monitoring, HVAC controls and other applications where standard alkaline batteries would struggle in temperature extremes.
Are they rechargeable?
No. Energizer Ultimate lithium batteries are single-use primary cells and must not be recharged. Attempting to recharge a non-rechargeable lithium battery can cause overheating or leakage.