Energizer L92 Batteries (AAA Ultimate Lithium)

Energizer L92 AAA Ultimate Lithium (L92)

Lightweight, leak-resistant AAA primary lithium cells designed for reliable power in high-drain and cold-weather devices. Ideal for headlamps, wireless audio, compact meters, sensors, and mission-critical kits.

When to choose L92

• You need dependable starts in extreme cold or heat (-40°F to 140°F / -40°C to 60°C).
• Your device draws moderate to high current (e.g., bright headlamps, wireless transmitters, inspection lights).
• Gear may sit for months and must be ready (up to 20-year shelf life, very low self-discharge).
• Weight matters—each cell is about 7.6 g, reducing headlamp bounce and handheld fatigue.

When to consider alternatives

• Frequent daily cycling: use low-self-discharge NiMH rechargeables for lower cost per use.
• Devices with built-in charging or that specify rechargeable chemistries: follow the manual.
• Ultra-low-cost, rarely used devices stored at room temperature: premium alkaline can be sufficient.

Performance highlights

• Chemistry: Lithium Iron Disulfide (Li‑FeS₂), primary (single-use).
• Voltage: 1.5 V nominal with a stable, flat discharge profile under load.
• Temperature range: -40°F to 140°F (-40°C to 60°C).
• Shelf life: up to 20 years when stored properly.
• Leak-resistant construction helps protect sensitive equipment.

What to expect in use

• More consistent brightness vs alkaline as cells discharge (flatter voltage curve).
• Improved cold-weather runtime vs alkaline; better cold-start behavior for sensors and lights.
• In many AAA headlamps, expect noticeably longer runtime than alkaline—often 1.2×–1.5×, especially below freezing (actual results vary by device and mode).

Typical applications

• Lighting: compact headlamps, penlights, inspection lights.
• Pro audio & film: bodypack transmitters, in-ear monitors, timecode devices.
• Tools & meters: laser levels, compact multimeters, leak/gas detectors.
• Building & security: door/window contacts, PIR motion sensors, keypads.
• Medical & lab: diagnostic tools where AAA primary cells are specified.

Pack sizes and buying guidance

Match pack size to consumption to reduce waste and simplify inventory:

• Carded retail: 2, 4, 8, 10, or 12 cells for personal kits and small teams.
• Bulk cartons: 24, 36, 48, 60, or 72 cells for departments and regular replacements.
• Master cases: 96, 144, 240, or 576 cells for multi-site maintenance schedules.

Deployment tips

• Standardize labeling: mark bins “AAA Lithium (L92)” to prevent mixing with alkaline/NiMH.
• Replace all cells in multi-battery devices at the same time for best performance.
• Stage small carded packs in go-bags; keep bulk in shop stock for routine swaps.
• For winter operations, pair L92 with cold-rated headlamps and sensors for reliable starts.

Compatibility notes

• Suitable for most devices that accept 1.5 V AAA cells. Always confirm in the device manual.
• Do not attempt to recharge. Never mix with other chemistries or old/new cells.
• Some battery gauges calibrated for alkaline may drop suddenly near end-of-life due to L92’s flatter discharge curve.

Quick comparison (AAA)

Storage and safety

• Store cool and dry in original packaging; avoid shorting the terminals.
• Install with correct polarity; remove depleted cells promptly.
• Recycle or dispose per local regulations. Follow carrier rules when shipping primary lithium batteries.

FAQs

• Can L92 replace any AAA battery? Most devices that take 1.5 V AAA cells work well with L92. Check your manual for chemistry restrictions.
• Are L92 batteries rechargeable? No. They are primary (single-use) lithium cells and must not be recharged.
• How do they compare to alkaline in headlamps? Expect more stable brightness and longer runtime, particularly in cold conditions.
• Do bulk packs perform differently than retail packs? Performance is the same; bulk packaging reduces waste and simplifies inventory.
• How long can they sit unused? Up to 20 years of shelf life when stored properly, with very low self-discharge.