Energizer Industrial EN91 AA (LR6) Alkaline Battery

Professional-grade AA batteries for high-volume, everyday and moderate-drain devices in workplaces and field kits.

At a glance

• 1.5 V alkaline chemistry; non-rechargeable
• Leak-resistant construction to help protect equipment
• Long shelf life (up to 10 years at room temperature; check date code)
• Bulk packaging for efficient stocking and reduced waste

When to choose EN91

• Use for: flashlights, meters, leak detectors, sensors, clocks, wireless peripherals, and two-way radios that specify alkaline AA.
• Choose instead:
  • Lithium AA (e.g., Energizer L91) for extreme cold/heat, very high-drain devices, or lighter weight.
  • NiMH AA rechargeables (1.2 V, low self-discharge) for devices used and recharged frequently.
• Avoid for: critical life-support medical devices, or equipment that explicitly requires lithium or rechargeable cells.

Key specifications

Size	AA (LR6)
Chemistry	Alkaline, zinc–manganese dioxide
Nominal voltage	1.5 V
Operating temperature	Approx. 0°F to 130°F (−18°C to 55°C)
Shelf life	Up to 10 years at ~68°F/20°C (verify date code)
Rechargeable	No

Typical runtime guidance

Actual runtime varies by device load and cutoff voltage. Use these planning estimates per cell:

Approx. load	Example device	Estimated runtime per cell
25 mA	Sensor, wall clock	80–120 hours
100 mA	LED flashlight (low)	15–30 hours
300–500 mA	Radio, flashlight (high)	3–8 hours

For devices using multiple cells in series, total runtime is limited by the first cell to reach cutoff—replace the full set together.

Storage and handling

• Store cool and dry; avoid heat and direct sun. Do not freeze.
• Keep in original packaging or a battery case to prevent short circuits.
• Do not mix old and new batteries or different brands/chemistries in one device.
• Remove batteries from devices stored long term to reduce leak risk.

Procurement notes

• Industrial (EN91) batteries are functionally similar to consumer alkaline AAs but ship in bulk contractor packs for easier fleet maintenance.
• Check the date code and rotate stock first-in, first-out. Many facilities target 3–5 years of remaining shelf life for issue.

Alternatives and compatibility

• Compatible with devices that specify AA/1.5 V alkaline.
• For high-drain or cold-weather duty, lithium primary AA can deliver longer runtime and better low‑temperature performance.
• If a device is used daily and supports 1.2 V cells, NiMH rechargeables can lower total cost of ownership.

FAQ

Is EN91 the same as retail Energizer Max?

Performance is comparable for most uses. The Industrial line is optimized for bulk distribution and leak‑resistant construction; it typically omits retail blister packaging.

Can I recharge EN91 batteries?

No. EN91 is a primary (single‑use) alkaline battery. Attempting to recharge can cause leakage or rupture.

How should I dispose of used cells?

Follow local regulations. In many U.S. areas, alkaline cells may be disposed of in household trash, but battery recycling is recommended where available.

Do alkalines work in cold weather?

They function down to about 0°F (−18°C), but capacity drops in the cold. For reliable performance below freezing, use lithium AA.