Energizer Industrial EN93 C Alkaline Battery (1.5V)

The EN93 is a bulk-pack, professional C-size alkaline battery designed for medium-drain equipment that must work reliably when called upon. It offers dependable output, leak-resistant construction, and long shelf life for maintenance, safety, and operations teams.

When to Choose It

• Use if you need simple, single-use power for shared devices, emergency kits, or equipment that sits in standby for months.
• Use for medium, steady loads (e.g., 50–300 mA) like flashlights, test instruments, and portable meters.
• Avoid if your devices are used daily with high drains—rechargeable NiMH C cells may lower total cost of ownership.
• Avoid for sustained sub-freezing environments; alkaline performance drops in extreme cold. Check device guidance for cold-weather alternatives.

Common Applications

• Industrial and emergency flashlights/lanterns
• Medical and facility diagnostics (non–life-support), thermometers, sphygmomanometers
• Electronic test meters and sensors
• Audio equipment, beacons, and portable tools designed for C cells

Specs and Compatibility

Chemistry	Alkaline (Zn/MnO₂)
Size	C
Standards	IEC LR14, ANSI 14A; Cross‑references: EN93 / E93, MN1400
Nominal Voltage	1.5 V
Operating Temperature	Approx. −18°C to 55°C (performance is best at 0–40°C)
Shelf Life	Up to 10 years when stored at room temperature
Packaging	Bulk packs for organizational use

Runtime Planning Examples

Actual runtime varies by device design, load, cutoff voltage, and temperature. Use these rough estimates for planning:

• Two-cell flashlight drawing ~250 mA: about 12–24 hours of usable light.
• Single-cell instrument drawing ~50 mA: about 80–150 hours.
• Low-power sensor at ~5 mA: roughly 30–60 days of continuous operation.

Features and Trade-offs

• Leak-resistant design helps protect equipment during long deployments.
• Long shelf life supports bulk purchasing and readiness programs.
• Consistent, predictable performance for medium-drain devices.
• Trade-offs: not rechargeable; reduced output in cold weather; voltage sag increases at very high loads compared with lithium chemistries.

Storage and Handling

• Store cool, dry, and in original packaging (ideally 10–25°C). Rotate stock first-in, first-out.
• Do not mix old and new cells or different brands/types in the same device.
• Install with correct polarity; replace all cells in multi-cell devices at the same time.
• Remove batteries from devices if they will not be used for extended periods.
• Do not recharge, disassemble, or incinerate. Recycle according to local regulations.

Alternatives

• Rechargeable NiMH C (1.2 V): best for high-use devices; confirm your device tolerates the lower nominal voltage.
• Lithium primary (various formats): offers better low-temperature performance, but voltage and size may differ; use only if explicitly specified by the device manufacturer.

FAQ

Is EN93 different from retail Energizer E93?

EN93 is the industrial (bulk) version of Energizer’s C alkaline battery. Performance specs are comparable; industrial packs reduce retail packaging and streamline procurement.

Is it rechargeable?

No. EN93 is a primary (single-use) alkaline battery. Use NiMH C cells if you need rechargeability.

Can I mix these with other brands or rechargeable batteries?

No. Mixing chemistries, brands, or old/new cells can cause leakage or poor performance.

How should I store spares?

Keep sealed in a cool, dry place. Avoid extreme heat or freezing, and rotate stock regularly.

Are they suitable for cold-weather use?

They will work but with reduced capacity and voltage at low temperatures. For frequent sub-freezing use, consult your device maker for lithium-compatible options.