Procell Constant D (PC1300) Industrial Alkaline Battery

Procell Constant D (PC1300) is a 1.5V, single-use alkaline D cell built for professional devices with steady, low-to-moderate current draw. It prioritizes long service life, consistent voltage, and leak-resistant construction, making it a dependable choice for facilities, property management, and commercial equipment.

Quick specs and compatibility

Size / standard	D cell — IEC LR20, ANSI 13A
Chemistry	Alkaline (Zn/MnO₂), non-rechargeable
Nominal voltage	1.5 V
Typical use	Low/steady drain and long standby
Dimensions	Approx. 61.5 mm length x 33.2 mm diameter (standard D)
Operating temp (typical for alkaline)	About -4°F to 130°F (-20°C to 54°C); check datasheet for exact range

When to choose Procell Constant D

• Devices with continuous or standby loads where longevity matters: touchless faucets and soap/sanitizer dispensers, air fresheners, beacons, clocks/timers, and some security panels.
• Equipment that remains installed for months to years and where battery swaps are costly or disruptive.
• Environments needing leak-resistant, industrial-grade cells supplied in bulk for maintenance teams.

When to consider alternatives

• High or pulsed drains (e.g., high-output flashlights, motorized mechanisms, sirens): consider Procell Intense D (designed for demanding, spiky loads).
• Very frequent cycling and rapid recharge needs: consider rechargeable NiMH D cells (note the lower nominal voltage of ~1.2 V and ensure device compatibility).
• Long-term remote sensors requiring multi-year life at very low currents in harsh conditions: some systems use specialty lithium cells at different voltages—verify device specs before switching chemistry.

Estimating runtime

To approximate runtime, use: Runtime (hours) ≈ Battery capacity (mAh) ÷ Device load (mA).

Notes:

• Typical D alkaline capacity under low drain is often in the 12,000–18,000 mAh range, but varies by brand, load, and temperature. Refer to the product datasheet for precise curves.
• Example: A device averaging 0.5 mA could run roughly 24,000–36,000 hours (2.7–4.1 years) on a fresh cell, limited by shelf life, duty cycle, and environment.
• Cold temperatures and higher pulse currents reduce usable capacity; design with margin.

Best practices for longer life

• Replace all cells in multi-battery devices at the same time; do not mix old and new.
• Do not mix chemistries or brands within the same device.
• Store spares in a cool, dry place (around 59–77°F / 15–25°C). Do not refrigerate or freeze.
• Check date codes and rotate stock (first in, first out).
• Inspect equipment for corrosion or gasket damage during scheduled maintenance.

Safety and disposal

• Non-rechargeable: never attempt to recharge alkaline cells.
• Avoid short circuits; keep cells in original packaging or cover terminals during transport.
• If a leak occurs, wear gloves, wipe residue with a damp cloth, and dispose of affected cells and wipes per local rules.
• Disposal varies by location. Many U.S. municipalities accept alkaline batteries in regular trash, but recycling or household hazardous waste programs may be preferred. Check local regulations.

Procurement notes

• Available in contractor/bulk packs to reduce packaging waste and simplify inventory.
• Verify the model code PC1300 and device fit (D/LR20) before ordering.
• For mixed fleets, stock both Constant (for steady loads) and Intense (for pulsed loads) to match devices appropriately.

FAQ

What devices are a good fit for Procell Constant D?

Devices with steady, low-to-moderate current draw and long replacement intervals—such as touchless dispensers, air fresheners, certain security panels, low-power beacons, and building automation peripherals that accept D cells.

How is Procell Constant different from Procell Intense?

Constant is optimized for long life in steady, low/predictable loads. Intense is tuned for high or pulsed drains where current spikes are common (e.g., heavy-duty flashlights or motorized mechanisms).

Can I replace a D alkaline with a rechargeable D?

Possibly, if the device supports the lower nominal voltage of NiMH (~1.2 V) and its charging/maintenance profile. Some devices will show low-battery warnings sooner with NiMH. Check the device manual.

What operating temperatures are safe?

Most alkaline cells operate roughly from -4°F to 130°F (-20°C to 54°C). Performance declines at temperature extremes; confirm the exact range in the product datasheet for your environment.

How should I store spare batteries?

Keep them in original packaging in a cool, dry place away from direct sun and heat. Do not refrigerate or freeze; condensation can cause issues.