Duracell Coppertop 9V Alkaline (MN1604)

Duracell Coppertop 9V Alkaline (MN1604)

Duracell Coppertop 9V is a single-use alkaline battery designed for reliable, steady power in common 9V devices such as smoke alarms, portable radios, multimeters, and guitar pedals. It offers long shelf life, consistent performance, and broad compatibility for home and workplace use.

When to choose this battery

• Best for: Smoke and CO alarms that specify 9V alkaline, handheld radios, wireless mics in short sets, test instruments, toys, and effects pedals.
• Choose if: You want dependable performance, easy availability, and low maintenance for general use.
• Consider alternatives if: You need very long standby (lithium 9V), performance in extreme cold/heat (lithium 9V), or frequent daily cycling (rechargeable NiMH 9V).

Estimated runtimes (typical)

• Smoke alarm (standby): about 6–12 months; test monthly and replace at the first low-battery chirp.
• Wireless mic/transmitter: roughly 4–8 hours depending on power setting and RF strength.
• Portable radio: around 10–20 hours at moderate volume.
• Digital multimeter: weeks to months with intermittent use.

Actual runtime varies by device draw, temperature, and cut-off voltage.

Key features

• Chemistry: Alkaline (manganese dioxide)
• Nominal voltage: 9 V
• Typical capacity: ~550–600 mAh at low drain (per IEC methods; device-dependent)
• Shelf life: up to 5 years when stored at room temperature
• Operating temperature: about -4 to 130 °F (-20 to 55 °C)
• Size code: 9V / MN1604
• Dimensions (approx.): 48.5 × 26.5 × 17.5 mm
• Weight (approx.): 45 g
• Leak-resistant design to help protect devices

Compatibility notes

• Use in devices that specify 9V alkaline batteries. Check your manual for chemistry requirements (some alarms specify lithium 9V only).
• Not rechargeable. Never attempt to recharge an alkaline 9V.
• Rechargeable 9V batteries often have 8.4 V or 9.6 V nominal; some devices may perform differently with those. Verify your device’s tolerance before switching chemistries.

Usage and care tips

• Install with correct polarity and press the test button on alarms after replacement.
• Do not mix old and new batteries or mix brands in the same device.
• Remove batteries from devices that will sit unused for 30+ days to reduce leak risk.
• Store in a cool, dry place (59–77 °F). Do not freeze or expose to heat.
• Cover 9V terminals during storage or transport to prevent short-circuiting. Do not carry loose 9V batteries with keys or coins.

Buying guide

• Single or 2-pack: Occasional replacements (alarms, a radio).
• 4–12 pack: Multiple devices or annual alarm refresh for a home or office.
• Check date codes: Choose the latest expiration for maximum shelf life, especially for emergency kits.

Alternatives

• 9V lithium (Li‑FeS2): Longer standby, lighter weight, and better cold/heat performance; higher upfront cost. Good for alarms and outdoor gear.
• Rechargeable 9V NiMH (8.4 V or 9.6 V): Cost-effective for frequent use in pedals or wireless systems; requires a compatible charger and device tolerance.

Safety and disposal

• Do not short, crush, or incinerate. Keep away from children and pets.
• If a battery leaks, use gloves and follow local cleanup guidance; replace the device’s battery compartment if damaged.
• Recycle where available (household hazardous waste sites, retail drop‑offs). Tape terminals before disposal to prevent shorts.

FAQ

Is this battery rechargeable?

No. Duracell Coppertop 9V is a single-use alkaline battery. Do not attempt to recharge it.

How often should I replace a 9V in my smoke alarm?

Follow the alarm manufacturer’s instructions. Many recommend replacing alkaline 9V batteries annually and any time the alarm chirps. Test monthly.

Will it work in carbon monoxide alarms?

Yes if the alarm specifies a 9V alkaline. Some models require lithium 9V—check the label inside the battery compartment or the manual.

What storage conditions extend shelf life?

Store at room temperature in a dry place, in original packaging, and keep terminals covered. Avoid heat, freezing, and humidity.

Why does my wireless mic drain 9V batteries quickly?

Wireless transmitters draw relatively high current. Expect only a few hours of runtime with alkaline. For long sets, consider lithium 9V or a compatible rechargeable system.