Disposable CR9V 1000mAh Lithium Manganese Dioxide Battery for Smoke Detector Fire Alarm
Summary of CR9V 1000mAh
Disposable CR9V 1000mAh Lithium Manganese Dioxide Battery for Smoke Detector Fire Alarm is a non-rechargeable 9V primary lithium cell engineered for long-term, unattended safety devices. From a cell design and factory manufacturing perspective, this battery focuses on leak-resistant construction, low self-discharge, and stable voltage output over an extended shelf and service life. Within the CR9V category, its 1000mAh capacity represents the upper practical limit under current Li-MnO₂ chemistry, enabling longer alarm operation without increasing size or complexity.
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Main Parameters:
Model: CR9V
Chemistry: Lithium Manganese Dioxide
Rechargeable: Disposable Battery
Nominal Voltage: 9.0V
Nominal Capacity: 1000mAh
Nominal Energy: 9Wh
Energy Density: 225Wh/kg
Operating Temperature Range: -40~85°C
Storage Temperature Range: 5℃～40℃
Standard Discharge Current: 5mA
Maximum Continuous Discharge Current: 800mA
Maximum Pulse Discharge Current: 1000mA
Dimensions: 48.5*26.5*17.5mm
Weight: 40g
Key Features – CR9V Lithium
🛡️ Leak-Resistant Design for Long-Term Safety Devices
Leakage is one of the most common failure modes in smoke detectors and fire alarms. This CR9V battery adopts hermetically controlled sealing, corrosion-resistant internal materials and electrolyte formulations optimized for long storage. These measures significantly reduce the probability of leakage during both storage and end-of-life discharge, making the battery suitable for ceiling-mounted or enclosed alarm housings where inspection is infrequent.
⚡ Stable Output for Reliable Alarm Performance
Smoke detectors and fire alarms depend on stable voltage rather than high discharge rates. This CR9V battery is engineered to deliver flat discharge and minimal voltage drop during normal operating life. This stability ensures sensors, buzzers, and control circuits operate within design parameters throughout the battery’s usable life.
🔋 High Energy Density
With an energy density reaching up to 225Wh/kg, this CR9V lithium battery significantly exceeds alkaline equivalents. For engineers and procurement teams, this means more usable energy and longer operational time.
⏳ Large Capacity: 1000mAh in CR9V Format
Within the CR9V lithium manganese dioxide category, 1000mAh represents the highest commonly achievable capacity without compromising safety or form factor compatibility. This directly translates to:
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Extended replacement intervals
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Reduced maintenance labor
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Lower total cost of ownership in large-scale installations
❄️ Low Self-Discharge for Long Storage
This battery features low self-discharge characteristics, allowing it to retain most of its stored energy even after prolonged storage. In factory testing and industry data, Li-MnO₂ CR batteries typically lose only a small percentage of capacity per year under proper storage conditions.
📦 Long Shelf Life
With controlled internal chemistry and sealing, the battery supports a shelf life of up to 10 years when stored under recommended conditions. This is especially important for fire alarm, smoke detectors and other devices.
Application:
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Smoke Detectors
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Wireless Alarm Sensors
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Memory Backup Systems: CMOS memory, RTC (Real-Time Clocks)
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Utility Meters: Electricity, gas, and water meters
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Remote Monitoring Devices: GPS trackers, marine buoys
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Automotive Electronics: Tire Pressure Monitoring Systems (TPMS)
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Military and Aerospace Equipment: Night vision devices, communication systems
⚠️ Commonly Overlooked Points & Misconceptions
🧠 Important technical clarifications
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CR9V is not equivalent to alkaline 9V
Despite similar shape, lithium CR9V batteries differ internally and electrically. Mixing specifications can cause device misbehavior. -
Higher capacity does not mean higher current
The 1000mAh rating supports longer runtime, not high-power loads. -
Primary lithium batteries are not rechargeable
Attempting to recharge Li-MnO₂ cells is unsafe and can cause failure. -
Shelf life depends on storage conditions
Excessive heat accelerates self-discharge, even in lithium systems.
❓ FAQ – Frequently Asked Questions
Q1: Is this battery rechargeable?
A: No, this is a disposable (primary) Lithium battery. It is designed for long-term, low-drain applications. Attempting to recharge this battery is dangerous and may cause leakage or damage to your charger.
Q2: Can this CR9V replace a standard Alkaline 6LR61 9V battery?
A: Yes. This battery is a direct 1:1 replacement for any device using a standard 9V (6LR61, 6F22, or 1604A) battery.
Q3: Why is Li-MnO2 better than Alkaline for fire alarms?
A: Li-MnO2 batteries provide a stable voltage discharge curve, meaning they maintain high performance until the very end of their life. They also perform better in extreme temperatures and are significantly lighter than alkaline counterparts.
Q4: Is this battery environmentally friendly?
A: Our CR9V Lithium batteries contain 0% Mercury and 0% Cadmium, making them safer for the environment than older battery chemistries. Please follow local regulations for lithium battery disposal/recycling.
Q5: What is the difference between this “Li-MnO2” and “Li-ion” 9V batteries?
A: This is a Primary Lithium battery. It is designed for maximum safety and a 10-year life. Li-ion (Rechargeable) 9V batteries have much higher self-discharge rates (losing power even when not in use) and are generally not recommended for life-safety devices like smoke alarms.
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