Duracell Ultra MX2500 AAAA 1.5V Alkaline Battery
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1.5V AAAA Alkaline Battery engineered for precision electronics and compact high-drain devices.
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Reliable Alkaline Chemistry delivering consistent, long-lasting power output.
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MX2500 / LR61 Size Compatibility for specialty electronics requiring AAAA format batteries.
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Slim Cylindrical Design measuring approximately 1.65 in height × 0.33 in diameter (42.5 × 8.3 mm).
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Lightweight Construction at approximately 6.5 grams per battery for compact device applications.
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Duracell Ultra MX2500 AAAA 1.5V Alkaline Battery
The Duracell MX2500 AAAA Alkaline Battery is a 1.5-volt specialty power solution designed for compact electronic devices that require a slim, high-performance energy source. Built with dependable alkaline chemistry, it provides consistent and reliable power for precision equipment and everyday specialty applications.
Commonly referenced as MX2500 or LR61, this AAAA battery format is widely used in devices such as stylus pens, medical instruments, key fobs, and other compact electronics requiring stable voltage output in a narrow cylindrical design.
Measuring approximately 42.5 mm in height and 8.3 mm in diameter, and weighing about 6.5 grams, the MX2500 is engineered for devices where space efficiency and dependable performance are critical. Its alkaline construction ensures long shelf life and steady energy delivery in both professional and consumer applications.
MX2500 Specifications
- Model: MX2500
- Size: AAAA
- Chemical System: Alkaline-Manganese Dioxide (Zn/MnO₂)
- Nominal Voltage: 1.5V
- NEDA / ANSI: 25A
- IEC: LR8D425
- Terminal Type: Flat
- Nominal Internal Impedance: 240 mΩ @ 1 kHz
- Operating Temperature Range: -20°C to 54°C
Capacity & Performance
- Delivered Capacity: Load-dependent (see discharge curves in spec sheet)
- Typical Power Drains Tested (20°C): 100 mW, 250 mW, 500 mW, 750 mW
- Voltage Cutoff Reference: 1.0V (standard performance comparison)
- Low-Rate Example: 5 mA continuous with 50 mA pulse (1 sec)
- High-Rate Example: 50 mA continuous with 100 mA pulse (1 sec)
- Energy vs Power Drain: Performance curves show stable voltage plateau before gradual decline (see charts, page 1–2 of spec sheet)
Physical Specifications
- Nominal Weight: 6.0 g
- Nominal Volume: 2.02 cm³
- Height: 42.5 mm max (41.5 mm min)
- Diameter: 8.3 mm max
- Positive Terminal Protrusion: 0.7 mm min
- Body Diameter (minimum reference area): 3.8 mm max
Applications
- Medical devices
- Stylus pens
- Laser pointers
- Glucose meters
- Security devices
- Small electronics requiring compact high-energy alkaline cells
| Diameter | 8.3 mm |
|---|---|
| Height | 42.5 mm |
| Condition | New |
| Country of Manufacture | China. Country of origin is subject to change |
| Brand | Duracell |
| Battery Size | AAAA |
| Chemistry | Alkaline |
| Rechargeable | No |
| Capacity | 500mAh |
