About this item

HW 9V Battery Specifications (General Overview)

1. Nominal Voltage:

   • 9V (this is the standard output voltage for most 9V batteries, regardless of chemistry).

2. Battery Chemistry:

   • Most common types are Alkaline, but some models may also be Lithium, Nickel-Cadmium (NiCd), or Nickel-Metal Hydride (NiMH) (for rechargeable types).

3. Capacity:

   • Alkaline 9V Battery: Typically 400–600 mAh.
   • Lithium 9V Battery: Typically 1200–1500 mAh (more capacity and longer lifespan).

4. Size & Dimensions:

   • Height: ~48.5 mm (1.91 inches)
   • Width: ~26.5 mm (1.04 inches)
   • Depth: ~17.5 mm (0.69 inches)

5. Weight:

   • Alkaline: Approx. 45–50 grams.
   • Lithium: Approx. 40–45 grams.

6. Temperature Range:

   • Standard range: -20°C to 60°C (-4°F to 140°F) for most types.

7. Shelf Life:

   • Alkaline 9V Batteries: Can last up to 5–7 years on the shelf.
   • Lithium 9V Batteries: Can last up to 10+ years in storage.

8. Discharge Rate:

   • Alkaline: Moderate rate of discharge, ideal for low to moderate-drain devices.
   • Lithium: Lower discharge rate, better for high-drain or long-term use.

9. Terminals/Connectors:

   • Snap terminals (the standard "clip" connection for most devices).

Common Uses for HW 9V Battery (and similar types):

1. Smoke Detectors:

   • A 9V battery is commonly used in smoke detectors due to its reliability and long shelf life.

2. Toys:

   • Many electronic toys, particularly those requiring a portable, compact power source, use 9V batteries.

3. Musical Instruments:

   • Common in electronic musical devices, such as guitar pedals, keyboards, and other small electronics.

4. Medical Equipment:

   • Hearing aids, pulse oximeters, and some portable medical devices may rely on 9V batteries for power.

5. Testing Equipment:

   • Many handheld electronic testers and multimeters use 9V batteries.

6. Remote Controls:

   • Some remotes, especially for older models or specialized devices, use 9V batteries.

7. Flashlights:

   • Some flashlights, especially those designed for compact or emergency use, are powered by 9V batteries.

8. Prototyping and DIY Electronics:

   • Hobbyists and engineers often use 9V batteries in electronics projects, especially in breadboards for low-power circuits.

9. Portable Radios and Communication Devices:

   • Certain portable radios and walkie-talkies require 9V batteries for operation.

10. Other Small Devices:

    • Devices like electronic timers, alarm systems, and LED lights often rely on 9V batteries.

Advantages:

• Compact Size: Easily fits into smaller devices.
• Convenient: Widely available, easy to replace, and relatively inexpensive.
• Long Shelf Life: Particularly in lithium variants.
• Reliable Power Source: Suitable for low-power applications or devices that do not require frequent battery changes.

Disadvantages:

• Lower Energy Capacity: Compared to larger battery sizes (like AA or AAA), the 9V battery has a relatively lower capacity.
• Drain Rate: Higher-drain devices can quickly deplete the 9V battery's charge.