9V Battery – Reliable Power for Electronics Projects
9V Battery – Standard Alkaline Power for Everyday Electronics
The 9V battery (PP3 form factor) is an essential power source for a wide range of electronics. It provides a stable 9 volts DC, making it ideal for portable devices, testing equipment, and compact projects. Whether you're powering an Arduino, a multimeter, or a DIY amplifier, this battery delivers consistent performance.
Key Specifications
| Specification | Value |
|---|---|
| Nominal Voltage | 9V DC |
| Chemistry | Alkaline |
| Typical Capacity | 550–600 mAh |
| Dimensions | 48.5 mm x 26.5 mm x 17.5 mm |
| Weight | ~45 g |
| Terminal Type | Snap connector (male/female) |
What You Can Build With This
- Portable Arduino projects like environmental sensors or LED displays
- Power a digital multimeter for on-the-go measurements
- Wireless alarm systems with 9V-operated sensors
- Guitar effect pedals and audio circuits
Compatibility
This 9V battery works with any device that accepts a PP3 snap connector. It is commonly used with Arduino boards via the Vin pin, ESP32 modules with 9V input, and development boards that have a 9V barrel jack or terminal. It also pairs perfectly with standard 9V battery clips for breadboard prototyping.
Wiring Notes
Use a 9V battery snap connector with red (+) and black (-) wires. For Arduino, connect the positive red wire to Vin and the black wire to GND. Ensure your circuit does not draw more than 100–150 mA continuously to avoid voltage sag. If using with sensitive electronics, consider adding a capacitor across the terminals to reduce noise.
Why Buy from Compoden
Every component is sourced from verified suppliers and tested for compatibility before listing. We've spent 10 years building projects for makers, schools, and institutions across India. Ships from Bengaluru in 3-5 days. If defective on arrival, replace within 7 days.
Is this compatible with Arduino Uno?
Yes, you can power an Arduino Uno by connecting the 9V battery to the Vin pin and GND. The onboard regulator will step down to 5V. Do not draw more than 150 mA total from the 5V pin when using a 9V battery.
How long does a 9V battery last in typical projects?
For a low-power circuit drawing 10 mA, expect around 50–60 hours. Higher current loads will reduce runtime proportionally. For reference, an Arduino Uno with minimal components uses about 50 mA, giving roughly 10–12 hours of operation.
Can I use a rechargeable 9V battery instead?
Yes, rechargeable 9V batteries (NiMH or Li-ion) work in most devices, but note they have slightly lower voltage (7.2V or 8.4V nominal) and may not suit circuits requiring a stable 9V under load. This listing is for a standard alkaline battery.
📦 Free Setup Handoff Document Included
Every Compoden order includes a free setup handoff document — step-by-step instructions to get your component working within minutes. Download it via QR code on your package. The handoff document is also trained to help you troubleshoot the majority of problems.
What you can build with this
Shipping Information
- Prepaid Orders: ₹75 for orders up to ₹999, FREE shipping above ₹999
- COD Orders: ₹125 shipping + ₹50 COD fee = ₹175 total
- Delivery Timeline: Dispatch in 1-2 days, delivery in 2-7 days depending on location
Returns & Warranty
- 7-Day Return: Manufacturing defects only (approval required)
- Warranty: 7 days from delivery
- Non-Returnable: Batteries, consumables, cut wires, clearance items