SunFounder BreadVolt Breadboard Power Supply Module Built-in Rechargeble Battery Compatible with Arduino, Raspberry Pi, Pico W, ESP32, 5V/1.5A, 3.3V/1A, USB Output (Breadboard NOT Included)
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This is a compact, battery-powered breadboard supply offering 5V/1.5A and 3.3V/1A outputs, best for small, portable Arduino or Raspberry Pi projects.
This module is a good fit if you need a portable power source for low-power breadboard projects, offering 5V/1.5A and 3.3V/1A outputs with a built-in 500mAh battery. Its compact 52mm x 32mm x 24mm size makes it convenient for small setups. However, its limited current output and reported battery degradation make it unsuitable for power-hungry or long-duration applications.
If you need more current or longer battery life, look for modules with higher amperage ratings (e.g., 3A at 5V) and larger capacity Li-ion batteries (e.g., 1000mAh+).
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Pros
- Provides both 5V/1.5A and 3.3V/1A power outputs, adjustable via jumper caps.
- Includes a built-in 3.7V 14500 Li-ion battery with 500mAh capacity for portable use.
- Features a USB Type-A output for powering external devices.
- Compact dimensions of 52mm x 32mm x 24mm make it easy to integrate into projects.
- Offers over-discharge, overcharge, overcurrent (around 3.75A), and short circuit (around 32A) protection.
- Charges via a common USB Type-C port with a 500mA charging current.
Cons
- The 5V/1.5A output might be insufficient for more demanding projects with multiple components.
- The 500mAh battery's life has been reported to diminish over time, requiring frequent recharging.
- Some users found the setup confusing, especially when adjusting voltage outputs with jumper caps.
- Compatibility issues with certain breadboards have been reported.
- The minimalist design lacks visual indicators for power status, leading to uncertainty.
Dimension Scores
The 5V/1.5A and 3.3V/1A outputs are standard for basic breadboard power, but the 1.5A at 5V can be limiting for more demanding projects.
As a power supply module without moving parts like fans, it operates silently.
While compact, user reports mention intermittent power delivery issues and battery degradation over time, suggesting average build quality for a budget device.
It integrates directly into a breadboard, minimizing external cables, but the USB-C charging port still requires a cable.
Best For
- powering small, mobile Arduino or Pico W projects without a wall outlet
- beginners learning basic circuit power management on a breadboard
- prototyping simple ESP32 or Raspberry Pi circuits on the go
Not Recommended For
- projects requiring more than 1.5A at 5V or 1A at 3.3V
- users who need extensive documentation or a more intuitive voltage selection interface
- applications where consistent, long-term battery performance is critical
Watch Out For
- The 500mAh internal battery's capacity and longevity are a concern, with reports of diminished life over time.
- Some users experience connectivity problems, despite broad compatibility claims, leading to project frustration.
- The compact 52mm x 32mm x 24mm size means it's easy to misplace in a cluttered workspace.
- Documentation is often described as insufficient, making troubleshooting difficult for specific issues.
- Intermittent power delivery issues have been reported by multiple users.
Full Specifications
| ASIN | B0D31CWN3X |
| Brand | SunFounder |
| Platform | Linux |
| Batteries | 1 Lithium Ion batteries required. (included) |
| CPU Model | 6X86 |
| CPU Socket | LGA 1156 |
| Model Name | BreadVolt |
| Item Weight | 1.41 ounces |
| Chipset Type | AMD A55T |
| Manufacturer | SunFounder |
| Item model number | DE-A-Breadboard with Battery |
| Compatible Devices | Arduino, Raspberry Pi, Pico W, ESP32 |
| Product Dimensions | 2.05 x 1.26 x 0.94 inches |
| Compatible Processors | ARM-based microcontrollers and microprocessors |
| RAM Memory Technology | DDR3, DDR4 |
| Main Power Connector Type | USB |
What Buyers Say
Many users have reported issues with the battery's longevity, noting that its life diminishes over time and requires constant recharging. The 5V/1.5A output is often cited as a limitation for anything beyond basic projects, leading to frustration when trying to power multiple components. While designed for beginners, some found the voltage adjustment process confusing due to insufficient documentation. Compatibility with certain breadboards is also a hit-or-miss situation, causing unexpected setup hurdles.
“Honestly, I bought this for my Arduino stuff, and it's okay for blinking an LED, but try to power anything else and it just dies, plus the battery barely lasts an hour now after a few months.”
Common Praise
- The built-in 500mAh battery makes it genuinely portable for small projects.
- Having both 5V and 3.3V outputs on a single module is convenient.
- The compact 52mm x 32mm x 24mm size fits well on breadboards.
- USB Type-C charging is a modern and convenient feature.
- The inclusion of over-discharge and overcharge protection is a safety plus.
Common Complaints
- The 1.5A current limit at 5V is too low for many common microcontrollers and peripherals.
- The 500mAh battery doesn't hold a charge for long, and its capacity seems to decrease quickly.
- Adjusting voltages with jumper caps feels clunky and isn't clearly explained in the manual.
- Some breadboards don't fit the module correctly, making it unstable.
- Lack of clear power status indicators makes it hard to tell if it's on or charging.
- Intermittent power delivery causes project instability and debugging headaches.
Ownership Tips
- The battery capacity feels much smaller than 500mAh after a few charge cycles.
- You'll probably need to keep it plugged in via USB-C for anything serious, defeating the 'portable' aspect.
- The jumper caps for voltage selection are tiny and easy to lose.
- It can be a pain to remove from the breadboard without bending pins if it's a tight fit.
- The lack of a battery level indicator is a constant guessing game.
Frequently Asked Questions
What are the output voltages and currents?
It provides 5V at up to 1.5A and 3.3V at up to 1A. These outputs are adjustable using jumper caps.
Does it have a built-in battery?
Yes, it has a built-in 3.7V 14500 Li-ion battery with a 500mAh capacity for portable operation.
How do I charge the module?
You can charge it via a USB Type-C port with a 5V input and a 500mA charging current.
Is it compatible with all breadboards?
It's compatible with commonly available breadboards that have a width of 2.13 inches, but some breadboards are not compatible.
Can it power a Raspberry Pi?
Yes, it's compatible with Raspberry Pi, Pico W, Arduino, and ESP32, but the 1.5A output might be limiting for more complex Raspberry Pi projects.
Does it have protection features?
Yes, it includes over-discharge, overcharge, overcurrent, and short circuit protection for the battery and outputs.
Buying Guide
When looking at breadboard power supplies, you need to think about how much juice your project actually needs. Don't just assume 5V is 5V; the amperage (A) is crucial. If you're powering a simple microcontroller and a few sensors, 1A or 1.5A might be fine. But if you're adding motors, displays, or multiple power-hungry components, you'll hit that current limit fast, and your project will act weird or just shut down. Also, consider if you truly need battery power or if a wall adapter is always available. Battery capacity (mAh) dictates how long you can run unplugged.
Output Voltage/Current (e.g., 5V/1.5A, 3.3V/1A)
This tells you what voltages the module can supply and how much electrical current it can deliver. If your components collectively draw more current than the module can provide, your circuit won't work correctly, like trying to run a hairdryer on a phone charger.
Battery Capacity (e.g., 500mAh)
Measured in milliampere-hours (mAh), this indicates how long the built-in battery can power your project before needing a recharge. A higher mAh number is like a bigger fuel tank for your portable electronics.
Charging Input (e.g., USB Type-C, 5V)
This specifies how you recharge the module's internal battery. USB Type-C is convenient because it's a common, reversible connector, but ensure the input voltage matches your charger.
Alternatives
If this module doesn't cut it, look for breadboard power supplies with higher current outputs (e.g., 2A or 3A at 5V) and larger integrated battery capacities, or consider modules that accept external power banks for extended runtimes.
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