Best DC Power Supply Under $100
⚡ Quick Verdict
You need high current (10A) for less money. Great for most repair work, battery charging, and general electronics testing.
You need uninterruptible power, better build quality, and don't mind paying more for lower current (5A). Professional-grade features.
📋 Contents
1. Products at a Glance
DC Power Supply 30V 10A
- 0-30V adjustable voltage
- 0-10A adjustable current
- Digital display
- Overload protection
- Cooling fan included
SPS305 30V 5A
- 0-30V adjustable voltage
- 0-5A adjustable current
- Uninterruptible design
- Digital display
- 220V input, 50Hz
2. Side by Side Comparison
| Feature | Amazon 30V 10A | SPS305 30V 5A |
|---|---|---|
| Price | $49.99 -15% | $97.24 |
| Voltage Range | 0-30V | 0-30V |
| Current Range | 0-10A | 0-5A |
| Power | 300W max | 150W max |
| Type | Switching | Uninterruptible |
| Display | Digital | Digital |
| Protection | Overload | Overload/Short circuit |
| Cooling | Fan | Fan |
| Input Voltage | 110V/220V switchable | 220V only |
3. Price & Value
Amazon 30V 10A
Best value for money. Half the price of SPS305 with double the current output.
SPS305 30V 5A
Professional-grade uninterruptible design. Higher build quality but lower current.
4. Video Review: SPS305 in Action
Watch the SPS305 power supply in use for phone repair and testing:
🔊 Video shows SPS305 features and operation (courtesy of AliExpress).
5. Key Differences
💰 Amazon Power Supply
- Higher current (10A) - can power more devices
- Lower price - best budget option
- 15% discount currently available
- Standard switching design
- Good for general electronics work
⚡ SPS305
- Uninterruptible design - no power interruption during testing
- Better build quality
- 5A current - sufficient for most phone repair
- Higher price - you pay for features
- Professional-grade stability
6. Pros & Cons
✅ Amazon Power Supply Pros
- Excellent value at $49.99
- 10A current - double the SPS305
- Switchable 110V/220V input
- 15% discount available
- Great for battery charging
❌ Amazon Power Supply Cons
- Basic switching design
- Lower build quality
- No uninterruptible feature
✅ SPS305 Pros
- Uninterruptible operation
- Professional build quality
- Stable output for sensitive circuits
- Better protection features
❌ SPS305 Cons
- Almost double the price
- Only 5A current
- 220V input only
- Less value for money
7. Final Verdict
Amazon 30V 10A
For most users, this is the better choice. Half the price, double the current, and all the features you need for phone repair and electronics work.
Check Amazon Price
SPS305 30V 5A
Choose this only if you specifically need uninterruptible power or professional-grade build. The extra cost doesn't justify the features for most users.
View on AliExpress