Overview
The FNB48P BT is a multi-function USB voltage and current detector designed for engineers, tech enthusiasts, and repair professionals. Featuring a vibrant 1.77-inch high-definition color screen, it provides 6-digit precision for the most accurate readings possible. Whether you’re checking if a “Fast Charger” is actually fast, measuring the true capacity of a power bank, or identifying a fake USB cable, the FNB48P handles it all with professional-grade accuracy.
Key Features
Bluetooth Connectivity: Monitor real-time graphs and export data via the dedicated Android App or PC software—perfect for long-term battery capacity testing.
Protocol Triggering: Supports PD (Power Delivery), QC 2.0/3.0, Huawei FCP/SCP, and Samsung AFC. You can manually “trigger” specific voltages to test charger limits.
Cable Resistance Test: Measure the internal resistance of your USB cables to find out which ones are losing power and slowing down your charging.
Gravity Sensing: The screen automatically rotates based on how you plug it in, so the data is always right-side up.
Ripple Measurement: Detects power supply noise (ripple) to see how clean and stable your charger’s output really is.
Technical Specifications
| Feature | Specification |
| Voltage Range | 4.00000V – 24.0000V |
| Current Range | 0.00000A – 6.50000A |
| Power Range | 0W – 156.00W |
| Internal Resistance | 0 – 9999.9Ω |
| Capacity Recording | 0 – 9999.99Ah |
| Display | 1.77 Inch TFT Color LCD |
| Interfaces | USB-A, USB-C (In/Out), Micro-USB |
| Connectivity | Bluetooth + PC HID (Micro-USB) |


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