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Specification
AgeRangeDescription : adult
Brand : Walfront
BulletPoint1 : USB power tester can measure USB charging voltage, current and discharge capacity over time.
BulletPoint2 : Compatible with fast-charger compatible, power tester can work under upto 20V and it does not interfere with fast negotiation.
BulletPoint3 : Such tester can be used to check the performance of USB cables, wall chargers, car chargers and power banks.
BulletPoint4 : Empty display with memory function after power off, power meter is with high performance according to strict rule.
BulletPoint5 : With reset button, press 3-5 seconds can make that the screen will be cleared .
Color : Black
ExternallyAssignedProductIdentifier : 7648370302985
IncludedComponents : No
ItemName : USB Tester Digital Multimeter USB Power Tester USB Voltmeter USB Power Meter Capacity Voltage Current Power Display for Wall Chargers
ItemPackageDimensions_Height : 2 centimeters
ItemPackageDimensions_Length : 14 centimeters
ItemPackageDimensions_Width : 8 centimeters
ItemPackageQuantity : 1
ItemTypeKeyword : voltage-testers
Manufacturer : WALFRONT
Material : Metal
MeasurementAccuracy : 0.1mm
ModelName : WALFRONTu15m23hdc0
ModelNumber : WALFRONTu15m23hdc0
NumberOfBoxes : 1
NumberOfItems : 1
PartNumber : WALFRONTu15m23hdc0
PowerSourceType : Corded Electric
ProductDescription : 1. USB power tester can measure USB charging voltage, current and discharge capacity over time.
2. Such tester can be used to check the performance of USB cables, wall chargers, car chargers and power banks.
3. Compatible with fast-charger compatible, power tester can work under upto 20V and it does not interfere with fast negotiation.
4. Empty display with memory function after power off, power meter is with high performance according to strict rule.
5. With reset button, press 3-5 seconds can make that the screen will be cleared .

Spec:
Item Type: USB power tester
Model: KWS-V21
Voltage: Input / Output Voltage: 3.5-20v, Voltage Resolution: 0.01V
Current: Input / Output Current: 0-3.3A, Current Resolution: 0.01A
Accuracy: ±1%
Line Loss: Aabout 0.1Ω
IN: Input is connected to the charger's output port.
RESET: Reset button, press 3-5 seconds, the screen will be cleared.
OUT: Output terminal is connected to the data line USB port.
Input Voltage Display Window: 3.5-20V
Charging Current Display Window: 0-3.3A(accuracy + 1%)
Battery Capacity Display Window: 0-99999mAh
Working Time Display Window: 0-99min working time and empty display with memory function after power off
Voltage Range: 3.5-20V
Maximum Current: 3.3A
Resolution: 0.01V, 0.01A, 1mAh

packing list:
1 x USB Power Tester

ProductSiteLaunchDate : 2025-04-25T11:06:10.569Z
Size : 46x21mm
Style : /
SupplierDeclaredDgHzRegulation : not_applicable
SupplierDeclaredHasProductIdentifierExemption : 1
UnitCount : 1
UnspscCode : 41113600