Product comparison · 2 mobile device chargers

InLine USB PD power supply, GaN charger, 2-port, USB-C + USB-A vs InLine USB PD power supply, GaN charger, 1-port, USB-C

40specifications compared
14differ
26identical
6known for one product only

Key differences

Number of simultaneously connected devices (max)
- USB PD power supply, GaN charger, 2-port, USB-C + USB-A:2
- USB PD power supply, GaN charger, 1-port, USB-C:1
Input current
- USB PD power supply, GaN charger, 2-port, USB-C + USB-A:0.85 A
- USB PD power supply, GaN charger, 1-port, USB-C:1 A
Maximum power
- USB PD power supply, GaN charger, 2-port, USB-C + USB-A:30 W
- USB PD power supply, GaN charger, 1-port, USB-C:45 W
Maximum output voltage
- USB PD power supply, GaN charger, 2-port, USB-C + USB-A:12 V
- USB PD power supply, GaN charger, 1-port, USB-C:20 V
Port 1 output power
- USB PD power supply, GaN charger, 2-port, USB-C + USB-A:30 W
- USB PD power supply, GaN charger, 1-port, USB-C:45 W
Output current (12V)
- USB PD power supply, GaN charger, 2-port, USB-C + USB-A:2.5 A
- USB PD power supply, GaN charger, 1-port, USB-C:3 A
Efficiency (@10 %)
- USB PD power supply, GaN charger, 2-port, USB-C + USB-A:82.21%
- USB PD power supply, GaN charger, 1-port, USB-C:80.91%
Height
- USB PD power supply, GaN charger, 2-port, USB-C + USB-A:34 mm
- USB PD power supply, GaN charger, 1-port, USB-C:35 mm

Side by side

Differences highlightedShow differences only

Comparison of 31550, 31551
46 specifications	A InLine USB PD power supply, GaN charger, 2-port, USB-C + USB-A Model 31550 View product	B InLine USB PD power supply, GaN charger, 1-port, USB-C Model 31551 View product
Performance1 differ
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantityKnown for one	1	Unknown — not stated by the source
Fast charging technologyKnown for one	Quick Charge 3.0	Unknown — not stated by the source
Number of simultaneously connected devices (max)Differs	2	1
Power7 differ
Input currentDiffers	0.85 A	1 A
Maximum powerDiffers	30 W	45 W
Maximum output voltageDiffers	12 V	20 V
Port 1 output powerDiffers	30 W	45 W
Port 2 output powerKnown for one	18 W	Unknown — not stated by the source
Output current (12V)Differs	2.5 A	3 A
Port 1 output currentKnown for one	3 A	Unknown — not stated by the source
Average active efficiencyDiffers	83.78% (230V, 50Hz, USB-A 5.0V/3.0A) / 87.77% (230V, 50Hz, USB-A 12.0V/1.5A) / 84.33% (230V, 50Hz, USB-C 5.0V/3.0A) / 88.73% (230V, 50Hz, USB-C 12.0V/2.5A) / 85.56% (230V, 50Hz, USB-A 5.0V/1.7A + USB-C 5.0V/1.7A)	83.87% (230V, 50Hz, 5.0V/3.0A) / 88.70% (230V, 50Hz, 20.0V/2.25A)
Efficiency (@10 %)Differs	82.21%	80.91%
Output current (15V)Known for one	Unknown — not stated by the source	3 A
Output current (20V)Known for one	Unknown — not stated by the source	2.25 A
Weight & dimensions2 differ
HeightDiffers	34 mm	35 mm
WeightDiffers	61 g	93 g
Packaging data3 differ
Package widthDiffers	60 mm	61 mm
Package heightDiffers	40 mm	41 mm
Package weightDiffers	81 g	100 g
Other features1 differ
Dimensions (WxDxH)Differs	40 x 82 x 34 mm	40 x 82 x 35 mm

A dash means the value is not stated by the source. Unknown values are never counted for or against a product, and there is no overall score.

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