Introduction

Almost all multi-port chargers have the problem of power distribution when multiple ports are outputting at the same time. Today we will review the Samsung 65W 2C1A charger, which has the most ports under Samsung chargers.

The Samsung 65W 2C1A Charger

The charger has a black flame-retardant shell.

There are two USB-C ports and one USB-A port on the side, where the bottom is printed with the maximum output power, from which we can see that the two USB-C ports have different powers.  

The specifications are printed on the bottom of the charger.

USB-C1 output: 5V3A, 9V3A, 15V3A, 20V3.25A

USB-C2 output: 5V3A, 9V2.77A

USB-A output: 5V2A, 9V1.67A

USB-C1+USB-C2: 65W (MAX)

USB-C1+USB-A: 65W (MAX)

USB-C2+USB-A: 40W (MAX)

USB-C1+USB-C2+USB-A: 65W (MAX)

Charging Test

Let's test the power distribution of the charger when charging different devices.

Single-port Output

Using USB-C1 to charge the Samsung S22+, it supports 65W PD fast charging and 45W PPS fast charging, and the Samsung S22+ supports 45W PPS fast charging. The charging power is 9.14V 4.09A 37.42W, which is in PPS fast charging.

Using USB-C2 to charge the Samsung S22+, it supports 25W PD fast charging and 30W PPS fast charging, and the Samsung S22+ supports 45W PPS fast charging. The charging power is 8.58V 2.76A 23.71W, which is in PPS fast charging.

Both USB-C ports successfully activated PPS fast charging for charging the Samsung S22+.

It is 18.57V 3.23A 63.4W when the USB-C1 is charging the MacBook Pro 16, activating the PD fast charging.

When charging the iPhone 13 Pro Max, the USB-C2 is at around 25W, which has reached its maximum output power.

It is around 14W when the USB-A port is charging the Samsung S22+.

Simultaneous Dual-port Output

Using USB-C1 to charge the Samsung S22+ and USB-C2 to charge the Samsung S21 simultaneously, the powers are 23.25W and 20.89W, respectively.

Using USB-C1 and C2 to charge two laptops simultaneously, the power of USB-C1 is 38.82W, and USB-C2 has no output power. It seems that the two USB-C ports cannot charge two laptops at the same time.

Using USB-C1 to charge the laptop and USB-C2 to charge the Samsung S22+ simultaneously, the powers are 38.76W and 23.61W, respectively. Then, the USB-C1 is in PD fast charging, while USB-C2 is in PPS fast charging.

Using USB-C1 to charge the Samsung S22+ and USB-A to charge the Samsung S21 simultaneously, the powers are 20.98W and 9.38W, respectively. Then, the USB-C1 is in PPS fast charging, while USB-A is in AFC fast charging.

Using USB-C1 to charge the laptop and USB-A to charge the Samsung S21 simultaneously, the powers are 48.92W and 9.31W, respectively. Then, the USB-C1 is in PD fast charging, while USB-A is in AFC fast charging.

Using USB-C2 to charge the Samsung S22+ and USB-A to charge the Samsung S21 simultaneously, the powers are 24.14W and 9.39W, respectively. Then, the USB-C2 is in PPS fast charging, while USB-A is in AFC fast charging.

Using USB-C2 to charge the laptop while using the USB-A port to charge the phone simultaneously, the USB-C2 has no output power, and the USB-A port is in AFC fast charging.

Simultaneous Triple-port Output

Using USB-C1 and C2 to charge two laptops while using the USB-A to charge the phone simultaneously, the powers of C1 and A are 33.61W and 5.79W, respectively. And the USB-C2 has no output power.

Using USB-C1, C2 and A to charge the laptop, Samsung S22+ and Samsung S21 simultaneously, the powers are 33.77W, 23.39W and 5.71W, respectively. Then, the USB-C1 is in PD fast charging, USB-C2 is in PPS fast charging, and the USB-A port is in AFC fast charging.

Power Reduction and Stopping Test

When a multi-port charger is charging multiple devices, the first cable will stop working when inserting the second cable, as seen in most multi-port chargers. Let's see if the Samsung 65W charger has the problem.

When the USB-C1 is charging the phone, the other cable is inserted into the USB-C2 port. At this time, the USB-C1 stops charging, and its power drops back to zero and then returns to normal.

Let's test the other port. At this time, when USB-C1 is charging the phone, the cable is inserted into the USB-A port. The power of USB-C1 decreases at the moment, but it does not return to zero.

Inserting the cable into the USB-A when the USB-C2 is charging the phone, we can see the power of the C2 doesn't reduce or return to zero.

Summary of ChargerLAB

To make the data more precise, ChargerLAB has made a chart here.

To sum up, the USB-C1 port supports 65W PD fast charging and 45W PPS fast charging; the USB-C2 supports 25W PD and PPS fast charging; the USB-A port supports 15W AFC fast charging.

In the single-port output, USB-C1 and C2 can provide 65W and 25W output power when in PD fast charging and 45W and 25W output power in PPS fast charging.

In the simultaneous dual-port output, the USB-C can support fast charging for phones that support PPS fast charging. In contrast, USB-A is in AFC fast charging. But USB-C2 can't charge the laptop normally.

In the simultaneous triple-port output, the power of the USB-A will reduce to 5W. The USB-C2 also can't charge the laptop normally, while the phone charging is normal.

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