Samsung unveiled its latest flagship Galaxy S9 and Galaxy S9+ on March 16th . The S9 and S9+ adopts USB PD protocol, the mainstream fast-charging protocol as all the major manufacturers uses this technology. So today, I’m going to test it with 32 USD PD chargers using the our POWER-Z KM001C. Let’s take a look at their performances.
Original Apple 61W charger: 9.01V/1.07A, 9.67W of power, supports USB PD high voltage fast charge.
Original Apple 29W charger: 5.03/1.91A,9.64W of power.
Dell 30W charger: 4.95V/1.95A, 9.68W of power.
Dell 45W charger: 5.04V/1.91A, 9.67W of power.
Dell 65W charger: 5.02V/1.90A, 9.59W of power.
Dell 90W charger: 5.01V/1.98A, 9.93W of power.
Lenovo 45W charger: 5V/1.94A, 9.71W of power.
Lenovo 65W charger: 4.94V/1.95A, 9.67W of power.
HP 45W charger: 5.13V/1.89A, 9.7W of power.
HP 65W charger: 4.95A/1.96A, 9.72W of power.
Xiaomi 65W Charger (wired version): 8.99V/1.09A, 9.86W of power, supports USB PD high voltage fast charger.
Xiaomi 45W Charger (wired version): 9V/1.08A, 9.75W of power, supports USB PD high voltage fast charger.
Huawei 24W Chargers: 9.09V/1.08A, 9.87W of power, supports USB PD high voltage fast charging.
Original Nintendo Switch charger: 4.85V/1.48A, 7.2W of power.
Xiaomi 45W (wireless version): 5.02v/1.93a, 9.71W of power.
Xiaomi 65W (wireless): 4.97V/1.95a, 9.75W of power.
myACT 30W charger: 4.99V/1.95A, 9.76W of power.
Kungxing 24W charger: 5.26V/1.84A, 9.68W of power.
SIMPTUNE 30W charger: 5.01V/1.94A, 9.76W of power.
SIMPTUNE 40W charger: 9.16V/1.07A, 9.88W of power.
SIMPTUNE 45W charger: 5.26V/1.85A, 9.74W of power.
Flying Eagle 45W charger: 5.02V/1.94A, 9.75W of power.
Helper 40W charger: 4.82V/1.96A, 9.5W of power.
Helper60W charger (three ports): 5.21V/1.87A, 9.77W of power.
RAVPower 30W charger: 4.93V/1.98A,9.78W of power.
Netease 65W charger: 5.11V/1.91A, 9.79W of power.
Zikko 18W charger: 5.2V/1.87A, 9.877W of power.
Leco 24W charger: 5.02V/1.94A, 9.78W of power.
Lullian 30W charger: 5.04V/1.94A, 9.79W of power.
Qualcomm QC4+ charger: 4.95V/1.97A, 9.8W power.
Lightning Wolf 30W charger, 5.08V/1.93A, 9.81W of power.
From the 32 USB PD chargers tests, 5 USB PD chargers supported high-voltage fast charging: the Apple A1718 (61W), Xiaomi ADC6501TM (65W), Xiaomi ADC4501TM (45W), and Huawei HW-59C200CHPQ (24W). The last high-voltage fast charger is from a third-party manufacturing factory. In other words, the Samsung S9 can support USB PD fast charging, but compared with the charger, it cannot support most high-voltage fast charging USB PD chargers, which also includes Qualcomm certified QC4+ chargers.
For the Samsung S9, whether it supports the USB PD high-voltage fast charging or not does not seem to have much effect on its charging speed. During the test, most of the charger wats maintained between 9.5W~10W with almost the same battery power.
The Samsung S9 original charger and the Apple 61W USB PD charger were used to charge the Samsung S9 from zero to 100%, respectively, and we used our POWER-Z KM001 to monitor the charging process. From the test power curve, the difference between the two is not significant, especially within the first hour; the charging currents were the same. However, when using the Apple USB PD charger, it entered a constant voltage charging mode a bit earlier than the Samsung original charger.
Compared to Samsung’s original AFC chargers, the USB PD charging speed does not differ too much. After half a hour, the battery level climbed up to 38 %, and then 77% at 1 hour, and the phone was fully charged after a hour.
- Samsung S9 supports USB PD fast charge protocol, but the charging voltage is limited to 5V and doesn’t really support high voltage fast charging.
- Samsung S9 has a limit on charging power. Whether it supports USB PD high-voltage fast charging protocol or not, it only offers 10W fast charge.
- Apple’s original USB PD charger and Samsung’s original AFC charger have similar charging speed. Samsung S9 users may consider using the original chargers because buying a USB PD charger does not seem to make a big difference.