Introduction
Previously, ChargerLAB has reviewed the Samsung Galaxy S25+ and Samsung Galaxy S25 Ultra. The Samsung Galaxy S25 has a 6.2-inch screen and is equipped with the Snapdragon 8 Ultra Edition. It is equipped with a 4000mAh battery and supports 25W wired and 15W Qi2 wireless charging. Below we will conduct a charging review of the Samsung Galaxy S25.
Product Appearance
The front of the box has a black-and-white silhouette of the phone, and Galaxy S25 is printed on the bottom.
Specification information, S/N, IMEI numbers, etc. are posted at the bottom of the box.
The box contains the Samsung Galaxy S25, a dual USB-C cable, and some documents.
The Samsung Galaxy S25 features a 6.2-inch AMOLED display with a resolution of 2340 x 1080 and a refresh rate of 120Hz.
It is available in Icy Blue, Mint, Navy, Silver Shadow, Pink Gold, Coral Red, and Blue Black.
It features a triple rear camera setup, including a 50MP wide-angle lens, a 12MP ultra-wide-angle lens, and a 10MP telephoto lens. ，
The camera is raised, so you need to pay more attention to it in daily use.
The power button and volume button are both on the right side.
The bottom has a SIM card slot, USB-C port, microphone, and speaker.
The length is about 147 mm (5.79 inches).
The width is about 70.49 mm (2.78 inches).
The thickness is about 7.17 mm (0.28 inches).
The weight is about 162.9 g (5.75 oz).
That's how big it is in the hand.
The dual USB-C cable is made of TPE and has a smooth surface. Secure with paper shells.
The connectors and the cable are thickened to be more resistant to bending.
ChargerLAB POWER-Z KM003C shows it doesn't have an E-marker chip.
The length of the cable is about 1 m (3' 3.37'').
After wearing a third-party magnetic phone case and a third-party Qi2 wireless charger, you can see that the input power reaches 20.40W. Excluding the loss, the wireless charging power is about 15W, which meets the Qi2 standard.
It also supports reverse charging up to 4.5W.
Compatibility Test
Next, let's do the charging compatibility test.
Original Charger
Charge with the Samsung 65W three-port charger with the original 3A cable, the power is about 8.45V 2.45A 20.67W.
Charge with the Samsung 25W charger with the original 3A cable, the power is about 8.3V 2.44A 20.25W.
Samsung chargers were tested one by one, and all were paired with the original 3A dual USB-C cable. The maximum voltage can reach 8.5V. The power of the Samsung chargers is above 20W.
Samsung chargers perform well. Whether it is a 25W, 45W, or 65W charger, the maximum charging power is around 20W.
Third-party Chargers
We also used a variety of third-party chargers during the test. Let’s take a look at the results.
The third-party chargers tested can generally reach a voltage of around 8.5-13V, and the power is between 14 and 22W.
We have compiled the test results into a bar chart. There are no compatibility issues. Most of the power is above 20W. The power of chargers that only support the PD protocol is generally below 20W, with the lowest being 14.3W. The power of other chargers that support the PPS protocol is slightly higher, between 20 and 22W. Although the maximum charging power is relatively low, the compatibility is excellent.
Power Banks
The voltage of most power banks can reach 8.5-9V, and the power is between 14 and 21W.
Compiled the test results into a bar chart. There are no compatibility issues. For power banks that support the PPS protocol, the power is generally higher, up to around 20W.
Full Charging Test
We use the Samsung 65W three-port charger with the original 3A cable to fully charge the Samsung Galaxy S25. And put them into a 25°C (77℉) thermotank throughout the test.
The voltage is always around 9V. The charging curve can be divided into four parts. The power is around 22W for the first 22 minutes. After that, the power dropped to 19W and 13W in turn. The final part begins at 52 minutes, and the power slowly drops to almost zero. It takes 1 hour and 34 minutes to be fully charged.
We also turn it into another curve. The Samsung 65W three-port charger can charge the Samsung Galaxy S25 to 50% in 26 minutes. And it can reach 80% in 48 minutes and 100% in 1 hour and 34 minutes.
Temperature Test
We also recorded the highest temperature on the front and back after charging for 10 minutes, 20 minutes, and 30 minutes.
10 minutes Charging
After 10 minutes, the maximum temperature on the front is 32.0℃ (89.6 ℉).
The back is 33.1℃ (91.58 ℉).
20 minutes Charging
After 20 minutes, the maximum temperature on the front is 33.8℃ (92.84 ℉).
The back is 34.9℃ (94.82 ℉).
30 minutes Charging
After 30 minutes, the maximum temperature on the front is 33.6℃ (92.48 ℉).
The back is 34.2℃ (93.56 ℉).
We also turn it into a bar chart. During charging, the temperature on the back is slightly higher than that on the front. The temperature is highest at 20 minutes, with the back temperature at 34.9℃ (94.82℉). The temperature has dropped at 30 minutes, and the temperature control is excellent.
Summary of ChargerLAB
Samsung Galaxy S25 is equipped with a 6.2-inch AMOLED high-refresh screen with a resolution of 2340 x 1080px, 2600 nits peak brightness. It is equipped with Qualcomm Snapdragon 8 and integrated with Galaxy AI.
It is equipped with a 4000mAh battery, which can be charged to 50% in 26 minutes with a Samsung 65W charger, and fully charged in 1 hour and 34 minutes. It has excellent compatibility with third-party chargers and power banks. The power of charging devices that support the PD protocol can reach between 14 and 20W, and the power of charging devices that support the PPS protocol is generally higher, up to 22W. Overall, the Samsung S25 has a small body, strong battery life, excellent performance, and a very good user experience. For users who like small screens, the Samsung S25 is a good choice.
Related Articles：
1. Charging Review of Samsung Galaxy S25 Ultra
2. Charging Compatibility Test of Samsung Galaxy S25 Ultra
3. Samsung Galaxy S25 Battery Test
