25 watts vs 15: fast and super fast charging Samsung checked in practice

This year, with the release of the Galaxy S10 5G, Samsung began using a charger for the first time

power 25 W. After a while, charging ceased to be exclusive to the flagship and became part of the Galaxy A70 package. The Sammobile resource found out how fast charging actually differs from super-fast charging.

What is the difference

So, in the experiment we used the sameGalaxy A70 with a 4500 mAh battery and 25 and 15 W chargers. In both cases, we tested a smartphone with a charge level of 3%. The results were checked three times: 30, 45 and 60 minutes after the start of charging.

After half an hour, a 25 W charge charged the battery by 33%, and a 15 W charge charged the battery by 26%. After 45 minutes the figures were 51% and 49%, after an hour - 67% and 60%.

For comparison, we also took the Galaxy S10+ with a 4100 mAh battery. Its 15W charging added 34, 52 and 67% charge.


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It turns out that the charging speed does not differ as much as we would like. But it’s possible that Samsung itself limited the speed to keep the battery safe and sound longer.