Samsung Galaxy Z Flip4 and Z Fold4 may leave this fast charging speed behind

Samsung’s next-gen foldables continue to come together through various pre-announcement leaks. The latest rumors claim that the Galaxy Z Fold 4 and Galaxy Z Flip 4 will retain the 25W charging that Samsung has installed in several of its phones since 2019.

The leak is from a Chinese 3C certification (via GSMArena) which puts charging at 9 volts and 2.77 amps, which when rounded up indicates that the phones support up to 25W of power. The USB Power Delivery specification that exceeds 15W is also listed, which potentially means phones will adapt to charge slower when phones may not need maximum charging speeds.

Samsung still includes a charger in the box in China, so these specs only potentially confirm the wattage of the charger, not necessarily the maximum speed the phones support. We’ve seen some phones from Samsung in the past achieve 45W charging with the brick that Samsung will be happy to sell you.

25W fast charging isn’t terribly slow, but it pales in comparison to what we’re seeing from some Android competitors. So during Xiaomi offers blazing 120W charging, Samsung is stuck barely above iPhone territory at 25W.

As we approach the typical launch window for new planned foldables, we’ve seen plenty of other leaks about design change, battery expectationsand improved cameras. Leaks pointing to a Built-in S-Pen have also surfaced, but there is conflicting information as to whether or not they will be included.

Analysis: stop playing with us, Samsung

Samsung’s charging strategy has been, shall we say, unpredictable. In 2019, the Note 10 Plus launched the company’s first 45W charging phone, but a 25W charger was instead included in the box. It was still a step up from the 15W charging that Samsung typically offered at the time and, for the time, it was quite fast. The 45W Charging Brick, however, costs $50, which is a steep price to pay for what turned out to be a mixed bag of results.

You see, we covered GSMArena’s initial testing of the 45W brick on the new Samsung Galaxy S22 Ultra, and reiterated how odd it was that at almost double the power the phone just charges slightly faster . Then we tested the brick ourselves and found that it did, in fact, work as advertised.

As flagship foldables in Samsung’s lineup, we’d expect their charging capabilities to match the S22 Ultra, and we’d find it odd if they didn’t.

Is Samsung trying to preserve long-term battery health on expensive foldables, or was fast charging just not high on the priority list? Will we see 45W charging actually supported once the phone is announced? That remains to be seen, but we don’t know how long Samsung’s foldables can last in 2019 when it comes to fast charging.

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