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Galaxy Z Fold 8 battery upgrade tipped, Galaxy Wide Fold coming in close

Close up of Galaxy Z Fold 7 partially unfolded.
ⓘ Samsung
Close up of Galaxy Z Fold 7 partially unfolded.
Latest rumors have hinted at the battery capacities for the Galaxy Z Fold 8 and the Galaxy Wide Fold. The flagship book-style fold could come with the largest battery of any Galaxy Z Fold phone to date.

When it comes to smartphone battery capacity, Samsung has remained on the conservative side for years. It is expected to branch out and use silicon carbon in an upcoming phone, but the Galaxy Z Fold lineup will stick with the traditional Li-Po cells. As unfortunate as that is, the company has reportedly managed to increase the battery capacity by nearly 13 percent.

The Galaxy Z Fold 8 is expected to arrive in July alongside the Galaxy Z Flip 8. While the latter is expected to skip the battery upgrade this year, the book-style foldable will likely be upgraded to 5,000 mAh. The information comes courtesy of GalaxyClub who claim that one battery is rated at 2,369 mAh, while the other is rated at 2,485 mAh. The total battery capacity comes out to 4,854 mAh, which will be advertised as 5,000 mAh by Samsung.

The Galaxy Z Fold 7 (buy on Amazon) packs a 4,400 mAh battery, the same as its predecessor. Even with the 5,000 mAh, Samsung will still be far behind the foldable competition from brands like Oppo, Motorola, Huawei, and even its own Galaxy Z TriFold.

Furthermore, the report points out that another 2,393 mAh battery was tested, which could be for the Galaxy Wide Fold, the cheaper Fold alternative. Said phone is also expected to arrive alongside the new foldables. If the rated battery is accurate, the total capacity for this phone could be around 4,900 mAh, which will be just smaller than the Galaxy Z Fold 8 but still larger than the Galaxy Z Fold 7.

As for charging speeds, till now, Samsung has only supported 25W wired charging with its Fold lineup, but seeing has how the Galaxy Z TriFold supports 45W wired fast charging, the Galaxy Z Fold 8 could also come with upgraded charging speeds. 

Source(s)

GalaxyClub (machine translated)

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> Expert Reviews and News on Laptops, Smartphones and Tech Innovations > News > News Archive > Newsarchive 2026 03 > Galaxy Z Fold 8 battery upgrade tipped, Galaxy Wide Fold coming in close
Vineet Washington, 2026-03-16 (Update: 2026-03-16)