Battery capacity is one of the few phone specs you can rank with no ambiguity: it’s a single number in mAh, printed on every spec sheet. We pulled every phone released in 2025 or later from our catalog, sorted by that number, and picked the nine biggest across a range of prices. Silicon-carbon (“Si/C”) battery chemistry, which several of these use, is part of why capacities this large fit into a normal phone body: it packs more capacity into the same physical cell size than older lithium-ion designs.
Realme P4 Power, 10001 mAh, RM1,999
The largest battery in our entire 2025+ catalog. A Si/C Li-Ion cell rated at 10001 mAh, paired with a Dimensity 7400 Ultra chipset, 12GB RAM, and 256GB storage. Charging is 80W wired, reaching 50% in 36 minutes despite the cell size. The display is a 6.8-inch AMOLED panel at 144Hz.
vivo iQOO Z11, 9020 mAh, RM1,899
A Snapdragon 7s Gen 4 chipset with 8GB RAM and 256GB storage (listed as an online-exclusive configuration), on a 6.83-inch AMOLED display running at 165Hz, tied with the OnePlus 15 below for the highest refresh rate in this list. The 9020 mAh cell charges at 90W wired.
Xiaomi Poco X8 Pro Max, 8500 mAh, RM1,999
The battery is listed as 8500 mAh or 9000 mAh depending on market, alongside a Dimensity 9500s chipset (the same 3nm flagship-tier silicon used in more expensive phones), 12GB RAM, and 256GB storage. Charging is rated at 100W wired, reaching 50% in 24 minutes, second only to the OnePlus 15’s 120W further down this list.
HUAWEI nova 15 Max, 8500 mAh, RM1,699
An 8500 mAh battery paired with 8GB RAM and 256GB storage, on a 6.84-inch OLED display at 120Hz. Charging is slower than most of this list at 40W wired. TechNave’s listing doesn’t specify a chipset for this model.
HONOR X9d 5G, 8300 mAh, RM1,499
A Snapdragon 6 Gen 4 chipset, 12GB RAM, and 256GB storage, with an 8300 mAh battery charging at 66W wired. The AMOLED display peaks at 6000 nits, the second-highest peak brightness in this list after the Realme P4 Power above.
Oppo Find X9 Pro, 7500 mAh, RM4,999
At the flagship end of this list: a Dimensity 9500 chipset, 16GB RAM, and 512GB storage, with a 7500 mAh battery supporting both 80W wired and 50W wireless charging.
nubia RedMagic 11 Pro, 7500 mAh, RM3,399
A Snapdragon 8 Elite Gen 5 chipset, 12GB RAM, and 256GB storage. The 7500 mAh battery supports 80W wireless charging on top of 80W wired. Only two other phones on this list offer wireless charging at all (the Oppo Find X9 Pro above and the OnePlus 15 below, both at 50W), so this is well ahead of both.
OnePlus 15, 7300 mAh, RM4,399
A Snapdragon 8 Elite Gen 5 chipset, 16GB RAM, and 512GB storage, on a 6.78-inch LTPO AMOLED display at 165Hz. The 7300 mAh battery charges at 120W wired, the fastest wired speed in this entire list, plus 50W wireless.
TECNO Pova 7, 7000 mAh, RM599
The cheapest phone on this list by a wide margin. A Helio G100 Ultimate chipset, 8GB RAM, and 128GB storage, with a 7000 mAh battery charging at 45W wired. It’s LTE only, not 5G, which is part of how TECNO keeps the price this low.
How we picked these
Same filter as our other roundups: phones released in 2025 or later, spec sheet data pulled directly from 01-raw.json, nothing estimated. Battery capacity here is the mAh figure as listed on each phone’s own spec sheet; real-world screen-on time depends on the display, chipset efficiency, and how you use the phone, which a raw mAh number doesn’t capture on its own. If you want help reading the rest of a spec sheet beyond the battery line, see our guide to reading a phone spec sheet.