A teardown of the OnePlus 15 reveals the secrets behind its outstanding battery life.
I mean, just look at that large cell inside.
Here is a summary of battery life and charging capabilities for several phones:
Phone Battery Life
estimate Browsing Video Gaming
OnePlus 15
7300 mAh
10h 44min 30h 6min 12h 37min 14h 16min
Samsung Galaxy S25 Ultra
5000 mAh
8h 0min 20h 49min 8h 54min 14h 21min
Apple iPhone 17 Pro Max
5088 mAh
7h 46min 20h 9min 9h 37min 11h 34min
Google Pixel 10 Pro XL
5200 mAh
6h 58min 19h 41min 10h 0min 4h 35min
Samsung Galaxy Z Fold 7
4400 mAh
5h 31min 14h 18min 6h 38min 8h 43min
OPPO Find X9 Pro
7500 mAh
9h 50min 25h 34min 13h 30min 11h 17min
vivo X300 Pro
6510 mAh
6h 30min 15h 51min 9h 30min 7h 36min
Xiaomi 15 Ultra
6000 mAh
7h 33min 16h 39min 10h 11min 13h 29min
More information on battery and charging for tested phones can be found on the PhoneArena Battery Score page.
Phone Full Charging 30 min Charge
Wired Wireless Wired Wireless
OnePlus 15 7300 mAh 0h 45min 1h 52min 68% 21%
Samsung Galaxy S25 Ultra 5000 mAh 1h 9min 1h 58min 68% 33%
Apple iPhone 17 Pro Max 5088 mAh 1h 16min Untested 64% Untested
Google Pixel 10 Pro XL 5200 mAh 1h 17min Untested 63% Untested
Samsung Galaxy Z Fold 7 4400 mAh 1h 23min 2h 18min 46% 26%
OPPO Find X9 Pro 7500 mAh 1h 20min Untested 52% Untested
vivo X300 Pro 6510 mAh 0h 31min Untested 98% Untested
Xiaomi 15 Ultra 6000 mAh 1h 3min Untested 58% Untested
The OnePlus 15 utilizes "Samsung-sourced" RAM and ROM. The RAM is LPDDR5X Ultra, supporting speeds up to 10,667 Mbps, coupled with UFS 4.1 storage. It features a Snapdragon 8 Elite Gen 5 chipset and the company's G2 gaming network chip.
The OnePlus 15 has top and bottom speakers using the AAC 1510 specification, housed in metal with N'Bass acoustic material. This setup provides a balanced audio experience, unlike the previous generation's uneven 1012H and 1115E configuration.
Reviewers noted that the dual stereo speakers on the OnePlus 15 achieve high volumes. However, sound lacks separation, making music sound crowded, especially at louder levels.
The OnePlus 15 is a capable flagship.
While its mobile photography capabilities may not compete with phones like the Xiaomi 15 Ultra, Oppo Find X8 Ultra, or Vivo X300 Pro, it is a compelling option. The OnePlus 15 is a cool and capable device, especially with potential Black Friday discounts.
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