What is the Galaxy S9+ battery capacity and charging speed?
Verified battery capacity, rated playback time and charging details for the Galaxy S9+, each with its official source and verification date.
Short answer
The Galaxy S9+ has a 3500 mAh battery.
✓2 verified fields · sources reviewed Oct 20, 2026
Battery & charging at a glance
Evidence, field by field
Every value below is drawn from the official specification source for this phone, with its verification date.
| Field | Verified value | Source |
|---|---|---|
| Capacity mah | 3500 mAh | Official sourceGalaxy S9+ — Launchcapacity notclaimedratedminimum: Battery | 3,000mAh | 3,500mAh Open source ↗Oct 20, 2026 |
| Fast charge | QC 2.0 wired fast charging | Official sourceGalaxy S9+ — ActualQC2wiredprotocol notW: Fast Wired Charging compatible with QC 2.0 Open source ↗Oct 20, 2026 |
What this page does not claim
Battery life depends on usage, settings and battery age. TePhone reports the official rated figure and the verified charging limit, and never fabricates a battery-capacity number.