What is the Galaxy Note9 battery capacity and charging speed?
Verified battery capacity, rated playback time and charging details for the Galaxy Note9, each with its official source and verification date.
Short answer
The Galaxy Note9 has a 4000 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 | 4000 mAh | Official sourceGalaxy Note9 — Page labelsStandard capacity; notclaimedratedminimum: Standard Battery Capacity (mAh) 4000 Open source ↗Oct 20, 2026 |
| Fast charge | QC 2.0 and AFC wired fast charging; fast wireless charging | Official sourceGalaxy Note9 — WiredprotocolsnotdeviceW: Wired charging compatible with QC2.0 and AFC 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.