Does the Samsung 45W Power Adapter Fast-Charge the OnePlus 12?
Yes, but only in fallback mode — 45W via USB PD, not the device's fastest proprietary protocol.
The Samsung 45W Power Adapter doesn't speak the OnePlus 12's fastest protocol (SUPERVOOC, up to 80W) — instead they fall back to the universal USB PD, negotiating 45W. That's still real fast charging, just not the device's absolute ceiling.
The details
| Device | OnePlus 12 |
|---|---|
| Charger | Samsung 45W Power Adapter (EP-T4510) |
| Negotiated wattage | 45W |
| Protocol | USB PD |
| Match quality | Fallback |
How your cable affects this
The wattage above assumes an adequately rated cable. Here's what actually happens with three common cable situations:
| Cable | Real wattage | Cable-limited? |
|---|---|---|
| Standard 60W-rated cable (3A, not e-marked) | 45W | Not the bottleneck |
| 100W / 5A e-marked cable | 45W | Not the bottleneck |
| Unrated / unknown cable (assume worst case) | 40W | Cable-limited |
Frequently asked questions
- What's the maximum charging speed for the OnePlus 12 with the Samsung 45W Power Adapter?
- Up to 45W via USB PD, assuming you're using an adequately rated cable.
- Do I need a special cable for this combination?
- Any standard USB-C cable rated 3A or higher works fine — no special "e-marked" cable needed at 45W.
- Will the Samsung 45W Power Adapter unlock the OnePlus 12's full fast-charging speed?
- No — only the OnePlus 12's own official charger and cable reach its full 80W ceiling. The Samsung 45W Power Adapter still charges it safely, just at the lower 45W fallback speed.
Other chargers compatible with the OnePlus 12
Other devices compatible with the Samsung 45W Power Adapter
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