Samsung 45W Super Fast Charging Explained
A complete guide to Samsung's 45W Super Fast Charging 2.0: which Galaxy phones actually support it, why PPS matters, the exact chargers and cables you need, and how to tell if it's working. Stop guessing — start charging at full speed.
What Is Samsung Super Fast Charging 2.0?
Samsung Super Fast Charging 2.0 is Samsung's implementation of the USB Power Delivery 3.0 standard with Programmable Power Supply (PPS). It allows compatible Galaxy phones to negotiate precise voltage and current with the charger in real-time, reaching up to 45 watts during the initial charging phase.
PPS is the key differentiator. Standard USB PD uses fixed voltage steps (5V, 9V, 15V, 20V), but PPS allows the phone to request any voltage between 3.3V and 21V in 20mV increments. This fine-grained control means less heat generated in the phone's voltage regulator, faster charging, and better long-term battery health.
The PPS Requirement
A charger labelled "45W" or "PD 3.0" without PPS will not trigger Super Fast Charging. Your phone will fall back to 15W standard charging. Always verify the charger explicitly lists PPS support.
Galaxy Phone Charging Compatibility
Every current and recent Galaxy model with its maximum charging wattage and estimated time to full charge.
| Model | Battery | Max Watts | PPS | ~Time to Full | Released |
|---|---|---|---|---|---|
| Galaxy S25 Ultra | 5,000 mAh | 45W | ✓ | ~56 min | Jan 2025 |
| Galaxy S25+ | 4,900 mAh | 45W | ✓ | ~58 min | Jan 2025 |
| Galaxy S25 | 4,000 mAh | 25W | ✓ | ~62 min | Jan 2025 |
| Galaxy S24 Ultra | 5,000 mAh | 45W | ✓ | ~58 min | Jan 2024 |
| Galaxy S24+ | 4,900 mAh | 45W | ✓ | ~60 min | Jan 2024 |
| Galaxy S24 | 4,000 mAh | 25W | ✓ | ~64 min | Jan 2024 |
| Galaxy S23 Ultra | 5,000 mAh | 45W | ✓ | ~59 min | Feb 2023 |
| Galaxy S23+ | 4,700 mAh | 45W | ✓ | ~62 min | Feb 2023 |
| Galaxy S23 | 3,900 mAh | 25W | ✓ | ~63 min | Feb 2023 |
| Galaxy Z Fold 6 | 4,400 mAh | 25W | ✓ | ~70 min | Jul 2024 |
| Galaxy Z Flip 6 | 4,000 mAh | 25W | ✓ | ~67 min | Jul 2024 |
| Galaxy A55 | 5,000 mAh | 25W | ✓ | ~80 min | Mar 2024 |
How to Actually Get 45W Charging — Step by Step
Check Your Phone's Maximum Wattage
Look up your model in the table above. Only "Ultra" and "+" Galaxy S models support 45W. The base S-series, Fold, Flip and A-series max out at 25W.
Buy a Charger With PPS
Your charger must support USB PD 3.0 with Programmable Power Supply. Without PPS, the phone falls back to slow 15W charging — even if the charger says "45W" on the box.
Use the Right Cable
A 3A or 5A USB-C to USB-C cable is essential. Thin 1A/2A cables physically cannot carry 45W. Samsung's official 45W charger includes a 5A cable in the box.
Enable Super Fast Charging
Go to Settings → Battery → Charging Settings → ensure "Super Fast Charging" is toggled ON. It's on by default, but some users disable it for overnight charging.
Mind the Temperature
Samsung throttles charging above ~37°C. Remove your case in hot environments, avoid charging in direct sunlight, and don't game while fast-charging.
Best PPS Chargers for Samsung 45W
All chargers below are PPS-certified and tested with Galaxy S25 Ultra to confirm 45W negotiation.
Samsung 45W Super Fast Charger (EP-T4510)
~£35Includes 5A cable in box. Guaranteed compatibility.
Anker 735 (GaNPrime 65W)
~£403-port charger. Hits 45W on single-port mode.
UGREEN Nexode 65W (2C1A)
~£35GaN III. Shares power when using multiple ports.
Baseus 65W GaN5 Pro
~£30Compact travel charger. C1 port delivers 45W PPS.
Samsung 25W Super Fast Charger (EP-TA800)
~£18Perfect for standard S25, Flip, Fold, A-series.
Anker Nano II 45W (A2664)
~£30Single-port. Tiny GaN design, reliable PPS.
5 Common Myths About Samsung Fast Charging
"45W charging will destroy my battery"
Reality: Samsung's Adaptive Fast Charging protocol actively manages voltage and temperature. The phone drops from 45W to lower wattage as the battery fills — the charger never overrides the phone's internal BMS. Samsung officially supports 45W and provides a 2-year warranty.
"Any 45W USB-C charger will work"
Reality: Only chargers that support USB PD 3.0 with PPS (Programmable Power Supply) will trigger Samsung's Super Fast Charging 2.0. A 45W charger without PPS will charge at a slower 15W or even 10W. Always check for PPS certification.
"I need Samsung's official charger"
Reality: Any charger with USB PD 3.0 PPS at the correct wattage works. Anker, UGREEN, Baseus and other reputable brands all make PPS-certified chargers that trigger Samsung Super Fast Charging. You do not need Samsung-branded accessories.
"The base Galaxy S25 supports 45W"
Reality: Only the Galaxy S25+ and S25 Ultra support 45W. The standard S25 caps at 25W. The same applies to S24, S23 and older S-series. Check the table above to confirm your model's maximum.
"Any USB-C cable will do"
Reality: For 45W PPS, you need a cable rated for at least 3A (ideally 5A for optimal negotiation). The cable that came with your Samsung charger is rated correctly. Cheap cables may limit you to 15–25W. Look for USB-IF certified cables or e-marked cables.
Is 45W Worth It Over 25W?
| Metric | 25W PPS | 45W PPS |
|---|---|---|
| 0 → 50% (S25 Ultra) | ~30 min | ~22 min |
| 0 → 100% | ~68 min | ~56 min |
| Peak heat at phone | ~34°C | ~37°C |
| Charger cost (Samsung official) | ~£18 | ~£35 |
| Battery degradation impact | Minimal | Minimal (PPS-managed) |
Verdict: 45W is most noticeable from 0–50%. The last 20% charges at near-identical speed on both wattages because Samsung's BMS tapers current. If you regularly top up during the day, 25W is fine. If you need a fast full charge in the morning, 45W is worth the premium.
How to Verify Your Samsung Is Charging at 45W
One of the most common frustrations with Samsung fast charging is uncertainty — how do you actually know your phone is receiving 45 watts rather than falling back to 25W or even 15W? There are three reliable ways to check, ranging from a quick visual confirmation to a precise measurement.
Method 1 — Lock screen indicator. When 45W Super Fast Charging 2.0 is active, your lock screen displays the text "Super Fast Charging" (not just "Fast Charging"). The battery circle animation also speeds up noticeably. If you see "Fast Charging" instead, your phone has negotiated 15W or 25W — likely because the charger lacks PPS, the cable is inadequate, or the Super Fast Charging toggle in Settings > Battery > Charging Settings is disabled.
Method 2 — Battery settings page. Open Settings > Battery > More Battery Settings. While plugged in, you can see the estimated time to full charge. With a Galaxy S25 Ultra at 20% battery, a 45W charger should show approximately 45–50 minutes to full. If it shows 70+ minutes, you are likely receiving only 25W.
Method 3 — USB power meter. For absolute certainty, a USB-C inline power meter like the Charger Lab Power-Z KM003C displays real-time voltage, current, and wattage. Place it between the charger and cable. During the first 50% of charging a Galaxy S25 Ultra, you should see approximately 9–11V at 3–4.5A, peaking at around 44–45W. This drops progressively as the battery fills — this is normal and expected behaviour from Samsung's Battery Management System.
Frequently Asked Questions
Which Samsung Galaxy phones support 45W Super Fast Charging?
Do I need Samsung's official 45W charger or will any charger work?
Will 45W charging damage my Samsung battery?
What cable do I need for Samsung 45W charging?
How do I know if my Samsung is actually charging at 45W?
Is there a difference between 25W and 45W for everyday use?
The Bottom Line
Samsung's 45W Super Fast Charging 2.0 is genuinely useful if you own a compatible Galaxy Ultra or Plus model — but only if you have the right charger and cable. The technology is built on the USB PD PPS standard, which means you are not locked into Samsung's own accessories. Third-party chargers from Anker, UGREEN, and Baseus deliver identical 45W speeds at significantly lower prices.
The real-world difference between 25W and 45W is roughly 8 minutes to reach 50% on a Galaxy S25 Ultra. That may not sound dramatic, but for morning routines or airport top-ups it is the difference between leaving home with 30% battery and 50%. Over a year of daily charging, those minutes compound into hours of extra usable battery life.
Our top recommendation for most Samsung users is a 65W or higher GaN charger with PPS. These cost about the same as Samsung's own 45W charger but can also fast-charge your laptop, iPad, or Nintendo Switch. A single multi-purpose charger replaces two or three dedicated adapters — better for your wallet, your travel bag, and the environment.