Will a more powerful charger damage my phone?

No. Devices only ever draw the wattage they negotiate — a 100W charger on a 25W phone still delivers 25W.

Do I need the official brand charger to fast-charge?

Only if your phone uses a proprietary protocol (VOOC/SuperVOOC, Warp, Dart, HyperCharge, SuperCharge). Phones that rely on USB PD/PPS or Quick Charge will fast-charge from most decent third-party chargers.

How do I know if my cable is the problem?

Look for "100W" or "5A" printed on the cable or its packaging — that indicates an e-marked cable. If it just says "USB-C cable" with no rating, assume it caps out around 60W or less.

Will Your Charger Actually Fast-Charge Your Phone?

Chargers, cables and phones each speak their own fast-charging language. Pick your combination below and we'll tell you the real wattage you'll get — and exactly what's holding you back if it's not what you expected.

Your device

Your charger

I can't find my charger — let me enter its specs manually

Charger's rated wattage

Which fast-charge protocols does it list on the box?

Your cable (optional, but affects the result)

Cable's rated amperage

It's rated 3A+ and marketed as "100W" or "e-marked"

I don't know / skip the cable check

Why the same charger can feel "fast" on one phone and slow on another

Fast charging isn't one universal standard — it's several. USB Power Delivery (PD) and PD PPS are the open, brand-agnostic versions built into USB-C. Qualcomm Quick Charge is common on Android chipsets. And several phone makers (Oppo, OnePlus, Realme, Xiaomi, Huawei) layer their own proprietary protocol on top, which only reaches full speed with their own official charger and cable. Plug a proprietary-charging phone into a generic USB-C charger and it will still charge — just at a fraction of the advertised speed, because it fell back to plain PD.

The cable matters just as much. Anything above 60W requires a "5A e-marked" cable — a cable with a small chip that tells the charger it's safe to push that much current. A cheap unmarked cable will silently cap your charging speed even if both the phone and charger could go faster.

Frequently asked questions

Will a more powerful charger damage my phone?: No. Devices only ever draw the wattage they negotiate — a 100W charger on a 25W phone still delivers 25W.
Do I need the official brand charger to fast-charge?: Only if your phone uses a proprietary protocol (VOOC/SuperVOOC, Warp, Dart, HyperCharge, SuperCharge). Phones that rely on USB PD/PPS or Quick Charge will fast-charge from most decent third-party chargers.
How do I know if my cable is the problem?: Look for "100W" or "5A" printed on the cable or its packaging — that indicates an e-marked cable. If it just says "USB-C cable" with no rating, assume it caps out around 60W or less.