What the 20W-45W band is for
This is the everyday band. A 20W GaN charger covers a phone at its maximum wired speed, and a 45W GaN charger also covers tablets, earbuds, smart watches, power banks and small accessories — often two of them at once. If your product is sold with a phone, bundled in a gift box or carried in a bag, this is almost always the wattage you want.
Why GaN makes a difference at low wattage
Below 45W the silicon-versus-GaN gap is less about raw power and more about volume. A GaN phone charger can be built into a body close to the size of the plug head itself, which matters for travel kits and for retail packaging where every millimetre of carton space counts. Lower switching losses also mean a cooler case, and a cooler case means less thermal throttling during a long charge.
Ports and protocols
Single-port models keep the cost down; 1A1C and 2A2C versions let two or three devices share the wall socket. Look for USB-C PD 3.0, PPS for Samsung fast charging, and legacy QC or Apple 2.4A support if the same SKU has to serve older devices. Phones negotiate downwards automatically, so a 45W charger is safe for a device that only asks for 18W.
Where these chargers usually end up
Phone-brand bundles, operator retail shelves, hotel and airline comfort kits, corporate gifts and e-commerce listings. Each channel asks for something different: retail wants carton artwork and a barcode, hospitality wants a robust body and multi-region plugs, and marketplaces want packaging that survives shipping without extra protection.
Ordering and customisation
Branding — logo, colour, finish, cable, pouch and retail carton — starts from a 200 pcs trial order per model. Samples are produced before the bulk run, and the power stage, plug mechanism and safety clearances stay on the tested platform so certification still applies to your branded version.
What to check before you commit to a run
Test the way your customer will. Charge a phone from empty and time it; then charge from 80 per cent and feel the case after twenty minutes. Try the charger on a 110V socket if the product is going to the United States, and check that the plug head clicks in and stays in. Ask for the test report for the batch, not just the model, and confirm that the packaging survives a drop without extra protection — for marketplace sellers that single point decides how many units come back.
Frequently asked questions
- Is 20W enough for a modern phone? Yes for most phones — it matches the fastest wired speed many of them accept.
- Can a 45W charger charge a laptop? Very small laptops and tablets, yes; full-size laptops belong in the 65W-100W band.
- What is the usual MOQ? 200 pcs per model for custom branding; ready-stock models can ship in smaller quantities.