Add a chosen planning margin to your laptop’s stated power requirement before you compare charger options.
A transparent estimate based on the values you enter. No account is needed.
Use the tool
Add a chosen planning margin to your laptop’s stated power requirement before you compare charger options.
How the estimate works
Planning watts = rated watts × (1 + headroom percentage ÷ 100). Wattage alone does not confirm charger compatibility.
Check a product or part
Enter a product, exact model or part number. Retailer searches are optional and open only when you select a link. Check manufacturer references, fit, condition, delivery and seller terms before buying.
Search links open the chosen marketplace. eBay examples are Australian snapshots; check listing details on the retailer site. eBay Partner Network links may earn Vyonetix a commission.
Explore eBay AU listing examples
Australian listing examples are shown only when Australia is selected. Use the retailer searches for your chosen market.
These are dated API search matches, not a verified fit or recommendation. Checked: 30 Oct 2026 06:56 UTC. Listings may change or disappear.
100W GaN Charger USB-C Laptop Power Supply Adapter For MacBook iPhone 16/15 65W
eBay AU search match checked 30 Oct 2026 06:56 UTC. Compare full model, condition, seller, shipping and return details.
eBay Partner Network links may earn Vyonetix a commission. Verify exact product details with the seller and manufacturer.
About this tool
Add a planning margin to a power requirement you read from your laptop documentation or existing adapter. The result is a planning value, not a compatibility check. USB-C Power Delivery profiles, cable ratings, barrel connectors, voltage and manufacturer restrictions all matter; wattage alone is not enough. Confirm the exact laptop model, voltage, connector and supported charging protocol before buying. The marketplace links are searches for candidate products and do not certify fit or safety.
Frequently asked questions
Are these results guaranteed to fit?
No. Search matching and user-entered calculations do not establish compatibility. Verify part codes, dimensions and manufacturer guidance.
Are prices or stock shown?
No. Retailer pages show their current terms after you open them. This tool does not scrape or promise live prices or availability.