Chargers & Power Adapters

Notebook chargers and power adapters

The notebook power adapter is one of the most-lost accessories in a working fleet, the second-most-replaced after batteries, and the part most likely to fail at the worst moment. A spare for the desk drawer and one for the travel bag is a common rule for anyone who relies on the notebook for daily work.

What this category covers

Vendor-original AC adapters identical to the one shipped with the notebook; third-party USB-C (Universal Serial Bus Type-C) Power Delivery (PD) adapters that work with most modern notebooks; travel chargers with multiple country plug types and several output ports; and high-wattage GaN adapters that pack more power into a smaller body.

How to choose a charger

Match the wattage to the notebook

The replacement adapter must deliver at least the wattage of the original. A 65 W notebook on a 30 W adapter charges slowly or refuses to charge under load; the wattage is printed on the original adapter and in the notebook's specification page. Choosing higher than the original is safe; the notebook only draws what it needs.

Match the connector

Older notebooks use a round barrel connector specific to that brand and model; current notebooks mostly use USB-C. For barrel-connector notebooks, the inside diameter, outside diameter and pin must match exactly, otherwise the connector will not seat or will damage the port.

Vendor original or third-party

Vendor-original adapters preserve full manufacturer warranty support and are the safer choice for warranty-sensitive fleets. Reputable third-party adapters from established power suppliers cost less and are safe; avoid unbranded or counterfeit adapters with unverifiable specs. For USB-C Power Delivery, name-brand third-party chargers are usually a clean substitute.

Travel chargers and GaN designs

Multi-port travel chargers can power a notebook, phone and tablet from one outlet. GaN (gallium nitride) designs are 30 to 50 percent smaller than older silicon adapters at the same wattage, useful for travel and tight desk setups. They cost a little more but earn it on long trips.

Key features to compare

USB-C Power Delivery profiles

USB-C PD chargers can output several voltages (5 V, 9 V, 15 V, 20 V, 28 V on newer chargers); the notebook negotiates the right one. Confirm the charger lists the voltage profile the notebook needs, not just the total wattage.

Cable

Some adapters include a captive cable; others use a detachable USB-C cable. For PD adapters, the cable must be rated for the wattage; many cables sold as USB-C only support 60 W. For 100 W or 140 W notebook charging, use a 100 W or 240 W rated cable.

Country plug

Travel chargers often include interchangeable plug heads (UK, EU/Schuko, US, AU, Swiss). For fleet stocks in one country, fixed plugs are simpler.

What to check before buying

• Original adapter wattage from the notebook spec sheet?
• Connector type (USB-C, round barrel with which dimensions, vendor-specific)?
• Single use or multi-port travel charger?
• Country plug needed?
• Vendor-original or approved third-party brand?

Frequently asked questions

Can I charge my notebook with a phone charger?

Only if the phone charger is USB-C Power Delivery and rated for enough wattage. A 20 W phone charger will not charge most notebooks under load, even if it physically connects. Match or exceed the original notebook adapter wattage.

Will a higher-wattage charger damage my notebook?

No. The notebook only draws as much power as it needs, regardless of the charger's maximum. A 100 W charger on a 65 W notebook is fine and charges at the notebook's normal rate.

Is GaN really worth the extra cost?

For desk use the size advantage is small. For travel, a GaN charger that fits in a shirt pocket and powers a notebook plus a phone replaces two larger adapters and a power strip. Frequent travellers usually prefer GaN; daily desk users do not need it.

Why does my notebook charge slowly with a third-party USB-C charger?

Two common causes: the charger's wattage is below the notebook's draw under load, or the cable is rated for less than the notebook needs. Verify the charger wattage and use a cable rated for 100 W or higher for full-speed notebook charging.

Can I use a third-party charger and keep my manufacturer warranty?

Most vendors do not void the notebook manufacturer warranty over a third-party charger, as long as the charger is properly rated and not damaged. If a third-party charger physically damages the notebook (rare but possible with counterfeit adapters), that specific damage is usually outside manufacturer warranty. For peace of mind, use vendor-original adapters during the manufacturer warranty period.