Start with the exact device model: match its charging connector, supported charging method and recommended power before choosing an adapter or cable. A manufacturer-specified replacement is a sensible route when the connection or charging requirements are unclear; a compatible USB-C Power Delivery setup may also work, but a multi-port charger needs enough power at the relevant ports when devices charge together. If a battery or charger is damaged, swollen or unusually hot, stop using it rather than treating the issue as a routine accessory replacement.
If one charger or cable is lost or damaged, the replacement needs to match the device’s connection and charging requirements. For a laptop, a lead that fits is not enough to establish that the adapter provides suitable power.
When phones, tablets and laptops charge in one place, the useful questions are how many ports are needed and what each port can supply while the others are occupied.
A marketplace listing needs more scrutiny than a familiar-looking connector or brand name. The Office for Product Safety and Standards has reported serious hazards in counterfeit charger listings, making a traceable seller and an identifiable product important checks.
Check the device’s requirements before comparing chargers. Then consider the seller and product identity, how many devices must charge together, and whether the need is for home use or temporary portable power.
| Concern | What to check | Who this matters to |
|---|---|---|
| Device compatibility and power | Check the exact model’s connector, supported charging method and recommended adapter wattage. Confirm the cable’s power rating where relevant. | If my laptop charger is missing, I need a replacement that suits the model, not merely one with a matching plug. Around 33% of consumers put exact compatibility and adequate power first. |
| Product and seller identity | Identify the product and seller, review its instructions and warnings, and check relevant GOV.UK safety reports or recalls. | When buying a mains charger online, I want to know who supplies it and which product I will receive. Roughly 25% of consumers make product and seller traceability their primary concern. |
| Simultaneous charging | Count the ports needed and compare each device’s requirements with the charger’s per-port and shared-power allocation. | If several devices use the same charging area, I need them to charge together without overlooking the laptop’s power requirement. Around 25% of consumers prioritise enough ports and shared power. |
| Temporary portable power | Check a power bank’s output, the required cable and the device manufacturer’s charging guidance. | When I am away from a mains socket, I need a compatible temporary source rather than another fixed home adapter. For about 17% of consumers, portable backup is the main need. |
USB-C describes the connector. Charging also depends on the device, adapter and cable; Apple, for example, says a USB-C-chargeable Mac needs a USB Power Delivery adapter or display and recommends at least the wattage specified for that Mac model.
Look up the exact laptop model and check its recommended power, charging method and cable requirements before replacing the adapter.
The Office for Product Safety and Standards reported serious fire risks in a counterfeit USB-C laptop charger in 2025. It separately reported fire and electric-shock risks in a counterfeit Apple-branded adapter that year. A broad compatibility claim or familiar logo does not establish product identity.
Check the seller and exact model against manufacturer information, and look for relevant GOV.UK safety reports before buying.
A multi-port charger’s total maximum can differ from its single-port maximum, and the power available to a device can change when other ports are in use. Belkin lists 200W total maximum output but 140W maximum on one port for its named four-port charger.
Compare the exact model’s power-allocation table with the devices you intend to connect at the same time.
A damaged battery or charger is not an ordinary compatibility problem. London Fire Brigade warns that damaged batteries can present a fire risk.
Stop using damaged, swollen, scorched or abnormally overheating equipment. Seek guidance from the device manufacturer or a qualified service provider if the device itself appears faulty.
A manufacturer-specified route for iPhone, iPad and Mac charging accessories.
A manufacturer-specified route for Galaxy users checking a named adapter and cable.
A third-party range to examine when several household devices need charging ports.
A third-party option for comparing documented multi-port output with a particular device combination.
A third-party route for households considering both USB-C and USB-A connections.
No: a matching USB-C connector does not establish that the charger and cable meet the laptop’s requirements. For a USB-C-chargeable Mac, Apple specifies USB Power Delivery and recommends at least the wattage stated for the Mac model; check the relevant manufacturer guidance for another laptop.
No. Electrical Safety First explains that USB fast charging can negotiate higher voltage between compatible equipment, but a headline wattage does not confirm support for a device’s charging method or cable requirements. Check the exact device model’s guidance.
Identify the seller and exact charger model, read the product instructions and warnings, and check relevant GOV.UK product-safety reports or recalls. Do not rely on a familiar logo or a mark pictured in the listing alone: the Office for Product Safety and Standards has reported serious hazards in counterfeit chargers.
No. Stop using damaged, scorched, swollen or abnormally overheating equipment; London Fire Brigade warns that damaged batteries can present a fire risk. If the device itself appears faulty, seek manufacturer or qualified-service guidance rather than continuing to try replacement accessories.
A multi-port adapter can share power between connected devices, so its total output is not necessarily available at the laptop’s port. Check the exact model’s allocation table for the ports you plan to use together; Belkin, for example, specifies different total and single-port maxima for its named four-port charger.