The truth about laptop chargers: the “cheap” option can be costly
Chargers rarely feel important, until they start smoking. This week I helped two new clients who saw smoke coming from their laptops. They shut them down quickly, and the cause was simple to spot: incorrect, bargain chargers bought online.
You get straight advice and safe solutions from me. I only supply fully compatible power adapters, tested and suitable for your device. No guesswork, no knock‑offs.
Why this happens
Most people assume chargers are universal. They are not. The plug might fit, but the electrical details matter. If voltage and amperage are wrong, you risk damage to the charging circuit and the motherboard, and you increase the chance of overheating.
It sounds dramatic, but it is exactly what I saw in both cases this week. Each laptop was fed the wrong voltage. That small mismatch was enough to burn out components and stop the machines from working.
What went wrong in the two cases
- The laptops required 18 V and 19 V
- The chargers supplied 20 V
- Result: damaged circuitry and complete motherboard failure
It is not only voltage. If a charger provides too little current, it can run hot over time and stress components. That leads to unstable charging, throttling and premature failure.
How to avoid the problem
Just because the plug fits, it does not mean the charger is correct. If you are unsure, ask me before you buy.
Your quick checklist
- Match the voltage exactly to the laptop’s specification
- Use an equal or higher amperage than the device requires
- Ensure wattage meets or exceeds the original adapter
- Confirm the connector type and polarity are correct
- Choose reputable brands or ask me to source the right model
If you ever see sparks, smell burning or notice unusual heat, power off, unplug and do not use the charger again. Safety first.
Need the correct charger?
I will identify the exact adapter your laptop needs and supply a safe, reliable unit. Friendly advice, fast turnaround and no fuss.
Contact Cranfield IT Solutions
- Message or call to check your model
- Get a clear recommendation and price
- Pick up locally or arrange delivery
🔌 Got questions about a charger or a power issue? Get in touch today.