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power rating

About this tag
The power rating tag on WindowsForum covers discussions about laptop charger specifications, including voltage, amperage, and wattage. In a thread about an HP EliteBook 8740w, a user compares an original Dell charger (19.5V/4.62A, ~90W) with a universal Hama charger (19V/4.7A, 120W max). The laptop detects the non-original charger and displays a 'power adapter not recognized' message. This highlights how mismatched power ratings can trigger compatibility warnings, even when wattage is higher. The tag is relevant for troubleshooting charger issues, understanding power requirements, and selecting compatible replacements for Windows laptops.
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    Windows 8 Changement batterie pour HP EliteBook 8740w

    Hello, I have a laptop HP EliteBook 8740wWhose original charger no longer works, but the battery is good (thankfully) , it almost a year. I found a universal charger planet saturn " hama " model achg -07: 100v- 240v , 1.6A max, output: 19V / 4.7A , 120W max !the original charger is Dell PA-10...
    • cherrymood
    • Thread
    • ac power amperage battery charger charging compatibility dell electronics hp elitebook laptop message power adapter power rating power supply settings solutions tech support universal charger voltage
    • Replies: 1
    • Forum: Windows Hardware
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