Replacement charger for my HP Envy DV7-7378SF 17,3.

[dumpling2]

I am looking to replace my HP Envy DV7-7378SF 17,3 charger, the previously bought one was not able to charger fully. I am going round in circles with wattage and whether I could go for a higher wattage to charger; quicker and lore effectively.

Any advice greatly appreciated. 

[Kuroi_Kenshi]

Hi @dumpling2,

Welcome to the HP Support Community! 

Thanks for reaching out about your concern!  

We're thrilled to have the opportunity to assist you and provide a solution.

For your HP Envy DV7-7378SF (17.3"), you should look for a compatible replacement charger with the correct wattage and connector type. Here's what you need to know:

Recommended Charger Specifications

• Original Adapter Wattage: 120W (recommended)
• Voltage: 19.5V
• Current: 6.15A
• Connector Size: 4.5mm (outer) x 3.0mm (inner) with pin in center

Can You Use a Higher Wattage Charger?

Yes, you can use a higher wattage adapter (e.g., 135W or 150W) as long as the voltage (19.5V) and connector size match. The laptop will only draw the power it needs, so using a higher wattage charger won't damage your laptop, it may just run cooler or more efficiently.

Best Replacement Options

Official HP 120W Adapter (19.5V, 6.15A)

• Model: HP Part Number 609946-001 or 677774-002
• Works exactly like the original.

HP 135W Adapter (19.5V, 6.9A)

• Slightly higher wattage, but safe to use.
• May help if you run demanding applications.

Things to Avoid

Lower Wattage Chargers (e.g., 90W) – Won't charge properly, may cause overheating.
Universal Chargers with Interchangeable Tips – May not fit securely or provide stable power.

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Best regards,