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Laptop power supplies, does current matter?

My laptop Charger is 19.0v and 6.5A, it was broke yesterday. I tried to find a replacement, but couldn't so I got another one with 19v and 4.7A, I was wondering if its okay to use it and if its going to break anything?

My laptop is a DV6 I7 15.6".

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4.7 is quite a bit lower than 6.5. As such it probably won't be able to charge the laptop's battery when the laptop is under moderate load, and heavy load will cause it to drain the battery. It should still charge when idle or off though.