Power adapter

MattyB

Moderator
Mar 19, 2012
3,097
125
Adelaide, Australia
To me it sounds like the power adapter wattage isn't high enough or the adapter is failing. If the machine isn't being supplied enough power then it will start drawing it from the battery.
Your required wattage will depend on your machine config but most 17" machines use the 240W adapter (the newer 17" laptops have higher power requirements though). You can use the pre-boot diagnostic in the boot menu (F12 while booting) to see how many Watts your adapter is supplying the machine. There will be a sticker on the adapter that will tell you what Wattage it should be.
 
To me it sounds like the power adapter wattage isn't high enough or the adapter is failing. If the machine isn't being supplied enough power then it will start drawing it from the battery.
Your required wattage will depend on your machine config but most 17" machines use the 240W adapter (the newer 17" laptops have higher power requirements though). You can use the pre-boot diagnostic in the boot menu (F12 while booting) to see how many Watts your adapter is supplying the machine. There will be a sticker on the adapter that will tell you what Wattage it should be.
It is a 240 watt. It's the one that came with it. I now i leave it plug in all the time. So I don't know if they wear out.