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I'm trying to buy an 8 cell batter for my lap top. I dont know much about 8 cell battery's.?

I just saw this auction on EBAY, it says new 8 cell battery for Gateway mx7118, which is my lap top. the price is 80 bucks. below is the battery info, I was wondering if you guys could tell me does that much 8 cell battery power, performance, etc.... thanks.

Battery Type: Li-ion
Voltage: 14.80V
Capacity: 4400mAh
Color: Black
Dimension: 152.68 x 81.50 x 26.50 mm
Product Type: Replacement Battery (Brand New)
Condition: New, 1 year warranty!
Weight: 408.50g
Warranty: New, One Year Warranty
PSE CODE: NGW002

A 4400 mAh battery isn't very much- most are 5600mAh. To be honest, you are likely going to get about as much battery life in this 8-cell as you are a typical 6 cell (which is likely what is in your laptop now). For $80, it's not that great a bargain- unless your current battery is in terrible shape and could use replacing.

Plus, you're buying from ebay. They don't have to guarantee anything, and it could be a huge pain to get that "One Year Warranty" they are claiming. Plus, it may not even be new. When a typical battery like this would run about $125-$175, this one being $80 would cause me to be skeptical.